life in new york it's ask an engineer buddy and welcome to ask an engineer it's me and the engineer with me mister lady on camera control broadcasting live from downtown manhattan that's where we have the eight of fruit factory which we saw some essentials from we do our uh... kidding soldering coding manufacturing shipping storing in all that only a few blocks uh... downtown and uh... and i don't like show next fifty minutes or so we'll be checkin about the world of making electronics and more let go of with the discount code and more tell them what's on tight show on tonight to the code is channel ten percent off the native restore all the way up to eleven fifty nine p.m. use it or lose it it's for anything that's in stock it does not cover anything like a raspberry pile talk about that in a minute we do a bunch of live shows uh... talk about some of our live shows including show and tell that we just did moments ago we also do desk of lady eight including great search there's jpeas product pick of the week will have a highlight from that in addition to some cool previews of what's going to be on jpeas show tomorrow time travel will ground world makers hackers are engineers including some upcoming holidays that's going on some footage that air shot from maker fair bay area this is restarted and a whole lot more to do some factory footage make here in new york city we're gonna do some three printing we're going to do some i-n-m-p-i brought to you by did you key and a fruit thank you did you key this week it's pick switching the smart way new products questions and then this week we're going to do something a little bit different we're gonna have a interview uh... we've used it to have interviews when there was like more in-person stuff going on but we're starting it up again we have an interview with lady ita and illa use from nxp talking about this new beefy chip that we had a board for uh... so he interviewed illa we're gonna do it the end interviews about seventeen minutes long so you want to get to the whole show and play that but we'll be doing that you can post up your questions on discord you can try to just discord where we'll get to all of them towards the end of the show and then play the interview all that and more on you guessed it ask an engineer okay okay well uh... it's a pack show yeah i'm going to uh... ask you lady ita so people can do it just kind of course but uh... there's also free stuff they're gonna talk about something important in a moment don't go anywhere i free stuff you order from age group dot com we'll give you free things when you put enough money in your cart and check out ninety nine dollars or more you get this beautiful uh... gold and eight of fruit black uh... pcb coaster with nice extra thick pcb and for bumpers it's beautiful i use mine every day at uh... very easy to clean too uh... that's you get that ninety nine dollars or more and then if you order one forty nine or more we'll give you a kb twenty forty pro-micro pinout microcontroller board that uh... has a rp twenty forty chip on it with a mix of flash usb-c if use a neopixel sticky teaport button or two uh... it's just a great little microcontroller to get going with rp twenty forty circuit python or arduino we have free u p s a ground shipping when you order nine one ninety nine ten dollars or more uh... it's trackable it's insured it's brown it's united it's u p s and two ninety nine or more we still have some circuit program expresses you know ever back when we didn't have these because there's a chip shortage but now it's kind of over and we have these again so we're gonna give them away when you order two ninety nine or more it's our favorite ball in one round microcontroller board le these and buttons and sensors and more great way to learn programming so uh... uh... last week we did something kind of special we put raspberry pi five four gigabytes in the store and we let everyone know who's watching live we said hey we're about to do this log into your account make sure you have two factor authentication so we have that on our uh... life show we mentioned it and we said you know that's important because that's how we do raspberry pi so if you have two factor authentication cuts down on the bots and just kind of some of the crummy things that we're going on and once you have that uh... will pies and and then you'll be able to purchase them so for the live viewers right now we could use that again so good news uh... the initial and so i mentioned this but i'll mention this now uh... it's a good idea to log into your food account right now make sure you have two factor authentication you probably already do and we're about to put in raspberry pi five eight gigabytes there's limit one per customer there's no discounts uh... one of the things that's going on right now is there was pre-orders for some of these but there wasn't enough for the pre-orders they're already on back order don't get these so we said well what can we do uh... and i think someone last week kind of summarize that they're like oh you kind of did like a fan sale for for folks uh... to get tickets to like a concert there was it was special for for people who are watching the live shows hey hey this is how you do it and they were able to uh... get get a raspberry pi because they watch live so uh... you know if you don't have a raspberry pi and you're thinking of course just don't buy one because you know it's they're hard to get there's other people who need them but uh... this is the first round of raspberry pi five eight gigabytes that went out and uh... we'll um... we'll keep trying to figure out creative ways because there's only a few and uh... go ahead and log in right now it's not all about to be not all about to be sometimes that's a good yeah but uh... log into your account now make sure you you know you're you're logged in with two-factor authentication and ladiata uh... you want to go okay i'm gonna go disappear yeah you're gonna go put those in i'm going to disappear us so while you're doing this beep beep beep ladiate is going to i'm gonna i'm gonna do i'm gonna yeah i'm going to do the play by play as i get our website set up here so you can start to see uh... check it uh... well i'm gonna i'm gonna i have to uh... get the browser fired up yeah and get everything set up on my side where folks see the raspberry pi i'm going to hit refresh yeah uh... it's in stock there is there's there's well over a hundred because it just says in stock and i'm going to put this browser back on i'm going to okay there and as you can see hey we're back back as you can see i went into my secret undisclosed location you can see it's in stock behind what you have to yeah there you go since i'll disappear a second yeah it's in stock and you can let's see they're still in stock they didn't evaporate instantly so this is what we're doing um we'll um we'll keep trying to think of fun creative ways to uh handle the demand and also do something special for the the folks who watch live okay so we'll see if it are probably better between the notes oh yeah usually does um there's there's um then it then it's where they're formerly known as x yeah they just they they're sorry x formerly known as twitter um keeps an eye on all the raspberry pi stock locations and uh will exit out tweeted out yeah so uh that's probably happening now okay so this is on and let's resume our normal programming we'll keep an eye on how many we have um some customers uh are alerted because that's how we do it they have a sign up and we'll see how it goes okay all right let's continue on our show we do a bunch of live shows we just did show until um for show until this week we had a few things going on uh jave from did you can stop by just got back from maker fair also a good but um yeah uh roam and also is heading off to super con that's the hackaday conference and event um showed off the robot some of the things that jay's working on uh scott had this cool like memory to frag the thing that he's doing kind of live it was like a live deep dive show until that was kind of cool um it has tuples and more if you like well the innards of memory management and more inside of circuit pythons ready some fun experiments because i was like oh you know we we tried to you know he set up a thing that didn't really broke it and then we're like well how could you fix it yeah okay so we also have um scott sorry scott was on uh liz was on with um mars clock really neat clock that has some sort of trigonometry and more jp had this really neat um pokemon pokeball thing did this little uh little twirly thing you got to see it it's a pico project with a rather the raspberry pi pico and has some clever uh jumper wiring to make a switch uh do this little twirly action with a character on the screen and you can do more with it egg hunting yeah dave stopped by uh had some teddy rucks pin hacking modding and more really cool kind of carrying on the project we did some mods and hacks for this uh teddy rucks pin voice thing and then also some eyeballs uh dj devin stopped by with a really cool halloween mask uh i was really uh interested in the hair and then uh delchy came by with a truck simulator a like uh radio thing that was really neat um i thought that was really cool um all good projects uh really fun delchy's posting up that project and more soon so you can make it but do check it out there's like an entire community of people who kind of remake the simulations of the simulation software and then you can have some fun hardware stuff so do check that out um show tells every wednesday some 30 p.m eastern time next week is live come on by and show and show your projects um we do desks of lady aida every single sunday hacker o'clock it's a little random it's kind of whatever is going on lady aida's desk what did you show off this a week i got some screen samples i showed off that and some eyeball code i'm working on and i one of things that kind of got me you know kind of intersected my week was esp expressive released a new board support package uh they're now up to 3.00 alpha 2 or rc1 i don't remember exactly what um and our continuous integration which i talked about a little bit automatically uses the latest development release so you know most people aren't going to have version 3 unless they're purposefully trying to install um the latest version three breaks a lot of stuff including neopixel so you know that was the most important thing for you to fix immediately so i fixed it um just on the fly but um you know there's going to be a lot of issues as esp3 comes out and has changed a lot of a lot of apis for hardware um you're just like the you know bookworm raspberry pi 5 stuff came out and and has changed a lot of apis for hardware on the pi esp32 is going through changes as well so just chat about that give some people a heads up i'm seeing a couple uh you know customers have already um uh you know let me know like oh yeah this didn't work and that didn't work so we're going to go through and try to fix everything yep and we also do from disk of lady aida we're in the world is that part that you need this is the great search by digikey and aida fruit lady aida uses her powers of engineering to help you find the stuff on digikey.com what did you try to find this week this week um i saw on social media somebody posted a cool um a dome metal dome keek switch kit and i was like oh that's kind of neat and i found that you can actually get that kit through digikey for free um you just have to sign up uh you have to give up your email address and your address of course and they'll send you one um but also just talking about uh metal clicky domes which is in general there's ones apparently that have two levels of clickiness like you can have like soft and hard click um and there's also ones that allow an led to shine through the back so you know it wasn't looking for a specific thing but more searching around um a topic um available on digikey so uh check it out if you're actually never using these very low cost low profile uh pick and placeable metal dome switches okay and i'm going to go over to the raspberry pi page right now before you go into the other thing oh 90 90 in stock so that went really fast i believe much faster than the yeah i think people kind of were maybe expecting yes though you can see here there is 90 90 and yes if you want one this is and this will be it um probably for a while um one of the things that i saw on the internets was there was you know small amounts to went to some of the resellers and they were already pre-ordered so folks are like i'm a little disappointed you know mine is not shipping yet so there's no way to satisfy the demand for all of that same time so we thought well what can we do that's special unique interesting for our community that watches live because it's probably that's the most we could probably do anyways for a while yeah i mean we have so many sign-ups and so few boards that it like yes so we got to figure out something yeah you're not gonna be happy and you know we were debating like well should we do pre-orders but then folks just get different accounts and they pre-order and then they get them and they resell them so it's like well let's just have this serendipity of time and and folks that watch shows so it is a way to do it um the folks really like the last week so we talked to our team and they're like yeah that was easy and fun so let's keep doing it so uh we're up to 90 okay let's continue on um JP's product pick of the week is every single week JP highlights something from the Adafruit product page it's discount automatically of pride here is this week's highlight it is the 2.8 inch tft touch shield version two with resistive touch as i touch the screen we're registering x and y coordinates and that final number there is the pressure this is being used as a sort of slideshow display the touch screen is just being used as sort of two directions so if i touch over here on the right we're going to go to the next image if i touch on the left side of the screen we'll go back so this is a really simple primitive use of the touchscreen you can use something like a user interface that has some big buttons on it maybe four buttons five buttons on it that are big touch areas and that'll work great that right there is my product pick of the week this week it is the 2.8 inch tft touch shield version two with resistive touch screen for Arduino and metro shaped boards okay and then on Thursdays there is JP's workshop and here's a little bit of a preview this is a power washer simply point and shoot with the custom power wash simulator controller in order to play the game and you can do things like flick the gun to change nozzles out press the c button on the wee chuck in order to change the nozzle angle and use the thumb stick to move around inside of the game now if you get off your mark you'll see that we need to recalibrate or readjust the offsets for the user in this case we're pointed way off the screen so what we'll do is point right at the center of the screen again hold the wee chuck up and press C and now we have adjusted the target angle you can also do things like roll the wee chuck to the right in order to change stance from standing to crouching to prone or roll the wee chuck to the left in order to jump and there are also a couple of other special modes if you pitch the wee chuck down you'll turn on the dirt map and you can also press C in order to change the camera control okay so all that on more gps show tomorrow uh deep dive is with tim for the next couple weeks fridays at 2 p.m. so like 5 p.m. eastern let's uh do a little bit time travel okay time traveling this week let's uh first look at our raspberry pi page there is 63 left in stock so uh it's like qvc you know what this is like qvc from a tribe you know cute people still know what qvc is i guess different generations zone is it's like this this is zirconium it was great it was in qvc well you know what it was like so shiny it fulfilled you know this is ate a fruit that we do like a live show with products that people even the only kid who like i mean it's just like and one time we had collins when we were doing um we had a pay phone right behind us um that's kind of fun anyways um at the hand they're like they're like oh look at the jewelry yeah shipper yeah so things that are going on right now um i wanted to call attention to it's native american heritage month we have a series of blog posts and more um when we go to our website you can check that out um whatever's going on this is american indian and alaska native heritage month 2023 see the post and more you can also check out resources uh that we've collected our team will be sharing blog posts and it's just like every every month has something to celebrate some of the celebrate so do check that out and speak it up we have some shipping news um so tuesday of next week is november 7th and everyone at ate a fruit is voting yeah we all the shipping information you can you could check out this is just uh because it's a day off and you're probably saying wait a second how is it a day off so companies should and usually are required to give their um employees time off to go vote uh but it's usually not enough time and there's just a lot of complications with it and voting isn't on a weekend or um sometimes the polls aren't open and it's not convenient so one of the things that um people said was as some countries have a day off for voting or it's a time when everyone can go do it doesn't seem like that's going to happen in us anytime soon so years ago we decided to make a voting day a paid day off at ate a fruit our team can use it to float holiday they can use it um we uh thought it would be good just to set a good example like maybe it can be contagious where other companies will do a paid day off for voting doesn't matter who to vote for it's good to participate obviously next year is going to even be um more more emphasis on on getting out the vote um but we've been doing this every year and and other maker companies electronics companies been doing it and so that was one of our goals so if you're looking to purchase something just know that there's times when there's a holiday we put a banner on our website it might not ship out the same day might ship out next business day veterans day is also that same week on that friday we'll get the word out about that next week but also know that's a paid day off for our team as well so you might not see a package so next week's a big week for um uh maybe not getting your package shipped same time there's two days there's tuesday and friday so just heads up um and then next up in our time travel adventures erin was at maker fair bay area and did a bunch of cool interviews and all sorts of neat stuff here is a little bit of a highlight uh take it away hi i'm erin three point and i am here at bay area maker fair 2023 ready to take a look around and see what people are making this year okay and then uh big reminder we have um i think one of the best internet of things newsletters um it's really hard to get a newsletter now because once you sign up for one you get spam they sell your information all of it's filled with ads so we have an ad free spam free internet of things newsletter i think it's one of the best ones out there you can get it through ad for daily a little bit of a reminder we we're trying to get more subscribers not because we need to um but we think it's a good resource for folks to try it out you can subscribe anytime you can look at it on our website if you want to look at the latest one um you can check it out this is uh we also posted online if you don't want to do it but if you want to get it delivered to your inbox spam free it's all the iot projects you can actually build use there's things from adafruit there's things from um other iot entities i think much like ai um it's you know iot is is buzzwordy and it's hard to find the good stuff um and it's hard to find exactly what you can build especially if you're someone who likes to build things it's not just like here's something you can buy that like hooks up into the cloud um so check it out and um brant is one of the authors it's fantastic um if you're not aware of it just go to adafruit daily and get a sign up for adafruit's internet of things monthly okay let's do some python on harmonica yes blinka blinka blinka blinka blinka blinka okay um big ish news um we are approaching circuit python 9 and circuit python 9 that means a bunch of new features and more um what things can people look forward to and circuit python 9 okay what there's actually a lot of stuff that's in python 9 so it's been cooking it's been simmering on the stove for a while big updates are we've merged um micro python 119 120 and 121 n so a lot of core library changes including the mpy format has changed i think even twice so um you know we're going to um you'll see some language improvements which is great uh and scott's also working on some you know memory improvements in nine but uh you definitely will have to you know if you're upgrading to nine you're going to have to update all your library files as well i think we just updated the bundle to create mpy's for nine um you know you can see the list here some other stuff we've got more usb host support um some tweaks to uh icecord c peripheral now icecord c target um you know one thing i chat about scott is that we removed stuff like display io show which i think was going to break a bunch of codes we now that was a question in the chat why was it removed i actually asked scott there's reasons i don't i don't know the api reasons for it but there is must be there must be good reasons because scott doesn't make breaks unless uh it really improves something um but now gives you a warning so you know it it doesn't um fully remove it but it will tell you that it's about to be removed which is kind of nice because otherwise you'll you'll or sorry if you if it's removed it'll tell you how to change your code to fix it it's a it's a very simple fix um and uh i'm trying to think what else um idea five for esp support has been updated and i think that's actually improved a lot of um wifi and display stability for the expressive line as well okay and then um the other thing that we were going to talk about this week is circuit python blink of python compatibility layer now supports reds by five yes melissa who uh is it manages the blink of circuit python layer which lets you people use circuit python libraries and the api on raspberry pi computers um a perfect example of why it was such a good idea that we had this compatibility layer because uh stuff changed in brook when the raspberry pi five came out our pi gpio had no no longer works on the raspberry pi and that was what we were using as the underlying layer melissa has updated to use now live gpiod much like other single board computers it's nice and fast you had a playground note about how it's like you know nice and speedy uh for bit banging which is great um it now goes to the rp1 chip and um so far so good you know if folks have issues um you know with installing blinka or using our circuit python libraries let us know seems like i squared c in gpio and spi support has has it's pretty much all working um and then hopefully as we learn more about the rp1 chip um i believe there's pwm support there's native pio slash neopixel there's maybe analog input support um we will add that to blinka as well right so that'll be really nice all the apis that we already had that people are using for my controllers will be able to add even more of them to the raspberry pi and um case you're wondering what we're all about if you go to circuit python.org um circuit python is kind of our sponsored project we have our team that does it um we're funding it to have like the best experience we also help fund micro python um circuit python is like the educational fork that works with lots of boards we now have 448 boards so right now the the most of the boards are non-adafruit yeah if you do flip filters yeah and you click on adafruit which is like right over there click on that make it then you can press the x so we have almost 95 yeah so we have 100 and there's 448 so we're less than a quarter yeah and 20 20 and so that's important to us because we we want to be clear about what we're doing you know the top boards here they're not from adafruit yeah we do open source hardware and we publish all the designs and schematics and code and we want you to use it and do cool stuff just don't you know say rate for it that's it come up with a different name and then for micro python circuit python now specifically our circuit python work um we want to make it easy for anyone to take a board and have circuit python on it and we don't care if it's our hardware or not so we we want to see more boards out there we can say things like that we could use that as a like marketing thing like open and it's great it's free but we also want to demonstrate it and so what we do is we have this list of boards that circuit python runs on and if you just look at which boards from which companies adafruit is not the most and it's important to us it means other people are using it so um that was that was the goal and it looks like it's still happening and so if you're doing hardware and you don't want to maintain firmware for your device forever and you just want to just just work um you can take a look at some of these boards and be like oh that's a cool board i can just have circuit python on or i can make my own board spend on my own board and i always get all those updates no i don't know so i was saying actually there's two boards that she's trying to find images for and so it actually is 450 but like we don't have yeah we'll get there so we'll update it's not all right for your products you know you can always buy some to support us but again like we this is one of the things we wanted to do for the world just like here's a very cool easy way to do python on hardware um built on micro python has all the cool things you can do with lots and lots of different hardware one of the reasons that we make circuit python is so it runs on a variety of chips and here it is so that's our python on hardware news this week you can get this update for daily delivered here in box version week spam free tracking free you don't even need to sign up you can just go to for daily and look at the link that's right it's also on github it's also a permanent webpage we really want to make it easy to do stuff access yes access me yeah so we we do that and uh google leader it yeah one of the things for folks who pay really close attention to stuff is we've been um de-googlifying a lot of our properties you know google analytics uh when you have a website you pretty much everyone just put google analytics on their website yeah yeah and over the years of we as we've developed our properties we're like how do we get out of this because we don't we don't make money on views we don't make money on ads we don't make money on mining your personal information or selling in or doing anything with it so why don't we just remove it so we've been going through the process of making sure like there's things if we want to make sure we know like what guide is most popular there's things that analytics are good for but we also don't want to have all that information because we don't use it why why have all this information about what browser you have what country you're coming from who cares we don't care we don't use it so um that's also important to us for you for daily um you don't need to sign up as a newsletter we use mailchimp and they have their own you know tracking with URLs because people care about what's tracked we don't so you can also just get it as a standalone webpage as well we're kind of committed to this and that's why i kind of mentioned it every week because um i i know i know folks would you just assume at least we're like this we'll see you we're that's search engine unoptimized well i you know and that's good because it's hard to even use web search now i know google search doesn't work but um i i know the the tendency is to just assume the worst and think that whatever you sign up for is you're just gonna like put banners everywhere you're gonna get spam forever but we work really hard at this tonight but i also know like because sometimes it's frustrating is people just like well i i know you're just gonna sell my information like we don't do that but i get it i get it it's like if you live in this world why it's not a bad bet sometimes to assume that so anyways um we do open source hardware speak enough and the open source hardware that we do uh public files we have a learn guide and this week on the big board lady data is i'll be honest we actually don't have i don't think we have any new guides this week i'm gonna go right to playground then yeah you can go to playground because this way this was a this is a week of weeks tour safe oh yeah let's do detours oh there are stock i'll set a stock okay thank you folks thank everybody sale is over um yeah well i'll get to the guides some some weeks you know lots of guides i give up for this week i'll admit i did not review the guides that's my playground um yeah there's a lot so this is where the end if you go to playground you can click it on our website we also made a separate domain for dash playground.com um because we wanted to have it on a separate website look at all these products so one of the reasons that we we made this was if and this is not a dig on other websites that no it's not it's not a dig when you sign up to post your projects on other websites people who want to look at your projects then have to get an account maybe they don't want to um there's ads there's data mining there's tracking and so we decided well that's fine there's a lot of incentives sometimes there's contest websites where if you post your project but we thought we would take the data fruit learning system authoring tool and make it so the community out there can publish their projects in two steps these pages look the same with or without and blocking yeah they may even look the same with or without javascript yeah we're we're we're definitely trying to make the web as as good as it is it can um and so you don't have to do anything other than just make an account if you want to post of course but you don't need to have an account to read these we're not putting ads on this there's nothing you need to do if you notice uh this we we support do not track so you can see here that this youtube video doesn't doesn't play because we we comply with do not track um so it's important to us and if you're going to put your stuff somewhere on the internet um this is a home for it if you want to have a cool guide where you can document your projects and more there's a gist gist that can be pulled in from github um it has some of the bells and whistles from our learning system and we keep a good eye on this to make sure all the content is safe welcoming and inclusive for everybody that's playground um and we also have a little preview okay um here is some eight of your factory footage factory footage all right 3d printing we're gonna play two videos back to back the first one is you know what happens the day after halloween it's time to talk about holiday projects all the holiday decorations go up too so we're gonna play a little bit of a recap and video for holiday projects and then we're gonna do a speed-up see you on the other side forget code is channel you can get free stuff these are all the things while you're there you may as well do two factor authentication on your account um because if we do another raspberry pie sale in the future because we're all sold out now but you just have it ready why not why not and use the code while you're there why not okay let's do some line up yeah line up yeah i brought you by digikey and ate a fruit this week it is pick pick switching the smart way what is i'm here this week okay this week this is a new company we're featuring pick it's a german company and they make read relay switches and sensors and more and we're going to be talking about their read sensor chains um which i was like what is that um and when i actually got the board i ordered one and it's a kind of cool idea and it's designed for liquid level sensing but it could be used for other stuff as well so the one cool thing i want to show off first is they've got great graphics treatment i mean like look at this amazing logo that they've got on the front of their catalog um there's like a head and like a light bulb and inside is a read switch so cool but they also do hall effect sensors and magnets and other magnetic sensors so their main product is uh read switches so this is what a read switch looks like if you've never seen one it doesn't literally have a read in it but the metal inside looks like a read you know the kind that you'd have in a like a woodwind instrument it's a thin flat sheet of metal and when you put a magnet nearby the two reads touch together and close the switch and it's encased in this glass bubble with the two metal contacts these are extremely common they're used in like everything for you know detecting when something is touching something or a float sensor we have like these door switch sensors you know when they detect when a window or doors opened those have a read sensor inside a plastic casing for protection because you didn't watch out for the glass bubble you don't want it to crack they have a very long lifetime they're very inexpensive and they're very reliable and you know one of the nice things about them which will talk later is they can work in very high voltages and fairly high currents so fluid level sensing is a common engineering challenge for automation or industrial usage you have you know a bucket or a vat of some fluid and you need to know when you're about to run out of fluid or when the fluid maybe gets too high and you have to vent it out or stop the process refill it very very common so there's a couple different ways to do that i'll just talk about a couple you know ways and why this read chain is different so one is using like one of these e-tapes sensors that you know we stock and for this sensor it's got like a conductive fluid in it and as the water in you know you put you put the sensor inside the fluid and as it rises it squeezes on the envelope and it changes the resistivity and you can measure that resistivity and it's you know continuous which is quite nice you can measure how high the fluid is whereas most float sensors just tell you like when it's hit a certain point or not like it's a very it's a single point sensor this is a continuous sensor but it has to be inside the vat and of course the e-tapes have to come at a certain length if they don't come in the length you want you can't increase the size and you can't cut them down but most importantly it has to sit in the fluid another option is you can use like sonar sensors and you're bouncing sound waves over it but then you know that you know this is exposed to whatever the fluid is it could be hard to sterilize it could get really dirty because it could you know it could possibly come in contact with splashes of fluid and so you know sonar is used for a lot of things but maybe that's also not you know a perfect usage also there's a cone and you know you have to make sure that the cone of the sonar doesn't hit the side of the vat another one is a time of flight sensor that's you know fairly common a more recent type doesn't have as much depth you know i think these go up to like maybe four meters maybe that's long enough you have to have the light be visible they can be a little bit flaky reflections you know and light dispersal on the liquid can affect it and if the material is caustic you have to protect this and it's you know there's you have to get the i-squared c data out and it's a little more complicated and so having level sensors using reeds which is it's like an ancient it's it's reliable and it's known and it's well understood you have you know you see in the center there a single reed and then the magnet is goes around it and everything can be coated and whenever material you want it can be totally hermetically sealed because the you know as long as it's not metal the magnet magnetic field can reach through the plastic material so this is like you know from a video that they have of a single reed that just it's a single point it just tells you is the water above or below and you know this cup of water as it fills in the magnet rises or lowers and as it gets close to the center of the reed switch it closes and then you just detect the closure of the reed switch when you have a single reed though you don't know whether the you know you don't know what the level is you just know whether it hit a certain point so it could be above or below it's a little bit risky if you happen to somehow miss the rises or lowers you won't get another notification you know like the switches either closes or opens it only closes when that magnet is right next to it so to solve this and also if you want to have continuous measurement they're like well why have one reed when you can have multiple so this is a reed chain and that's the board that we're talking about and basically it's dozens of these reed switches side by side diagonal so it's nice and slim and each one connects you can kind of see the bottom I'll show in the overhead in a bit there is a 1k resistor and as each one closes it's going to short the chain against that resistor so if the water's at the very bottom you're going to read zero ohms if it's the next you know the first reed is open and the second one is closed you'll get 1k all the way up to n times 1k resistors you read that resistance and now you know exactly where the float value is and you know the height of the liquid and here's just a diagram showing there's a you know there's a few different variations of this one I think it's slightly different spacing so depending on you know you're going to pay a little bit more for more densely spaced because you need more we'd realize reed switches and then another nice thing about these is you can extend them which I thought was kind of a cool hack so if you go to the overhead I'll show this off because this is I think a good a good visual demo okay okay so um the way this pcb is made is it's like a thick pcb it's like a two millimeter thick pcb and you can see here it's grooved out a little bit it's machined out so that all of these um can uh let's see oh I don't feel like I said I'll zoom in okay so you see each uh reed is here and they're all connected to one common you know ground or high voltage whatever and then they're each individually connected to this chain of resistors just becomes like an R and R ladder right it's like as you know as the shorts you can determine between the two contacts what the resistance is and then if you want and then there's like one extra resistance I guess so it's not if you if it's uh at the very bottom you'll read one k not zero because there's one extra resistor you can um these are symmetric and so you can you know chain them literally even more you can have another one on the other end here and you just solder mechanically and you maybe glue it um and then you can have you know as long as you want this one is like you know about a foot um you want 10 feet you get 10 of these you sort them together and now it's 10 feet long and you just now you're measuring between you know this is maybe um you know 50 resistors this is up to 0 to 50 k and then if you have 10 of them now it's 500 k all within reason to be able to measure with an op amp or resistor divider okay so a constant current source uh yeah so go there okay sorry that's the mechanical variations and then this is how you combine them we just talked about that you can extend them so one of the nice things about you know there's a lot of different ways to read you know tank the water tank levels one of the things that's kind of nice about this is you know you don't need any software you don't need any special you know um firmware configuration of my controller it's a wall resistance in um and because it's not powered externally it's just a switch and you know the magnet is the thing that closes the switch you can pass very fairly high voltages through and you can pass you know some reasonable amount of current as well so you could use this like other than the resistor um that's involved you can use this with higher voltages if you desire you don't have to use three to five volts if you want to power this from you know 48 volts or 24 volts you don't have to worry about doing any conversion um and then you can use an op amp to just like you know get the voltage out and the resistance out and convert that to any voltage you desire so depending on your control circuitry you may not need to have a mic control you can have a fully solid state feedback loop um so i thought that was kind of neat and i'm sure there's lot of situations where this might come in handy um you'll also need of course the float they do sell magnetic floats that cover the polypropylene and a couple other materials um you know one thing that they definitely say is if you have food safe or you know caustic materials this is going to work great you don't have to worry about caustic gases you don't have to worry about the difficulty of sterilizing your sensors because it can be sterilized along with the you know the stainless steel or plastic vat that you're using because again it's fully mechanically and electrically isolated from everything um they also have a couple other thing you know you know while i was looking around um they sell smt relays which i thought was reads i keep saying relay they said i'm used to saying read relay there they sell um smt read switches uh that are stopped at digikey and they also have kind of a cool little like um interactive read switch demo where you can like drag it around and you can like try different types and uh you're like latching type and shielded types and like there's a little magnet you can drag around and you can determine how um the the read simulate the read switch on how it'll act so that's just kind of neat as well all right available on digikey and you know in this post uh uh part shortage world uh when we show things the screen so i can't show you yeah they're usually in stock it says stop so check it out a couple different configurations as well i thought it was neat oh and i wanted to mention one more thing it's designed you know it's designed for float leveling but i thought another thing is i've had situations where i want to measure whether something is moved back and forth on a railing and like you could there's sensors you could use that are fairly complicated but you just want to measure like hey where is something on an x y or like an x position not just a z position um you the magnet could be the slider and you could detect where it is potentiometer would break um you could use like uh a um it's called belt driven system with a wheel ring coder but then you don't have absolute positioning this could give you absolute positioning in in any orientation it does not have to be just z axis okay and that is this week's on impi okay we're gonna do new products um don't forget to code is channel and then after new products we're gonna do some questions and then we're gonna play the interview at the end with lady at any like it's a interview in our interviewing engineer series which we're trying to get going again because it's really hard to get inside the caverns of these companies and interview the people that are actually working on this stuff so let's kick off new products then we'll do questions and then we'll do the interview here we go new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new new So this LED backpack, based on the HT16K33, we love it, it's great, we're doing revisions. While we were revising this, we also added stem and QT ports on it. So if you want to use this and you don't want to have to do any wiring, once you solder the LED matrix on the front, you just plug and play, you can chain these together and set the address and have a bunch of them all together on a chain. All right, next up. We also have a revision of the GPIO bonnet. Oh boy, we could not get the max mcp23017 for a while on the QFN. I revised to use the TESOP because I could get the TESOP. Maybe now I need the QFN, but the time the TESOP was only available and while I was there, I also made it so it's fully assembled. So the 2x8 GPIO IDC ports now come fully assembled on as well as the 2x20 header that goes into the pie and I put a stem and QT port. So it got like a pretty good scrubbing down. Some revisions, I'll be honest, you've done almost 500 revisions now. A lot of them, you know, we just update the silk screen and you don't know I've changed a couple parts here and there because of transistor or voltage regulator was unavailable, but this one is a pretty big revision. Okay, and then these are nearly identical looking cables, but we got them. They're so identical looking, but they're not. They are the half meter long display and camera cables for the Raspberry Pi 5. If you want to use the Raspberry Pi display, the official display, you'll need one of these cables. If you want to use any of the Raspberry Pi cameras, this will convert it from the new Pi 5 22-pin to the old style 15-pin connector. Okay, and then start of the show besides you, Lady Aida, our community, our customers, our team and every study who makes this thing go and everyone who's trying to build a better world together is? Oh, the ADS 7830. This is a fun little ADC. We've had people ask, hey, you know, I want to add a lot of analog inputs to a chip or microcontroller or Raspberry Pi and I like the ADS 10-15 series, but they're a little pricey and they're a little pricey. This is much less expensive. It's about half the price that it has twice as many channels. It's not as precise. It's an 8-bit, not a 10 or 12 or 16-bit ADC, so it's not for precision measurements of like a thermistor or a microphone or whatever, something where you need 10, 12, or more bits of accuracy or precision. What it is good for is potentiometers or a flex sensor. If you're cool with only having 0.5% precision, then 8-bits is plenty. I think for a lot of purposes it is, especially since it's going to be, again, a lower cost and you get 8 full channels. We put this on a breakout board. You can use it with iSquared C. We've got Arduino Library, Circuit Python, and Python coming shortly. You can change the address. You can have up to four of these on one single iSquared C bus for 32 total channels. It runs from 2.5, whatever, 3 volts to 5-volt logic and power. By default, it uses the power as the reference. If not, you can, of course, have an external reference. It'll just be smaller than the power, I think, but I'm actually not sure. I'll take the data sheet for that. But not a lot going on this breakout board. Check the data sheet for the ADS7830. It can do up to 70 kilosamples per second over iSquared C. We just rigged it up so that you can quickly get it going on your mic controller that needs more out-on inputs. Like I said, we're going to do some questions real fast. Then we're going to play this interview. Let's just jump right to the questions. I have a couple lined up. I'll speed it up. Yeah, that's fine. Okay, so questions that came up. I think this was during the INMPI. It was a P or N channel. Maybe that was this question related to that. I don't know. Sorry. Okay. Yeah, I don't know. I don't think I talked about MOSFET, so I don't know what it was regarding. Sorry. Was thinking of a pressure plate that if stepped on shoots little balls in the air with a rocket launcher by Nerf, easy to build. Yeah, there's lots of projects online. Yeah, I would use, you know, one of the things is what I'd learned in school is you could make a pressure plate really easily by taking tin foil and then foam. And then foam, and then you cut holes in the foam. So that's like a Swiss cheese. And when you step on it, it turns into a switch. Yeah, and you could use that to do musical instrument stuff where people can step on it. And then you put carpet over it to protect it. And then, you know, two pieces of cardboard. And like, we made so many projects that were just like, if you step on the thing. Yeah, something happens. Yeah. Good on stairs. Strain gauges could possibly work too. This is from Heather in Discord. I'm planning. Oh, no, the joke was on the discount code P or N channel. Oh, okay. That's fine. Okay. It would be What would it be N channel for the discount code because it's channel? I'd say P because it's pretty good. And for new products. And for new products. Yeah, both. Heather writes, and I'm planning on using my new Raspberry Pi 5 on a mobile project since the Pi 5 uses PD. Any ideas? The best way to get power, it may be. My use case includes several peripherals, so we'll need to have as much power as possible. I think that there, you know, it's even though it's PD, you can still use any five volt power supply and it will work. It just needs to be able to supply as much current as you need. I get one of those like power packs that's just designed to charge a tablet, like a really chunky one that can give you three amps. And I think you'll be fine. Okay. Does the Pi 5 need an active cooler? It does not need an active cooler. If you are running it really hard, you're doing like, you know, open CV or like, you know, running a web browser and a lot of tabs open or whatever playing videos. And it starts to overheat. When it gets to a certain limit, it will automatically throttle down the CPU speed. And that's true of actually every computer. Like it isn't like the old days where you could actually like damage your computer by overheating it. It will automatically clock down the CPU. So it will never get damaged. However, you'll just lose performance. Okay. Here's a question. Can I use circuit Python tutorials for the SP 32 s to tip to feather with the reverse version? Yeah, go for it. Easy. Easy. Okay. You know, for a couple of folks that tuned in later into the way here, I'll do this question before I haven't been able to use the Arduino Adafruit IO library in a while. I see the merger of Wi-Fi and Adafruit IO. Can you provide a little background and decision to make the merge? I don't know if she know that we are merging. I mean, if you're having any issue, you know, post a issue on the GitHub and we'll take a look at it. I know that Brian has been reviewing the guides and updating them, but I think the Adafruit IO library should be working just fine. It does use a lot more Wi-Fi because people are just using more Wi-Fi than Ethernet. Yeah. They're not talking about any of the certificate stuff, right? Because there was that change. No, that's, I think it's just a library. Yeah. Okay. Looks like we got to most of the questions. Okay. I'll, I saw in some of the other chats that some folks got to the show later. They weren't watching live and then later on, or even if they were watching live by the time they realized we were selling pies, they weren't able to set up their account and do so over time. There's only a limited number, sorry. However, here's what I'll say. If you're going to get a Raspberry Pi, there's sites to do pre-orders. Unclear one, the next round is going to come in, but I think we're going to keep doing this. We might do a live thing on a Sunday night when we do Discover the Radiator where we put some pies in. We just have to check with our team. We want to make sure we don't overload the shipping team if we do that. Yeah. There is also show and tell at the end. We'll give folks the heads up. And then there's also Ask an Engineer. I think we're going to keep doing this this way because- We're going to mention the discount code doesn't work. The discount code also, that's the only thing to discount code will work on too. That's something I got to mention. So I know sometimes it's a little tough when you're, you know, you get to it late and you're like, oh man, I missed out. But there'll be more. We did it last week. Yeah. We're trying to- We have no more pies, by the way. That's it. We're trying to best figure out, you know, something because there's a limited number. And you know, we see social media. People are upset that you're doing pre-orders and they're not going to get them for a really long time. So- We need to get your tickets. This is a way to try to do it. And we'll just keep you all informed and giving you all the information as we have it. That's it for Ask an Engineer, the show that's live. We have a pre-recorded interview that we do. Like I said, we're trying to get more engineers from companies who do stuff we happen to have made a board. Let's go. Super cool. With NXP and Digkey. This is Eli. So we're going to do the interview. I'll come back and press the stop broadcasting button after this. But check out the interview. We'll see everybody next week on Ask an Engineer. You know, I'll put the scene or thing at the very end. But take it away past Lady Ada and Eli from NXP. Please, okay. All right. Hey, everybody. It's me, Lady Ada. We're doing this fun recording with Eli from NXP, special guest here. One of the things that we got to do this year. We started this in 2020. It was like, wow, it seems like we get back on Christmas Eve. We're going to totally do this project, which was to do a Metro M7 with NXP and Digkey. Because the IMX RT chip set is one that I think is really cool, extremely fast chips and easy to use. It's like a Cortex M7. It's got some great peripherals. And so finally, chip shortage ended. It could get parts. We're no longer in a pandemic, I hear. And so we were able to get the report out. And we did this really cool thing with Digkey and NXP. We gave away hundreds of these boards to people who ordered from the Ada Food Shop. We also ported Circuit Python over to this chip. And also it's some example code using MCO Expressos. That's just the intro. So we wanted to celebrate, not finish, but top off the celebration of being able to get parts again and being able to build hardware again by having an NXP engineer and marketing and content genius, Eli, come by. And we're going to just talk to him about NXP and IMX RT. And so if you can do this board, if you got one of these free boards, what are some of the fun things you can do? So that's my long intro.  Yeah, sure. Thanks. Yeah, so I'm Eli. You know, welcome to like the secret sanctum where all this NXP stuff happens. So yeah, I've been kind of a microcontroller addict as long as I can remember because I started really young learning on the Apple II. Cool. Well, it was interesting because I was in a really small school district. We had Apple II in the middle school, but we didn't have anything else. So I kind of figured, hey, there we go. Music, and you can kind of probably see a lot of music gear and guitars. But then when I went to college for electronics, I got really into electronics and audio and DSP. And it led to me going to graduate school in Penn State for acoustics. So science of sound and that led me down a path of underwater acoustics and all this fun stuff with FPGAs, microcontrollers, DSPs. You've got a good gig to be at. NXP is like the perfect place if you're like you want to do audio and music and electronics. Well, so it's I look at everything from the lens of like all these new parts come out. And there's always a real audio or acoustics bend to what I do. But I'm like, there's there's more parts than I have time to like play with. But it's really cool that I can see what's coming down the pipeline and like, you know, know what's coming and be able to play with things and, you know, kind of imagine new things. So yeah. Okay, cool. Well, you know, we're going to be I have some questions that I got ahead of time. But you know, if you want, we can kind of be in different directions. But I do want to get people to, you know, be aware because I think for the last few years, you know, there's been pent up demand for new parts, it's been hard to get some parts and also companies have been releasing new stuff. And the IMX RT crossover series from NXP is actually still in like kind of active development. There's new chips coming out constantly in this line. And so here's some of the questions that people have asked me. And so I thought like, I will get it from the horses. So what is a crossover processor? And what's that a microcontroller? Is it a problem? What is it? What does that mean? Well, let me let me I'm going to give you the answer that ZZ Top gave in an interview to Guitar Magazine a long time ago. They said, sorry, are you a blues band or a rock band? And they said, yes. Okay. Now, so it is a microcontroller, but it's a little it's different in the sense that like, there's a lot of problems that you need some some more to do. And certainly microcontrollers is a lot now. And even now I kind of laugh when I see someone say, well, that's a 64 megahertz controller. That's slow. I'm like, Oh my God, like, it's but there's a lot of projects that you might go to an applications processor and Linux. But boy, it'd be nice if you didn't have to deal with some of the complexity that you can get a process that's fast enough that can do all these things but still be easy to design with like a microcontroller. And so the crossover is in that space that it's, you can do really cool application level things with graphics and audio and all this stuff, but still be a microcontroller because it's easy to design. You can run bare metal or toss. And then you can also kind of get edge into that applications processor space with a lot of flash and memory. One of the big things on this part, there is no flash in the chip. It's external. So you have a lot of flexibility. So for me, it's beautiful because I, I'm a microcontroller person. Like I love seeing it pushing that space. And even now the 1170 is in the gigahertz range. It's gone ludicrous mode. So yeah, we'll run really fast. It's flat. It's flat. Okay.  A lot of people haven't played with M7s. You know, the famous series of the STM, F7, H7, you know, they're kind of expensive and they're hard to get. And so this is kind of interesting. It's like a two dollar M7, which is like kind of interesting. It's like, wow, it's, you know, eight bit pricing, but it's, it's got seven. Seven is bigger than four. Four is bigger than zero. So what, what are the benefits of going to an M7 processor? Like can you, can we sort of be like, what, you know, anything about that, that core itself that is beneficial to people? Yeah. So here's the good news is, is everything you know about, say the M4 directly applies because the instruction sets actually the same. Yeah, they're super set. It's just, you get to get more. So what are you getting more? Well, what you're getting more of, there's actually the way it's implemented. It's more deeply pipeline. So it's actually more efficient with some of the same instructions. That's number one, you'll just get a benefit. The other big architectural change is the way kind of RAM is organized around the chip. So it has this concept of TCM tightly coupled memory. So the ITCM has this really wide 128 bit interface. So if you're running out of RAM, it's fast because it's pulling in a lot of instructions and it has the same for data where it's has a really wide 64 bit data path. So just with, you can actually run the same binary from an M4 on an M7. Or link in a library that if you're in a library. I'll ask just that as long, you know, there, you know, there's always some, some caveats, but the instruction sets fundamentally the same, but it will run faster at the same clock speed simply that memory and you, right? I think the M7 like that M4s don't always have a floating point. I think the M7s always do, right? Yeah. So in there's also an option for double precision floating point. If you want to do that, there is an memory protection unit option on the M7s. The other things get added. For example, that's really important on these external flash is a cache controller, right? So if you're running from like QSPY flash, you can get, be really fast because there's a instruction cache. So you can add other things too. It's not just, you know, that flash. Yeah, so that leads into a questions, you know, because, you know, we designed this chip and it's got, I think 120K. So we designed it with the entry level, IMX RT 1011. And we put on eight megabytes of QSPY flash, but we did have some people ask us, hey, you know, 128K, it's a lot of RAM, but I want lots of RAM. You want a lot of RAM. How do you, how, you know, maybe not on this chip, I don't know if this chip has a RAM controller, but do other chips have RAM controller? And how would you add more memory there? The good news, I'll have to look at the, the, the variant of that part. So that flex spy controller that the flash is connected to, it can just as easily do PS RAM. Oh, PS RAM is inexpensive. There's optical PS RAM now that's used. Oh yeah. And that's what's the higher end. Even this one, it might not be pinned out, but the flex spy can do optical. And a good reference actually is like the teensy 4.0. They have an example of PS RAM on like flex by two. Now this part doesn't have as many flex by controllers, but I think even if there's one, you can still get. So that's the easy way. Now there is a traditional RAM like a bus interface on the parts that have the pins so you can run like a 32 bit wide or 16 bit wide RAM, but the PS RAM is definitely a low hanging fruit and it gets run through the cash controller. So like it can be super fast. All right. So now we're going to do some speed rounds so we can get to your demo. So do these chips support high speed USB? So many people have full speed USB, but they want high speed. Can we get that? Oh yeah. So that's baked in. So, you know, the I key. What was interesting is directly in probably it's important to me in the open source community to mention that tiny USB and tiny UF 200% support across the arcade family. So in actually it's super secret with the new MCX line. I've already it's already coming that at launch tiny USB and tiny UF will be available. We love that. So that was the goal of doing the 10 USB. Okay, then two more quick questions and I do want to get I want to get to your your demo as well. So you mentioned there's a memory protection unit. Can these chips run Linux? I mean, this is like a 500 700 megahertz. Oh yeah, you certainly could. I am though on I say if you're going to run Linux go to a processor that can really run Linux. I think an RTOS makes 100 cents, whether it be free or some of your favorite RTOS is what you think? Number one, I mean, I'll admit this. I'm a huge Zephyr fanboy. I write for the Linux foundation. Okay. NXP support Zephyr. They have developers on Zephyr. So for this part, it's the it's pretty much the ideal use case for Zephyr because there's a lot of high level things you can do. So you can almost get a Linux like experience. Yeah, but still an RTOS, you can still directly hit registers and do all that kind of stuff. People love people love Zephyr. Okay, cool. Well, you know, we sent you where you got one of these Metro M7 boards. I got right here on the bench. Okay. And then you said you want to show a demo. So I was going to share your screen and maybe you could. Yeah. Well, let me switch just so I can switch to my, I'll call it Frank view. Okay. Because there's Frank. I'll hide myself. Yeah. There we go. We say hello to Frank. So he's a Franken. This is the Frankenstein, you know, plywood platform. So I have the Metro M7 connected to now I load an application today. No, it was Zephyr. And I used the SWD interface that's on the Metro M7. And this is a NXP MCU Link Pro.  So yeah, so I kind of hooked this up and got like a little Zephyr demo running today on the M7. Okay, that's super cool. So I have to add myself back. So let's go to your computer and then you can maybe tell us about the demo you're running. Yeah. Okay, cool. Okay, I see, I see a logo and this is Metro M7. Yeah. So which, yeah, what you're looking at, I just have like a putty instance and I got a this shell. So Zephyr comes with this beautiful shell like out of the box. So you get like commands.  And this just is like almost out of the box. Like there's an I2C shell. So you can do something like I2C scan. I don't have anything hooked up, but you know, it's kind of like this Linux-y thing. But this is still a microcontroller and still, you know, a lot closer to the metal. So did you do a board definition for the Metro M7 that people could check out? Actually, I didn't have to. So when you guys designed this, you picked IO that aligned really closely with the EVK from NXP. So the serial, all that stuff, I actually had the chain of nothing. I just used the EVK board definition. And so that's usually where I start. And then you can add like overlays if you want to do small changes. And I actually wrote an article for the Zephyr Foundation on, or Linux Foundation on how do you start from scratch and do your own board? And I did it for, I actually did it for an IDEMMXRT685. Okay, well send over that link and we'll post that, you know, people will probably want to follow along. Because I think- Here's my favorite command for a demo. The first thing I do is put in cow command. So you can go, you know, red pound, you get a red one. Oh, that's nice. So yeah, so I do this together show like Zephyr kind of does this stuff. There's almost very little code to do this. It's just you can add it in and then you can start laying on all your other stuff and runs great on a processor like, you know, in the RT with like the M7. That's neat. I like that there it's like, okay, you've got this RTOS running, but you can actually, it's like as you have shell in it, which is, like you said, it's Linux-like, but without the weight of Linux. And I like that it's like you can do some scanning and oh look, you can like write memory directly from the shell. That's cool. I'll check it out. And I'm doing another kind of blog and article in a few weeks that I'm marrying the NRF 7002 with an RT board and to show the Wi-Fi. So Wi-Fi has a shell and it's really cool. You can do things like connect and your DNS and all that kind of stuff. And it's just baked in. Okay, Nordic will love that too. A great combo. All right, cool. This is great. If you can, yes, send us the links to the article and we'll post it. I do want to flip back to your face. Oh yeah, let me flip back. Let's go back. Let me make sure I can run the machine here. Okay, well it's been 15 minutes. It went like it's three seconds, but we've actually been chatting for 15 minutes. So I do want to tell people you can pick up one of these NXP IMX RT-1011 Metro M7s. Digi-key has them in stock. So get them Digi-key. They'll ship them to you much, much faster than we will. And check out the other articles because apparently if you want to know about Zephyr, our cortex ship, he's like the expert and he's got like a really, really cool workshop. Very jealous, lovely skulls and keyboards and oscilloscopes. All right, any other projects or hints, stuff you want to tell people about the NXP or IMX series? Yeah, so actually some of the links, one of the boards, I kind of show it at the beginning of the end of starting from board design, meaning you have nothing all the way through brooding up Zephyr on an RT part. So that's useful. I did that specifically. It's codenamed Super Monkey and it actually powers the guitar you see in the background. I'm building V2 of the guitar around Super Monkey. And so the RT family actually sees a lot in like high-end audio and USB audio just because it has the USB and it can crank through a lot of... It's got great I2S support. Definitely that was like very easy to add. And we did a bunch of audio projects with the IMX as well because it can play eight-way files concurrently. No problem off of the QSPY. So we did this cool audio sound effects board and it did all the effects on it once. In the commercial audio, it does find itself in those areas as well as I do know of a pyrotechnics application that is at places like Disney that have modules running on an RT. It's the 1020. It's not a little bit... Yes, I want to do a version of the 1020, 1040. I would love a feather. So I love it. Okay, no, we have... We have products now. Well, it was a pleasure to hang out with you and now I'm excited to design more with IMX RT parts. Grab this mattress, check out Zephyr, check out Eli's articles. We hope to do more and more with NXP thanks to NXP for... And did you keep for promoting and supporting this work? It's great to try out other chips in the family and thank you Eli for coming by. Yeah, it's great to be here and we want to help as much as we can because I'm a huge... I actually am a huge circuit python advocate as well for prototype things. I do it a lot just before I write C code. I'll just say I just want to see something work. And so it's a huge advocate. Awesome. We're doing it. All right. Well, thanks everybody and thanks for watching. Bye everybody.


The Equitable Life Assurance Society presents This Is Your F.B.I. This Is Your F.B.I. The official broadcast from the files of the Federal Bureau of Investigation presented transcribed as a public service by the Equitable Life Assurance Society of the United States and the Equitable Society's representative in your community. A-H-O. A-H-O. If you contemplate placing a mortgage on your home it will pay you to remember those letters. They stand for the Assured Home Ownership Plan of the Equitable Life Assurance Society. A money-saving home-saving plan designed to speed the day when you can say, No mortgage on my house. I own it free and clear. If that appeals to you, please listen carefully in about 13 minutes for full information on the Equitable A-H-O plan. Tonight, the subject of our F.B.I. file, Armed Robbery. It's titled, The Innocent Santa Claws. Nearly all criminals are emotionally childish, undependable and unscrupulous. Some, like the characters you'll meet in tonight's dramatization from F.B.I. files, are more vicious than others. But make no mistake about it. The dashing and charming Robin Hood types are few and far between. Criminals taint with unhappiness the lives of all those with whom they come in contact. The little niceties of life, the decent courteous kindnesses, the Christmas spirit itself that make up normal people's lives are completely foreign to the vast majority of them. Whatever they do is for themselves alone. One of your F.B.I.'s major purposes in bringing you these programs is to present the underworld as it really is, without glamour, without sentimentality. Tonight's F.B.I. file opens in a cheap hotel room in the downtown district of a large eastern city. A 12-year-old girl is alone in the room. She walks to a full-length mirror on the wall and sings a song. When she finishes, she bows to the mirror. Thank you, ladies and gentlemen, for your kind applause. That was a great act, but we've got a long show. So let's meet a star who needs no introduction. Wait a minute. I didn't hear you come in. I tried to bring on a star that way. Oh, but I was just trying to have a... Hey, what theatre were you playing? The one I'm named after. All right. You're on the stage at the Roxy. A sensational flash act to just finish. Now your star's on next.  But, Daddy, you always say, and now a star who needs no introduction. I know I do, but then I introduce him. And I tell a couple of jokes. Like, as I was coming in the stage door tonight, a bum came up and asked me for $2 for a cup of coffee. Why, you can get one for a nickel. And he shrugged his shoulder and says, Well, can I help you if I'm a big chipper? Now he got the audience going, see? So you slug him again. You say, that bum is sure crazy. I met him yesterday, too. And he asked me for $8 for a piece of pie. And I said, $8 for a piece of pie? Well, man, you can get one for a dime. And he shrugged and says, Mr., do I tell you where to eat? Now they're warmed up, see? And you bring on your star. You get it? Oh, yes. Oh, say, anybody call me? Oh, Pete Morrow. Pete Morrow, what do you want? I don't know. I got the message at the desk. Hey, maybe he's got some action. Gee, daddy, you think so? Well, he's my agent, Eddie. He wouldn't call to find out how I was. Hey, maybe they need some next-to-closing insurance at the palace. Can't be anything. Wow, wait! Well, come on, hit me with a good luck kiss and I'll go see him. I'll get the message and let me tell you, brother, I am ready. I got two new routines and I got a kid writing me a parody on Melancholy Baby. Way to give you the opening. I come out in a broken-down suit, see? Hey, Fred, Fred, I didn't call you for a theater job. Oh, that's okay. I do just as good at nightclubs. I'll just move this song up. Wait a minute, Fred. This ain't a nightclub job either. A guy uptown called me this morning and he's having a Christmas party for some kids at his house tonight. That's it. Now, look, Pete, I know Vorderville's dead, but there's still a lot of places where I can... There's 25 bucks in it. Well, look, I give my dresser more than that. Fred, look, I better level with you.  I couldn't book you in a charity bizarre. You couldn't book Abraham Lincoln at a patriotic rally. You want the job or not? No. Okay, then I'll get somebody else. Well, go ahead. Oh, Fred, by the way, how's your kid these days? Great. Good. I'm glad to hear it. Is she eating good? Well, sure. I gotta cut her down. She's getting a little heavy. Well, she's even... Yeah? Even what? Okay. I'll do it. Your Santa Claus outfit's right there in that box.  Now, you'll be ready. How'd you make out? Wait, wait, wait like I get rid of this box. Now, I'll take that hug. Daddy, what happened? Well, Pete Mara told me Oscar Hammerstein says he positively can't do his next show without me, and so that put Pete in the spot. Why? Well, Max Gordon's got a script, and he told Pete if I don't do it, he'll never hire another actor from him. Oh, the spaghetti! Ouch! Did you burn yourself? I'm sorry. I didn't keep watching and the water all boiled out So what? That was our last can.  But they said at the desk, no more signing. I'm paying them cash.  Aren't you eating with me? No, honey. Where are you going? Well, you see, Oscar Hammerstein is crazy to have me in the show he's doing, but the angels don't know me. So Oscar asked me if I'd do him a favor and audition. Oh. Well, you never saw a guy so sorry in your life asking me to audition, but I don't mind. I knew the spot he's in. Can I go? Oh, no, no, no. Not tonight, honey.  That's it.  But, Daddy, I always thought when they did a show, they hired the actors before they bought the costumes. Oh, they do. Then how come Mr. Hammerstein had your costume already? What? On that box, it says Santa Claus costume, size 42. Oh, there! Well, you see, after the audition, I'm going to play a benefit. Daddy? Okay. I never could, can't you?  I'm playing Santa Claus at a kid's party uptown.  Yeah. Oh, that's wonderful! Hmm? Daddy, that's great. Santa Claus is the biggest star in town right now. Who's bigger? Hope, Crosby, the Lone Ranger? They're nothing at Christmas time. Santa Claus and his reindeer are headliners. Maybe you're right. Of course I am. It's perfect casting. They finally got a star playing a star's part.  Yeah, I understand. Thanks, honey. You Fred Harper? Yeah. All right, get in. Hey, who's throwing this party? Mr. Colwell. You his chauffeur? Uh-huh. See, look, I never worked a thing like this before. You mind if I try a couple of gags on you? Go ahead. Well, I figure I'll walk out and say, I know Santa Claus is supposed to come in through the door, but them chimney sweeps have got a real strong union. Ha ha ha! Nothing, huh? Maybe it's a little too fast. How about this? I'd have been here sooner except for one of my reindeer. He showed up late because he went to the movies. It seems he wanted to see the picture because he read the book. Ha ha!  You know what, he gets the law to laugh in this city. Uh-huh. What are we doing down here by the river? You, uh, see that sign? Which one? No! We're on a street corner near the local FBI field office. Special agent Jim Taylor meets police detective Mike Wolk. Hey, Mike! Oh, hello, Jim. I just come up to see you. Oh, what about? A jewel theft last night. Where? Uptown, the home of some people named Caldwell. What's our jurisdiction? Interstate transportation. These Caldwells live in a big house on the Heights just off the approach to the Huntington Bridge. You know where the cloverleaf turn begins.  Santa Claus stuck up the place. Oh, no. Yeah? Tied up the children, the Caldwells and their help, and then he emptied Mrs. Caldwell's jewel case. Hold it. Hold it, Mike. Lights against it. How much did Santa grab at the party? About $15,000 worth of jewelry and $300 in cash. Oh, that's quite a haul. After he left, one of the parents wiggled over to a window and saw him drive across the bridge. Oh, it had a broken taillight so they could follow it all the way. The alarm's already gone out on the car. Come on. Mike, any prints found around the place? I haven't been up there yet, but I doubt we'll come across any. Part of the Santa Claus outfit was a pair of rubber gloves. Oh, I see. We won't need the prints for identification, though. We know who Santa Claus was. Oh. Mr. Caldwell told me he was hired through a theatrical agent named Pete Morrow. And learned that he sent an actor named Fred Harper. Uh-huh. Find out where he lives? Yeah, the hotel vending. I called there, but his room didn't answer him. You interviewed the, uh, victim ship? No. I was going to do that now. Okay. I'll go over to Harper's hotel. What do you want, Mac? Hello there. Special Agent Taylor of the FBI. Here are my credentials. What can I do for you? Are you pleased to ring Mr. Fred Harper's room? He's not in. Seems he didn't get home last night. You know Harper? Very well. I was once his straight man. Is he in trouble? Yeah, seems to be. Mr. Perry, have you heard from my daddy yet? No, I haven't, Roxy. Mr. Taylor, this is Harper's daughter, Roxy. Mr. Taylor's from the FBI. Hello there. Do you know where my daddy is? No, I don't. Can you help me find him? I mean, please. I will do our best, Roxy. Did you, uh, see your father last night? Yes, sir. He was going to play a party as Santa Claus. Were you here when he left? Yes. A man called for him. You see this man? Only from the window. He was in a big car. Daddy got in and went with him. What kind of a car was it? I don't know. Or was it a sedan, a convertible? A sedan. What color? I couldn't tell. But I do remember one thing. One of the lights in back was broken. Mr. Taylor, why are you asking me all these questions? Well, Roxy, somebody came to that party wearing a Santa Claus outfit and held up the people. A real hold up? With a gun? That's right. Not daddy. He couldn't do anything like that. He's not a crook. Mr. Taylor, phone call for you. Oh, thanks. Please believe me, Mr. Taylor. I'll be right back, Roxy. You can take it on that phone. Fine, thanks. Hello. Hey, Jim. This is Mike Wolfe. Yeah, Mike. Fred Harper's been picked up. We will return in just a minute to tonight's exciting case from the official file which shows how your FBI helps promote America's security. And now listen to the most important security letters in the lives of thousands of homeowners. A, H, O. A is for assured. H is for home. O is for ownership. The assured home ownership plan of the Equitable Society. A is for assured. H is for home. O is for ownership. A is for home ownership plan of the Equitable Society. It's America's finest plan of home ownership because it gives four special benefits not always found in other mortgage plans. First benefit.  That's right. One of the big objectives of this Equitable Society plan is to speed the day when you can proudly say No mortgage on our house. We own it. Free and clear. Here's why this can happen so fast. Every equitable A, H, O plan combines a low-cost first mortgage with life insurance protection. One monthly payment takes care of both. Thanks to the insurance element, a constantly growing cash loan fund is created. Year by year, the mortgage grows smaller and the cash loan fund larger until it actually is big enough to pay off what's left of the mortgage. This explains how hundreds of A, H, O families pay off their 20-year mortgages in about 14 years. That's six years ahead of schedule. Second benefit of an equitable assured home ownership plan. If the owner dies, his widow doesn't inherit a mortgage. She inherits the home, free and clear. And what's more, the Equitable Society not only cancels the mortgage, but also returns to the widow every cent her husband had paid to reduce the principal. Lastly, this plan is a money saver at all times. The mortgage draws interest at only 4%. So for many reasons, a man may consider himself lucky. His health, age, income, and the location of his home enable him to qualify for an equitable assured home ownership plan. For full information, see your Equitable Society representative or write care of this station to the Equitable Life Assurance Society. Remember, the sooner you start an equitable assured home ownership plan, the sooner you'll be able to say no mortgage on our home, we own it, free and clear. And now back to the FBI file, the Innocent Santa Claus. We referred previously to the selfishness and callousness of the criminal mind. During the Christmas season, when the vast majority of us are in a genial relaxed mood, the underworld does not hesitate even at this season to strike often and hard. There's no off season in crime. Being off guard is not safe at any time. The men of your FBI are convinced that it is high time to stop romanticizing gangsters and hoodlums. FBI agents who come in contact with the underworld daily know it for what it is. Ruthless around the calendar with no days off for good behavior. Tonight's FBI file continues in the hospital ward at the city jail. Special Agent Jim Taylor is interviewing Fred Harper. Mr.  Don't these lumps on my noggin prove it? But Mr. Caldwell says he has no chauffeur and never sent a car for you. Well, whoever the guy was, he belted me out. And that's all you can tell me. Mr. Taylor, do I look like a guy who'd stick up a kid's party? Unfortunately, looks don't mean a thing. But I've never been picked up even for jaywalking. The only record I got is in the back issues of variety. Are you sure you can't remember anything about this man? He's a tough audience. What do you mean? I've given him two jokes, both buffs. You never even cracked a smile. Look, my agent can prove they sent a car for me. Pete Mauro in the central building. Yes, I know. Detective Wolf spoke to him. He claims he gave you the Santa Claus outfit and Caldwell's address, and you were supposed to get there by yourself.  Well, his word is better than yours right now. Why? He didn't turn up with any of the stolen jewelry on him. But I'm being framed. No, you're not. This case won't be closed until we find the rest of that jewelry. Albert, don't hold out on me. I ain't. Is this all the stuff you grabbed last night? Except for the two hunks I stuck in Harper's pocket. Well, the papers made it a much bigger job. Oh, the papers, the papers. They got Illinois as a seven-point favorite in a rose ball. Can you bet them? Not me, no. Well, the same with stick-ups. I want his heist to the joint, got 200 clams. The papers come out and say I grabbed 8,000. This is the age we live in, kid. Now, we're gonna get the fence this, huh? Well, I'm not gonna tell you that. Why not? Well, because the next time we do a job, you might take the loot straight to him. Well, I wouldn't do that. Well, let's leave it this way. You don't mind, eh? I suppose I do. Well, it won't make any difference. All right, then I don't mind. Fine.  Hi, honey. I got so scared last night when you didn't come home. Well, keep being scared. We're still in a jackpot. Mr. Taylor told me he was coming to see you. Didn't you tell him you had nothing to do with it? Mm-hmm. But I'm still here. Oh, they'll let you go? Oh, sure. When they take this turban off my noggin, they'll move me down to our regular cell downstairs. Great guy you got for an old man. I know you didn't steal anything. Thanks, honey. Oh, hand me that bottle of pills.  And a little water, honey. Thanks. What kind of pills are those? I don't know. Well, here goes.  Nothing, eh? I just don't feel like laughing. Daddy, will you be out Friday? I doubt it. Why? I promised my teacher. Promised her what? Well, the school Christmas play is Friday. I told her you'd be there. Oh, that's fine. I'm such a hit here, I think they'll hold me over. But I told my teacher what a sensational Santa Claus you'd do. Daddy, we've got to figure some way to get you out by Friday. Well, if you've got an idea, cut me in for half. Isn't there anything we can do? Sure. Just keep hoping, honey. Mike, I got a report from our lab on that jewelry. Oh, it's a word, Jim. They found a single latent fingerprint of one of the bracelets. We've got Fred Harper's prints right here. Oh, I've already checked. It's not one of his. Well, it doesn't prove he's innocent. I can't help feeling he is, though. You believe the story about the mysterious stranger posing his call with Shofan? Yeah, yeah, I do. Harper's little girl told me about the taillight on that car being broken. There's no way she could have known that if she wasn't telling the truth. Yeah, pardon me. Sure, Mike. Well, speaking. This is Captain Gordon, State Police. We've got that car you set out the alarm on. Where? One of my men just found it where Highway 81 hits the turnpike. I'll see that nobody touches it. Thanks, Captain. Come on, Jim. The car's been found. Yeah, that's the car, all right, Mike. Mm-hmm. And here's the broken taillight. Yeah, let's see what's inside. Mike, look here on the back seat. Huh? Santa Claus outfit. There's a pants, shirt, hood. There's a whiskers on the floor. Any labels? I'll take a look. Yeah. Yale Costume Company, but that's no help. Harper's agent admits running this suit. Well, I suppose we go through the trunk. Oh, wait a minute. I'll look up front first, Mike. All right. Police went over everything in the car for prints. It was clean. Yeah, let's take a look in here. Well, these glove compartments are like the clocks. They never work. Ah, these. Road masks, instruction books, baseballs, corker. Mike, Robert Gloves. Let's head back to town and get these to the lab. Hello, Pete. Well, Fred, how come they let you out? Mr. Taylor here can tell you. Oh, Taylor? Yes, I'm a special agent of the FBI. I'd like to ask you a few questions, if I may. Sure, sure, sure, anything. Sit down, sit down. Thanks. Now, Mr. Morrill, you told Detective Wolfe you made no arrangements to have Harper picked up the other night. Ah, that's right. We found that car yesterday. The one he used in the stick-up? Well, the one that was used, but not by Harper. We also found the gloves that were part of the Holdup Man's costume. Oh, so? So our laboratory got a full set of prints off the inside of those gloves. One of the matches of print we got from a piece of jewelry we found in Harper's pocket. Well, what's that all got to do with me? Well, the prints belonged to somebody named Al Bedford. Who? Mr. Taylor, I told you what to expect. This guy wouldn't give you the right time in Elgin, Illinois. Mr. Morrill, you know Al Bedford. Well, is he an actor? He's a professional criminal. Well, how would I know him? His record shows you once gave him a character reference when he put in for a parole. What's his name? Al what? Al Bedford. You better be nice to him, Pete. Maybe he'll give you the job booking talent on those prison shows. Say, I don't know what either one of you guys are talking about. Oh, hi, Mike. We caught Al Bedford. I just got a full confession from him. Mr. Morrill here was his partner. Ah, that's a lie. Hey, Mr. Taylor. That clears me now, huh? Yes, it does. Then I'd better call my kid and find out if there's still time to do that Santa Claus bit. All right. Mike here can drop Morrill off at the city jail. I'll go with you. The auditorium's down this way, Mr. Taylor. That's pretty big school. Mm-hmm. Got the biggest stage of any school in town. That's why Roxy goes here. No. I think she's majoring in proscenium arches. What time you got? It's, um, 4.15. Hope we're not late. Hey, you want in on a secret? What? I'm scared. Scared of what? Walking out on that stage in front of 2,000 kids. Oh, you've been on plenty of stages. Yeah, but what do you do with Santa Claus? You can't get hokey. You gotta play him straight. Oh, I guess this is a stage door. I saw four kids walking here wearing halos. Oh. They've started. Yeah. I guess they got tired waiting. Hmm? Can't blame them. You see a little girl around them? No. Look. That's why. The old man in the Santa Claus costume over there. Well, come on. Hey, where you going? I've been canceled. Daddy. Daddy, daddy. Honey. You made it, daddy. You made it. Yeah, look, honey. Mr. Taylor and I are going out front now and catch the show. Out front? No. We don't want to hang around backstage here and get in everybody's way. But you're Santa Claus. We can't do the show without you. Now, baby, don't let me down easy. There's Sam Whisker sitting over there on that trunk. Oh, that's the janitor he was standing in for you till you got here. Well, why don't you let him do it? He's got no Santa Claus material. Daddy, you promised me. Yeah, but suppose I lay an egg. You? Oh, daddy, you're teasing me. OK. I'll do it. I think I'll go out front to watch this. All right. And thanks again, Mr. Taylor. You're very welcome. And merry Christmas. And the same to both of you. Oh, let's make it bigger. Let's make it merry Christmas to everybody. And heaven and nature sing and heaven and... And now we bring you a message from the Book of Luke in the New Testament. A message shared with you by FBI Director J. Edgar Hoover, every special agent and employee of the Federal Bureau of Investigation. A message also shared with you by every officer and employee of the Equitable Life Assurance Society of the United States. A message which comes to from those who bring you this weekly program. A message written in simple words. Glory to God in the highest. And on earth peace, goodwill toward men. The incidents used in tonight's Equitable Life Assurance Society's broadcast are adapted from the files of the Federal Bureau of Investigation. However, all names used are fictitious, and any similarity thereof to the names of places or persons living or dead is accidental. Tonight, the music was composed and conducted by Frederick Steiner. The author was Jerry D. Lewis. Your narrator was William Woodson, and special agent Taylor was played by Stacey Harris. Others in the cast were Anthony Barrett, Walter Catlett, J.C. Flippen, Tony Hughes, Bill Johnstone, and Anne Whitfield. This Is Your FBI is a Jerry Divine production. This is Larry Keating, wishing you a merry, merry Christmas from the Equitable Life Assurance Society of the United States and the Equitable Society's representative in your community. And inviting you to tune in again next week at this same time to This Is Your FBI. Stay tuned for the adventures of Ozzie and Harriet. There's fun for the whole family when Ozzie and Harriet come your way next. This program came to you from Hollywood.