This diagram shows how the circuit will be laid out. The RGB LED and on/off switch will be connected to the Prop-Maker Wing using header pins and shrouded ("DuPont") connectors. We'll have the Prop-Maker Wing plugged into the Feather M0 Bluefruit, and the battery plugged into the Feather.

Feather Headers

To keep a low profile when fitting the electronics into our MUNNY figure, we'll use low-profile headers to connect the Prop-Maker Wing to the Feather M0 Bluefruit board.

Start by soldering the female headers to the Feather and the male headers to the Prop-Maker Wing as shown below.

3W LED Wiring

We'll use a set of four jumper wires to connect the LED to the board. The Prop-Maker Wing has a common anode RGB LED driver (triple MOSFET action!) and four breakout pads. We'll connect right-angle header pins to the board, and use a single-row wire housing on female jumper wires to make the connect to the LED.

Start by connecting the four wires as shown into the housing. I'm using:

• yellow for + voltage
• orange for R
• green for G
• blue for B

The wire crimp connectors click satisfyingly into place! Note how the yellow wire is routed to the far left.

Trim, strip, and tin the other end of the wires as shown in preparation for soldering to the LED.

Next, tin the four pads on the LED and then solder the wires to the corresponding pads.

LED Headers

Snap off a 4-pin section of right-angled header pins. To get a good placement, insert them into the LED cable housing, fit them onto the Prop-Maker Wing, and tape it in place.

Flip the board over and solder the four pins in place.

On / Off Switch Header

We'll use this same technique to make a low profile connection for the On / Off switch to the En(able) and GND pins on the Prop-Maker Wing. We'll connect these to the underside of the board.

Button Wiring

The toggle switch is a SPDT (single pole, dual throw) which means we can connect one wire to the center terminal and the other to either outside terminal. Cut, strip, and tin the two wires, then add some heat shrink tubing (optional), and solder the wires to the switch as shown.

Plug and Play

You can now plug in the LED cable and on/off switch to the Prop-Maker Wing, and then fit it onto the Feather M0 Bluefruit board.

Next, let's program the Feather!