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Build Instructions, Page 2 / 6


Step 2: 1k ohm resistors

Resistors are easy to solder, so start with these 1k ohm resistors. They are marked with Brown-Black-Red colored bands. Bend the leads so the resistors fit into the marked locations in the upper-left side of the board. Resistors are not polarized, so they don’t have to go in a certain way. To solder things with long legs like this, you can turn the board over and bend the legs a little bit, so the component doesn’t fall out while the board is upside-down.

Bend leads to keep the resistors from falling outLocation of 1k ohm resistors

Use your soldering iron to heat up one leg of the first resistor and the ring around the hole at the same time. Push a little bit of solder on the ring. The solder should melt and flow around the hole. If you’re having trouble, make sure the tip of your iron is tinned and shiny. Remember to heat up the pad and the pin, and you don’t need to apply a lot of solder. Don’t try to use the iron like a paintbrush. Use the diagonal clippers to trim the legs of the resistors, down to just above the solder joints.

Trim leads with diagonal cuttersSolder leads onto circuit board

Step 3: 470 ohm resistors

Take one of the three 470 ohm resistors and bend down one lead back on itself, as shown in the first photo. Turn the board back over and put this resistor in its proper location, near the bottom-left part of the board. Again, resistors are not polarized, so direction doesn’t matter.

Location of R1Bend resistor

Add the other two 470 ohm resistors near the first two 1k ohm resistors.

Bend LeadsLocation of other resistors