3D Hangouts. My name is Noah Ruiz. I'm a designer here at Adafruit and joining me every week is remember the Pedro. Good morning everybody. I'm Pedro's creative tech here at Adafruit. Every week we're here to share three printed projects featuring electronics from Adafruit. That's right. This is where we combine 3D printing and deal with electronics to make fluttering wings. Hello everybody and welcome to the show. We're hanging out in the Discord chat room. If anyone would like to join us during the live show you can do so by joining the Discord server. The invite link to that is Discord.gg slash Adafruit. It's also up here in our little header area, the little purple bar. Hello everybody. Good morning. Thank you so much for joining us this week. We got a lot of fun stuff to show and talk about so we can't wait to get started. We are not just in Discord hanging out in the Twitch, in the YouTube, Facebook, LinkedIn, Periscope, and any other chat room we're streaming through a stream yard. Not stream yard. Re-stream. I owe. Lots of streams going on. Even shout outs to everybody hanging out in all of the chat rooms. Starting off with Ms. Certainly Bruce. We got Rollolds on the YouTube chat. M. Albert. We have on the Facebook and Twitch as well. Good morning everybody for hanging out. Beautiful morning here in central Florida. Let's go ahead and jump into the weekly housepeak keeping. Yeah, sure. Well, we started off with the Discord server, so that's where we're hanging out. But also you can check out Adafruit.com slash free and find out all the freebies that are going on. This is an ongoing kind of deal. So let's scroll on over. So if you head on over to Adafruit.com slash free, you can see all the different tiers. For orders that are a dollar or more, we're still giving away the black surgical mask for the 100 days of masking. There are still a couple of days left. I'm not sure how many days are left, but there's still going on. For orders that are $99 more, you get the free mask plus a Adafruit promo proto. That's the half size spread board. For orders that are $148 or more, you get the promo proto, the free black surgical mask, and a free randomly chosen stem acuity board. And there's new ones like every week. So you get a randomly chosen one. If you have an account, we make sure that you're not getting the same one. If you don't have an account, you'll just get one randomly. For orders that are $200 or more, you get the free stem acuity board, the promo proto board, the black surgical mask, and free ground shipping for continental US only. And for orders that are $299 or more, you get the continental free shipping from UPS. You get the stem acuity board, the half size promo proto, and the black surgical mask. You can get as many as you want. You can check out the site. Again, that's adafruit.com slash free to get info on all the stuff. All right. So we kick off the shows of the week with from the desk of Lady Ada. She does the great search with Digikey every Sunday at random hacker hours. And this week, it was on Sunday at around 9 to 10 p.m. And we had some good times. And then on Mondays, normally we have the circuit Python meetings on Mondays. It happened at 2 p.m. Eastern time live in the discord chat room. So if you want to join it live, you can join in on Mondays at 2 p.m. Eastern time and listen on the the the core devs in the community. All right. And then on Tuesdays, we got JP's pick of the week that happened every Tuesday at 4 p.m. Eastern time or 1 p.m. Pacific time. Today's Wednesday. We got a slew of shows with 3d hangouts. And then later we have a show and tell at 7 30 and then at 8 p.m. Ask an engineer. And then tomorrow is John Park's workshop at 4 p.m. And then Scott's on Fridays at 2 p.m. Pacific time. If you are interested in newsletters once a week, Adafruit releases a newsletter that's focused on the new products that were added to the shop. So you can subscribe to that by heading over to adafruit.com slash newsletter. For a daily digest of news and stories and beyond, you can go to adafruitdaily.com and check out all the different categories that you can subscribe to. It's a separate kind of account. So it's not tied to your Adafruit account. So we make sure we don't spam anybody that way. So if you'd like to subscribe, you got to opt into it yourself. There's lots of categories like 3d printing, biohacking, make a business, and of course Python on hardware. I think the latest edition was IOT Monthly by Brent Rebelle who heads Adafruit I.O. Which we have to give a shout out to the new dev blog videos that he's been putting out. You can find out a blog post to those as they're released on blog.afruit.com for all of the latest updates on that. Maybe we'll need a new banner, an IOT banner. All right, we're going to jump back into Discord and say hello, everybody. Thanks for hanging in there with us. Good morning, everybody. I got Bradley joining in saying, hope all is well. Yeah. Likewise, I hope everybody's doing well. Okay, are we ready to jump into this week's project? Let's go ahead and talk about some Fluttering Fairy Wings or Dragon Wings or whatever Wings, any type of wing will work with this project. Yeah. So this week we're releasing a little bit later. I think we're going to have the Learn Guide for the Anatronic Cosplay Wings released sometime this week. It's currently in review. So we'll get that out as soon as we can. And same thing with the video and stuff. So I guess I'll start off with a huge shout out to Erin St. Blaine. This was spearheaded by her. She really wanted a pair of Fluttering Fairy Wings and we collaborated on that on the projects. We did the 3D printing and she did the code and the construction of the Fairy Wings, which we will talk about. So really cool. Lamar has actually done a Fairy Wing type guide several years ago. So a bit of a history. This is Lady Aida. She's linked to her old blog LadyAida.net. This is before Aida Fruit, before the learning system. This is how she, this whole old blog that's still a lot, yeah, it's probably, it's, I'm not sure how it is, but it's probably, so this is cool. It's got EL wire in this kind of butterfly wing format. It looks like it, there's a, you can, she walks through the construction of it. This is the first time I'm seeing it folks. That's why I'm a little out of words because like, whoa, this is awesome to see something a blast from the past. And I actually haven't seen wings that look this good with this edge-lit effect. So shout out to Lamar for like pulling this up. She never mentioned it. That's why I'm like super surprised about it. But hey, this is in good Lamar fashion. This shows that she's been documenting for decades, even if it's just like photos. Like this is very, very applicable to today. Like you could still make these from today. So shout out to Lamar for, for throwing that in there. Yeah, there's also the fair wing construction technique was inspired by the Fancy Fair Wings. Is it a YouTube link? If you want a more thorough tutorial on like constructing with this technique that we'll show in a little bit here, we have a page as well. So yeah, this is the overview page and it just kind of has some, some parts lists here of all the things that we need. Here's Erin. She did a really cool photo shoot. She went with the aviator kind of steampunk aesthetic, which works really well with the whole, with the whole look. So for the parts, of course, feather, feather wings. This is the most feather project ever, folks. You have two wings. You use two feathers. You have a doubler feather wing. Come on, guys. I want some feather puns. So if you guys come up with some cool feather puns, I have, I just, I'm just now realizing that this is a feather wing project. Feather wings for some feathered wings. Yeah. And I just jumped in the discord to see if like who's got the first. All right. So back over to the learning system. We're using the feather m4 express because of its speed. It's got circuit python. This is a circuit python project. So when you have your feather, you plug it into any computer that has a USB drive. And there you have your libraries and your code and image assets. If you had that or sound effects, if you had them, and this is super expandable with the feather and the feather wing. So if you want to add accelerometer control or like I said, sound effects, because it's on the feather platform, boy, is it going to be easy to add that in. And the other hero is the feather wing, the servo feather wing. This thing can control up to eight independent servos, which is a lot of legs or wings. So if you wanted to add ears, a tail and eyes, you could totally use the servo feather wing to control up to eight servos, which is pretty cool.  So it keeps them, you could stack them, but because of our wing kind of format, we want to have them laid out. So if you wanted to add a tripler feather wing, you could do that and add three feathers. So if you want to add like a prop maker feather wing or a data logger or something else with a screen or something, you could do that as well. So this is super expandable and customizable. So to power all those servos and to power the micro control of the feather, we're using the power boost 100 1000 C. This is going to give you one amp five volts out. It gives you plenty of voltage pins to work with. And it takes, this makes it so that you can use one battery to power all the servos and the feather. Normally you're supposed to have a separate power supply for just controlling the motors, the servos, but the power boost gives you enough power to power your wings and in the feather. So for the microservos, we have these high powered high torque metal gear servos. The kind of tip, the standard, I'm not standard, but some of the other servos that we've used, they use plastic gears. This one is rated for a high power and high torque. So they have metal gears and they're really robust for these type of projects that are going to have a little bit of weight to them. So this is the first time kind of working with these servos and we'll kind of talk about some of the things with it. For the battery, I am using the the 2200 milliamp lipo batteries, these kind of lipstick style batteries. I like these, they're kind of rigid. So if I drop it, it's not going to blow up like those soft pouches. So that's what we want with this battery. I also recommend this battery for like your props. So like the lightsaber kit uses it as well. So I really like this battery. And yeah, you plug that straight into the power boost and you get five volts, which is awesome. We got some other odd ends and bits like a potentiometer with a built-in on-off switch that lets you control the speed and turn on and off the power boost, which powers the whole circuit. There's a 10k resistor. We'll talk about that in the circuit diagram. Some feathers, ribbon cables, JST connectors, the whole kind of build of materials is all here. There are some screws and bits like radio ball bearings, which we do have in the shop, but there's also some other things like a stick vise, helping hands. These are all tools and stuff that Lamar has accumulated over in the shop over the years because those are things that we think will help folks. If you're new to electronics, it's always good to kind of link to to the tools that make it a little bit easier. And then here's a list of all the hardware. So you're going to need some screws and I have them all listed here and categorized per kind of module. So like the servo mounts, here's the set of screws for just the servo mounts, the battery holder, the back plate, of course the wing holder. So lots of M3 and M25 screws. Cool. So that is the overview page. Wonderful. Next up, let's talk about the circuit diagram. So circuit diagrams are put together with open source software called Fritzing. And it's a really good piece of software that lets you create these graphical wire diagrams, which you could also go down and make PCBs and it's got a lot of fun stuff. So it's open source, it's free to download. I think there's a donation now too, which is like $8 or so. But hey, Adafruit has a parts library. So that's how we put this together. Lots of our products are made as a fritzing part. So that helps folks recreate wiring diagrams and stuff. But yeah, so if you take a look at the power boost, the power boost, when you want to add a switch and on off switch to your power boost, normally the enable pin is like on by default. So when you try to use a switch, when you turn the switch on, it turns the power boost off. So Lamar devised a really clever way on kind of reversing that. So what's going on here is we have a 10k resistor on the enable and ground pin, and then the on off switch is tied to the VS pin and the enable pin. So this makes it so that when you turn, so this makes it so that the power boost is off by default. So that means when you turn it on with the switch, it turns the circuit on. Never quite done that before in a project. So this was really cool to see that because I've always had that kind of issue where if you've tried to use the on off switch with the power boost, you'll notice that it's kind of reversed. And that's by design. And hey, here's a clever way on how to reverse that. So shout out to Lamar for helping us with that one because we were originally going to do two switches. One switch to turn off the feather and another switch to turn the power boost on. But this is a really nice elegant solution. Cool. So for accessibility purposes, the wiring diagram is all broken out in text. So that's that's really nice. You can print this out as a PDF or just reference the words if you'd like as well. Very cool. So that's the circuit diagram. Yeah, I just really wanted to focus on the power boost like powering it because this is the first time I've done that. We're gonna definitely use this technique and going forward. Yes, speaking of which, I'd like to upgrade our circuit Python camera slider with this circuit because right now I got two batteries. I have this giant 12 volt pack and then like a little three volt battery just to power the power boost. So if you are if you have a similar circuit, check out the power boost for powering the whole thing. So it's a nice solution. All right, the next pages walks you through installing circuit Python onto your Feather M4 Express. These are married pages. We like to have consistency across all the guides so that when we update one circuit Python page, they kind of update across all of them. So this one has screenshots gives you links and a nice throw breakdown on how to get into the boot loader and to how to install circuit Python. It's as easy as dragging and dropping a UF2 file into the USB drive because that's the way the boot loader works. Which is pretty cool. So check that out. That's gonna hopefully be helpful for folks that haven't experimented with circuit Python yet. The code is on GitHub and here's the page. You're going to need a couple libraries, the bus device, the servo kit library and basically all of these these libraries here. So the bus device, motor, the PCA 9685 that's specific driver to the servo Featherwing, the Adafruit register for doing I2C and then the servo kit library. So those are easy to pull out of the bundle. The library bundle is a download of the zip file that you can grab from this link here and then you just kind of pick out those libraries and drop them into your lib folder in your circuit Python drive and your Feather. And then the screenshot just gives you a visual of what it looks like. So the code is on GitHub. This view right here is like in the back end. So once it's public you'll actually see the code embedded into this page and you can download it or fork it or do a pull request for it if you'd like to upgrade to it or something. And then so that so that'll be there once it's public. Right now I'm in the back end and calibrating your wings. This walks you through kind of making sure that your servos are where you want them to be. So if you're setting up a different set of wings or a different appendage you're going to want to walk through this and kind of walk through the calibrating your wings because the servos they have a minimum and maximum servo like range of degrees. So you'll want to play with that and this one walks you through all the bits that you can use. All right cool. All right next page is 3D printing. So I have a all the STL files can be downloaded they're they're kind of oriented to print as is. And what's really cool is they don't require any support material. So you can print a whole a whole kit on a on your bed or you can print them out individually or you can send the files out to be printed by a friend or a service. So that's all fair game and if you'd like to make modifications to the model the source file is in step format so that'll work across all of the CAD packages. So like solid works or Fusion 360 you can use the step file for any of those. All right and then here's a list of all the parts. So not too many of them but there they are. A quick look at the slice settings. This is how I kind of oriented them so if you want to print your whole kit you'll reference this image to kind of orient your parts. Yeah none of them require support so just great. The back plate requires a minimum bed volume of 165 by 135. I thought and people have asked me before like how can I print this and it's always good to have like here's the minimum for the biggest part. There you go. And then I have some CAD explosions that are our visual way to see how all the screws and bits are fitted. They're not going to play in our back end because that's the way gifts are handled but they look really cool and I think they're a good visual way to see how all the screws are fitted. I think I could just hit preview. I was going to say I just go in the preview. So I've been posting all the code for this and even a sneak peek at the video because it is on the stood. Check that out. Well be sure to check it out when the guides live because I have the auto plate disabled for Safari to help minimize you know lag because I sure have a lot of it here on my computer. So I can't run those those CAD animations but hey I know they're there. Just know that they're there and they're a visual way to kind of see how the assembly is. Yeah all right. The next set of pages is really thorough. It really breaks down installing every screw and that's going to be really great for folks that need that visual step by step on like installing every screw and it really is a chronic like you have to do it in this order. So I made sure that the order is chronological and digestible because I could have had one page that's just like infinite but I figured let's break it up into modules. So we have the servo assembly that just walks through installing the servo into their servo mounts. They are secured with these two M25 by eight millimeter screws. Ball bearings are just press fitted into the holder. You want to do that first. I'm out of order here but it's that simple to get fastened into these little brackets here and then I'm using a lot of lock nuts that are press fitted into the servo arm so that they have that nylon insert so they have a really good grip into them and they're not going to unfasten during the use during movement. So yeah I walked through all of that and then so the servo horns that are stock with the servos I really recommend if you're ever doing a some sort of attachment for your servo I really recommend like modeling around the servo horn. I've tried two 3d print servo horns before you can do it it works but I think for the best like stability wise and like the most best tolerances you're going to want to at least I recommend sticking with the stock servo horn and sticking with that because it has the splines that are really press fitted into the shaft of the servo and you're not going to get that grinding and stuff and I think PLA is maybe not the strongest material and even resin and let's say centered nylon might not be as strong as this stuff here as the stock servo. Yeah and it comes with a ton of little mounting holes and stuff and you can use the built in screws to attach the servo horn into the servo arm. It has a cavity designed to fit the servo horn so you just press fitted in there and then attach that screw on the top and then it's super secure that way. All right so the next pieces are like installing a little pin for the bearing so that that can be attached to the servo arm. Yeah and then this one you definitely want to calibrate it so this is where like you want to plug in your servos and test out where the rotation is like where the degrees of the rotation are and you can do that by using like a little flag. I just fashioned one out of painter's tape so that way you can see like all right if I mount my servo arm here in this position this is how much range I get so definitely want to do that before you start fitting your wings so I made sure to have this here for the hardware sake and then in the code it even shows you hey you want to do that there too calibrating it. I think that's a really important thing there. Yeah and then once you have that position figured out then you can install the servo horn onto the servo and then fasten the screw with that pin so it's counter balanced with the with the with the ball bearing. Yeah so that's how you set up your servos. The next one talks about the wing panels. So the wing panels is the process of using a vinyl cutter and a laminating machine and a couple of different layers of aerodescence to create a fairy style wing. So if you're really into the fairy wings and and you and you want to recreate the fairy wings Erin has SVG files that can be laser cut they can be vinyl cut water jets and of course 3d printed if you have a big 3d printer these are designed to fit on a I suppose a 12 by 12 is it 12 by 24 inch the longer style so yeah 12 by 24 inch sticky mat for a Cree cut machine of course you can use another vinyl cutting machine this is just the one that Erin used. It looks like she's using the purple one which I think is for fabric which gives it like a light stick so it should be pretty easy to remove those once it is cut off. I think I used like the blue one but any of those should work as long as the adhesion is or she shows there having the tape around them so it is nice and steady as the blade cuts around and she's using a thicker material what is it a crystal board I think it was you get these at I think I picked it up at Joanne's fabric or Michaels I believe has a couple of different sizes as well and you're going to need the blade for the Cricut so she's using the Cricut Maker and that has the ability to have these these much longer blades like knife blades that will be able to cut through that thicker material. Yeah let's step back a bit there's a list of materials here that I'm seeing so there it is yeah crystal board, chipboard or crystal board so you can experiment with different thick materials. Chipboard is something we've used a lot of 16 gauge wire for support that's another set of materials that I didn't think about. I should be in the jewelry section of your craft store. All right iridescent silphane or gift wrapped. This one specifically I don't think she linked it there but we got it from a company called Nashville Raps and they have the iridescent like wrap that we're using on that which we can actually show right here on the overhead very beautiful iridescent type color which I've only found them to carry. Yeah okay so this was kind of hard to find one of the only tougher to source materials and they ship in about like a week or so and it comes in a nice big roll so you can have a lot of practice with these or use them for what they're intended for wrapping gifts and things like that. Nice is what these are. Yeah definitely a great way to make this membrane for these fairy wings. Yeah back over to the guide you can see that we've got a whole list there of the stuff. We've got some links here to the tools. You can spray paint your wings and then we're down to the zip fire of the SVG so these these wings are yeah so actually forgot that I used the glitter rose gold spray paint on here you can kind of tell the nice little glittery on there to make it the fairy look and then I'm using the iron the creak cut iron to just iron this together to have make a sandwich out of the Bristol board that is in the middle here and then inside of the SVG files you'll find the spacing for the mounting holes you could of course just you know directly cut those yeah we'll show you in a second here on how you can fashion how you would attach them to the servo so let's kind of wrap up the learn guide and and I get through it so yep we got the SVG files and this will just walk you through cutting it and setting it up in the software for the creak cut so you can use that and then this walks you through the construction so once your your wing has been cut out of your thick material then you transfer it on to this this transfer paper oh I didn't do any of these steps yeah hey so you can construct the wings however you'd like this is just showing how I did it yeah so different techniques it's always cool paper you use a laminator or you can use like a I'm gonna guess the iron like for your clothes might work but I use like the creak cut the easy press yeah it's just a giant flat surface um iron for clothes yeah and then here's some uh the wiring supports so setting that up oh you actually need to do this probably first the wire okay okay so that's a little out of order but yeah uh definitely do that first and then do the oh yeah you see the iron the wires okay yeah it's a little out of order huh okay we can rearrange it and stuff this is why the guys so yes there's some fishing line that you can use to attach it and and then attaching to the back plate once it's all set up which I guess I'll do a demo of and then you can decorate the whole backpack you can adorn other things in it to kind of cover up the the 3d printed parts so that it looks like um you know it so it looks more uh less mechatronic more however you like yeah so she went with the steampunk look yeah we kind of like the open look looks a little bit more gothy and like tronic tron gothy I don't know what the uh I mean yeah I just have a bear because like I'm not gonna uh dress it up like I'm gonna leave it so it doesn't demystify because once you've dressed up you can't tell how it kind of works so that's kind of why I left it bare bones like that but uh we're almost through so that's the construction of the wings this particularly the fairy wings right and then uh everything else um after that it's still like all right here's setting up the feathers so just setting up the low profile headers onto the doubler feather wing the next page shows like installing the headers and the little connector base you got a screw block terminal and a three by three header pin set so that it's easy to connect uh servos right on top instead of having to wire it in you can disconnect them easily as well feather headers are setting it up um with your feather headers they come with the feathers wiring up the pot switch uh so the pot switch it has a switch built into the potentiometer so you can turn off and on the power boost and then the potential is used for adjusting the speed I figured to have these set up to a set of jst cables so that it's easy to disconnect them I feel that that's a good thing to have because if you just have this super long wire and it connects to your circuit and then maybe your wire is not long enough it can be a little bit of a back and forward so that's why I really recommend using jst connectors when it comes to the power boost we got that 10k resistor that gets started into the ground pin and the enable pin that'll reverse kind of the polarity or at least the the way the enable is on by default it'll make it so that it's off by default and then you can wire in your your two wires from your switch to the vs pin in the enable pin you're gonna have to share the enable pin because it's also being shared with that resistor that's uh that's how you set it up there you can see here I'm using those uh that jst um cable there okay and then setting up the doubler like wiring that up I really like using the featherwing doubler tripler any of the featherwing atom boards because they give you extra pins in this case I'm actually soldering um the voltage and ground uh into the voltage ground pins on the uh on the doubler so that way I'm not soldering directly to the feather so that means the feather can just come out and all of the wiring is fed as fitted on the doubler and not the feather so that's really uh smart and then uh you're using these screwblock terminals um for fitting in those wires from the power boost the voltage and ground from the power boost so that's how the servo is getting power from the five volt pin in the ground pin from the power boost yeah so uh all the wired connections are fitting into the uh into the doubler even the potentiometer so the potentiometer has three wires power uh I mean voltage and ground and then a signal using the a0 pin but you can switch it up if you'd like and then I'm using the three pin jst connector so you can disconnect the potentiometer all right so the battery connects directly into the power boost it has a little jst port that's fitted there and then uh then you can use the on off switch to turn it on and off and there you go and that is most of the wiring really battery holder gets installed with a couple of lock nuts and they if it's fitted onto that back plate and then the back plate we're gonna attach the two servo um mounts to the back plate they have these holes you can use uh long screws and some hex nuts to secure them in place you can reference the image for the you know the placement of how they are mirrored and then the pcb has some standoffs that you'll want to use you can play around with different lengths of standoffs if you want a lower profile or thicker profile you can change up the length of the uh you know of the standoffs we got a nice m25 standoff kit as well that I recommend and I have linked um and then securing the pcb mount uh the the power boost to the pcb mount with some screws that's actually underneath the um I positioned I mounted the power boost under the doubler featherwing so that everything is like kind of nicely kind of stacked on top so I think that's a a nice way to keep it not hidden but like you know underneath it's still accessible you can still of course recharge the battery with that usb port that's what the c is in the power boost 1000 c that means you can charge your battery all right so fitting that over um a couple steps here because of the way the um because of the way the pcb mount is you kind of have to install a screw that goes through the back plate through the pcb mount and then you can twist on the standoffs over the uh the thread of the screw so once it's installed then you can install the battery install your feathers um connect the the servos on top it's easy to connect them they just plug in the pins are listed on the servo featherwing pcb so you'll know exactly you know the right way to plug it in because the pins are labeled which is great and then uh we got the battery it slides into that battery clip it's got a nice uh fit on there and then connect the switch super easy because you just plug in the jc connectors and and there you go that's that's uh that's kind of the the build in a nutshell um you know at this point i don't have my wings so you want to put your wings at that point um and then there's a page here on wearing them just some things like um some extra bits like you can mount it to like a wristband or integrated into your garment or something so that's what erin did here with her her pot switch she integrated into like this this uh this bracelet yeah pretty cool and there's some more bits here on like wearing them and maintaining them feeding them making sure they're well fed how to walk through a door frame with them how to sit down with them yeah all the all the usage bits right cool so let me show you how quick it is to swap out these wings right so i just took them off the model here and we're gonna get them down here so i have these screws here and i would really like wing nuts because come on right wing nuts would really work well here i'm just saying okay so you got these two screws they're rather lengthy they're about 15 millimeters long and they are fitted so that they um have a they just fit in there's no threading here what you want is your wing nut to uh to have a nice nylon insert so that it has a real lock connection but once those two screws are out this slides out so you want to be aware of the thickness here it's about four millimeters thick but you could you could probably fit five millimeters into here um so this is the 3d printed wing it's more of a more of a bird wing um but you see here i added a little bit of thickness here um so that it would uh have a little bit more fitting in there um but yeah so if you want to add the ferry wing where did you there it is so let's say um you didn't have holes well all you would have to do is fit this in here and then you can mark it or use a drill to just drill right here and uh you do have a metal wire or no your metal wire is like right here right so Peter didn't use the metal gauge wire and um we were able to poke these holes out and you can see here i actually updated the hole so i just made a new one there super easy to do so um so you fit it in there like that line up your holes and then get it going right you fit your screw in there just punch it through go through the other side and then you got your your wing nuts that you can secure here if you had a you know something different maybe fabric you could try sewing it uh to these wing holders but that's how simple it is to swap out the wing i do have a set of dragon wings that i'd like to share look at that one one wing is a butterfly and the other one is a Lucifer wings what a great mix so that's how you can do that um talk about the back plate real quick uh the back plate uh can there's a there's a lot of stuff you could do to improve it to um to make it more wearable right now it's it's pretty it's pretty bare bones i don't have any padding or anything like that so this could easily be reworked um as a textile with layered um padding so that when you're wearing it uh it feels good but notice that the screw heads are right here if these were on the opposite you'd have the thread of the screw and this would be touching your back so you want to make sure that your your your head and your screws are on are all here because this is what's going to touch your back right and then of course like i said might want to add some padding i've only worn them for a little bit so i don't know if they if they hurt or whatever but another cool thing is that these uh these servo uh holders are slotted so that means it's you got a lot of options for mounting it's not specific um you know mounting so if you wanted to sew this to a garment those uh that's easy to do so um if i had a screwdriver i would probably take this off and show you just the the mount itself um but we're gonna we're gonna skip that because uh the camera kind of in the way and yeah i don't have a screwdriver right now but it'd be cool to take it apart um yeah so we got these straps here that are built into the back plate so you can use these little loops here to install your elastic strap and then the wiring can be you know reworked it can be uh if you wanted a lower profile you see how these stick out if you wanted a more permanent solution then you would wire these directly into the pins and maybe even skip the headers because they're they're they're a bit lengthy so if you really wanted to be small as possible you could you could even not use um uh the socket headers and just solder directly into the double or feathering that means you have a really low profile um so maybe if you want that there's just lots of different ways you can you can wire it up do we make a right angled uh connections for those or headers for uh for these guys i don't i don't think so yeah i don't think so i guess we're really wanting to have easy axles like that you could uh bend them yourself yep so there's like a little rig or something that you could print and uh this cable uh could with some more effort more work we could uh integrate this into one of the straps so um if if uh if folks want to inter you know make it more hidden there's there's some options there we didn't do that because it's outside of our kind of skill set but i think that can totally work where folks would like integrate the wiring into the garment into the elastic bands and make it maybe more into a vest or some sort of backpack or something but yeah um definitely for c folks uh fashioning their own backplate because this one's very specific to i guess this design but um with the the servo mount itself like it can be added to anything so if you need your your wings further spread apart um you can uh fashion your own backplate i stuck with this design because it's uh kind of prints in less amount of time and you can laser cut this as well but yeah it's all three different right cool i think that's the things i wanted to cover let me take a quick look at my project notes yeah the next one i want to talk about is um what happens when you have a completely different set of wings and just watch where you step so i purchased these these wings from amazon and they are made out of uh foam tpu foam and they have a super awesome look to them they're these dragon wings so here's what it looks like to design a custom bracket for it it's very similar to the wing but it's it's it's thicker right so i have this kind of um u shape here that kind of cups over um this piece of the wing and then there's these giant um holes here i used a a needle to thread this here ribbon and then i just knotted it there so uh that's how it's secured but you'll notice that this is attached to the servo arm and the servo arm has the uh well the servo horn built into it so i found like if it's it's easier to just rework this whole piece instead of like because you don't have access to the screw head once your wing is installed so you can't kind of take these apart unless you take this apart um so that's why i haven't set up this way so if you want to fashion uh you you can create your own wing holder that attaches to the servo arm just using those those mounting holes here down here and uh that's uh that's how you can attach a bigger set of wings different sized wings um and these are uh i forget how much they weigh but they're light they're uh they're lightweight i haven't installed them because i figured the other wings work well because they're they're more you know doable i think because you can actually make them these are just bought but hey if you bought your set of wings from somewhere else and you need to fashion them um there's another option for mounting a bigger set of wings yeah and i just left these uh these servo horns on there maybe for show and tell i'll put them on but yeah they're a little bit more weighed so uh you may or or may not have uh a bit of a a jerk when when it's like flapping but you just turn the speed down and it and i won't uh you won't fly away hopefully there you go so those are the bat wings lots of detail on them too really really good set of wings they're about 30 on amazon but there's lots of different wings that you could purchase from amazon and uh you want to make sure that the wings are are like that separatable because i i did look at some wings like some angel wings that have actual feathers like built out of feathers that's like one it's just like one wing and it's like you have to do more work to separate them so if you could find a set of wings that already have them separated like i did go with that and here's the 3d printed wing um i also have a set of bat wings and things uh it's in the other room there's a couple yeah so there's a couple of different cab designs that you made for these that you can try out yourself i got a question on the servo how long are the servos i think you're asking for the dimensions of them i can give you the yeah there's a 3d model as well of the uh of the servo that i'll release along with the with the learn guide so that folks can create a very accurate model um around the uh around the the servo and um let's go ahead and take a look here just posted the link to the servo and it should have all of the dimensions and the text details on all the text sheet yeah but if you just wait you know a little bit i can i can toss you the model and then you can uh that that has everything there and it's like been tested because i 3d printed the parts but yeah it comes with a couple of different servo horns and a couple of different screws it's already pre-wired and ready to go here it is side by side next to kind of your standard mg990s servo it's a little bit taller and the mounting holes are certainly different like i found that out that the mounting holes are very specific to this model servo and uh only the servo but uh yeah cool so i'm trying to post the link to the fusion file of the model but of course fusion decided to crash yeah yeah it's it's gonna do that like i said i have the files i just we need to get the learn guide published so that'll happen at some point it doesn't look like there's a uh like a technical drawing so i did do a you know manual calipers measurement but i have thoroughly tested it it's pretty accurate you know what i think i grabbed the data sheet from the company's website like plan tower parot i think i went yeah i did a little bit of digging to find that but yeah oh you're saying not how long how strong well it's in the link that i sent you so i'm just pasted in there yeah i mean there's there's different ways so the stall torque i suppose is one way to say it and then there's also the orientation that you have this out so if you have it laying down it's gonna be less and if you have it vertical so yeah you know yeah yeah that's a tricky one but cool yeah another tip yeah check out the um the website there the manufacturer's website tower pro and they'll give you more of a data sheet i think yep and then of course you don't really know until you actually test it out yeah you're gonna have to yeah we uh we had to just test it yes cool all right um let me revert back to my notes again see if i covered everything because i almost missed the the dragon wing thing yeah so this is an expandable project right so if folks want to uh maybe you want to control your your fair wings with uh blue tooth well you just pop it out that's awesome so now if i had a blue fruit feather i could pop that in and then make sure that the code is updated uh so that it it has the libraries in code for it but yeah super easy to swap it out because all the wiring is done to the doubler not the feather so it is modular in that sense there we go and then around the discord that uh alvaro saying that uh he's got a nice little backpack for his dog panda to work nice for having a servo winged pooch that is amazing and we got some gefs in here posted by yanni of a corgi with his wings on it looks like he's flying as he jumps onto the couch adorable that is super adorbs and if you're not on the discord go ahead and jump on that i have links to all of the parts all of the cad the fritzing the youtube video if you want to get a sneak peek at that and a bunch of the links straight from the guide you want to get started on your own fairy wings or should i just say feather wings right i wish i could up there goes this plane now wow right it looks like they're flapping and all that is super cool yeah not cool so no excuse not to have any wing powered costumes for halloween and going forward when cons get back yeah i love to see folks in the cosplay community really make this theirs um so fashioning their own backpack is just one piece of i think something bigger um adding sensors to it so that it's uh interactive you know driven with with uh some sort of sensor input would be really cool as well adding lights to the wings which is actually something i want to do i mean lamar when i first saw it i was just like what this is amazing i hadn't seen um el edge lit you know on the edge of the wings yeah um we we've seen stuff from disney and tinker bell and and they're they don't look as good as that you know yeah there's always like one or two leds and that's it yeah the back plate is actually a lot more bigger than this i think it was like 30 bulkier and heavier and nice bulky a set of acrylic wings they look cool but they don't move they don't have a late diffusion as even as you'd like them and there's just a ton more that can be added to them yeah so so yeah lots of room for improvements and stuff and that's just two servos we still have all of these channels to work with so you want ears you want a tail or maybe you want six wings or something you know or legs yeah all right that's uh i think that's a wrap for the project then then day 020 is asking are they able to flap yes we have video of that we'll post of the dragon wings being driven by them they do not flap no they flap i'm actually surprised at how the force that they have um yeah you uh so think you can pinch your fingers it'll slap you in the face that sort of thing it really shows how different your wings placement are right you had the the code that you start off with that you can just see how much power it has when it moves it up and down with the dragon wings attached yep and then the code you can adjust the speed um and of course the rotation so if you want more more flap or something there you go i was just going to swap out the uh the black wing here for the other one so they're not i really do need to get some m3 wing nuts like i really do that would make this so much easier um so another tip i guess is to not uh mishandle your servo a lot like i am you could potentially uh strip it so i i do have to kind of give you that that caution um i'm just doing this for the sake of just doing it really i know folks are i have to sacrifice this uh remember i said it made me holes right just to show how fast this can be updated there you go we won't even need the nuts forget it all right here we go f e yeah so now that looks much more consistent with the two two wings there so by default um it'll rest in this position so that you can go through doors right you can go through a doorway if your wings are super super long that's going to be really important but we made these wings to be a little bit shorter so that you can pass through a doorway even when they're open but yeah the uh the pauses are randomized there's a minimum and maximum value that you can adjust so if you want them to stay closed longer or shorter you just change the value and if you don't want it to be random well you can do that as well look how it looks cool on the on the leds there good nice yeah so you have some lights in there yeah have some really nice diffusion on that which erin does have a project that has the iridescent film on some crystals gives it a really nice diffusion effect so really cool on the wings and we got uh some links here to the backpack that he's going to use on these this is a really cool backpack for dogs to carry things yeah mm-hmm we'll definitely fit on uh fit on this like on the top here really cool oh wow that's cool it's like for hiking right so i got this wire dangling but like i said you can you can you can fashion the wire a little bit different yeah and past uh past three hangouts we showed the little um handheld rocker switch uh enclosure um so you could definitely model something at like that it would fit into the potentiometer you can have like some of that clips to the side yeah i think folks that have their costume they really need to fashion their own exactly way to do it so we really didn't like spend that much time on on the switch um it's really cool to see erin how she integrated into her into her wrist steam it out into your costume yeah but these are just your basic um elastic straps uh we have a roll of them that we got from aida box so if you got your aida box and you got your costume goggles uh you can use the straps there yeah i think the only other thing they would need would be the little end pieces to pinch the uh will you cut the little ends of that to hold them in place yeah i think uh when it comes to size you know you're limited to your printer's bed or whatever so don't feel like oh those are too small you can make it bigger draw these out by hand on a piece of uh i think erin did a great job on like showing the scale like putting two wings together to create more of a of a wing that has two layers to it so all right cool so you don't even see them they're like they just kind of pop out that's the cool effect of it yeah and again the backpack can be remixed so if you want to spread your wings out more you can uh you can do that you can you can tash them to anything yeah so all right cool i think that's going to do it for this whole episode since it's uh five minutes still oh wow it was the whole fairies guide oh wow we'll have a completely packed show next week yeah so there's a bunch of other things we're prototyping there's a bunch of uh more servo based projects maybe pico all that cool stuff coming up go ahead and fly into later tonight stay tuned yeah i'm really excited folks i hope everybody's doing well i really want to see you guys on uh wind today later tonight on ask engineer on show and tell we're not hosting this week lamar and fielder back it was super fun hosting the other weeks but uh we hope to see you still there we'll be on there maybe we'll show something else don't forget though tomorrow is jump park's workshop it starts at four p.m eastern time check in with john say what's up and then on fridays we got deep dive with scott so be sure to check in with scott on fridays let's get on back over to uh yeah just a quick goodbye a quick note from bruce to check out walmart they have the um just check in the sewing section they have a lot of those parts he's saying for about 60 off oh that's great that's a great tip yeah and whatever you have on hand right whatever you have on hand do you got some any equivalents will work or should work yeah all right some time looking at all the wings on amazon you know which one i'm just not going to take this off no just like erin said it well this was super fun folks um hope to see you tonight i'm running out of things to say that's it all right we're gonna say goodbye now we're gonna leave you with uh your moment of fail this week's fail is brought to you by what was this i think it was like a base plate for a thermostat i actually got a different one oh this one hurts a little bit more all right oh yeah so here's the tip when you are finished with your print you don't want to take it off the bed like this this is why the bed flexes i know so right there i split the part seven hours you delaminate it i broke my part because i just thought it'd be cool to film it with one hand nope you got to uh flex the plate the filament isn't that bad it's just that is not how to take it off the bed so learn from my mistakes folks we'll see you tonight good luck bye okay one guys


Hi, I'm Christine Volker, and I am absolutely, positively, 100% a door hardware nerd. I am the lead engineer for the board lock and cylinders platforms for AEHG Engineering, for the brands Corbin Russwin, Sargent, and Yale. I think what makes me a door hardware nerd is, number one, I'm an engineer, so that automatically makes me a nerd. And number two, I can't go through a door anywhere, no matter who I'm with, without stopping and looking at the hardware. And for them, whoever I'm with, it's pretty annoying. Well, I've been with Asa Aboli for 16 years now, and I think I became a door hardware nerd the day I started. And I think over the years, it's probably just gotten progressively worse. I think the nerdiest thing I've done as a door hardware nerd is probably when I went to the hospital to visit my mom after her knee replacement surgery. Of course, the first thing I did was check and make sure that she was okay. But I couldn't help noticing that on the door was a Corbin Russwin HP 3000 paddle trim lock. So after making sure she was okay, you know I went over there and looked at the lock and played with it and took some pictures of it. And when the nurse came in to check on my mom to make sure that she was okay, and of course I had to ask her a bunch of questions if she liked it, does it work good, any feedback. And she looked at me like I was crazy. I think for anybody out there who's not yet a door hardware nerd, I'm here to tell you that it's okay. If you love door hardware as much as I do, and you stop and look at it every time you walk through a door, and you've done crazy things when you go places and ask people questions about the hardware on the door, I think it's okay.  Enjoying the rest of us. I'm Christine Volker, and I'm proud to be a door hardware nerd. Thank you.


Hi Everyone! In this lesson, we are going to learn how to access list elements in Python by using positive and negative index values. First, let's make a list. E.g., myList. Equals and will put elements A, B, C, D. In python index numbers starts from zero. So element A has index zero, B has index one, C has index two and D has index three. If we want to access the first element in the list, we'll type my list of zero. So we'll say my list of zero because first element in our list has index zero. When we press enter, we can see that first element is being returned. Similarly, if we want to get third element from that list, we'll type my list two. Because third element has index two in our list. Unlike to a lot of other programming languages, python can access the list relative to each end. Positive index values count from left to right. And negative index values count from right to left. Starting index of negative value is minus one. So if we want to go in opposite direction from right to left, we can see that our list, I will copy it. We can see that our list, if we go in opposite direction, our list elements has negative indexes. Element D has index minus one, element C has index minus two, element B has index minus three and element A has index minus four. So if we want to access our elements from right to left, we can do that by using negative indexes. So if we want to get last element from the list, we can use negative index numbers and we can type my list of minus one. We'll say my list of minus one and we'll get last element from our list. Also if we want to get third element from right to left in the list, we'll type my list of minus three and we'll get third element counting from right to left. So Python allows us to use positive and negative integer numbers as indexes to our list and we can easily access to any element in the list by using positive or negative index values. That's all in this lesson. Thanks for watching. Happy coding.