Circuit Playground Express has a built-in microphone, but we'll need to mount it away from the Switch's speakers in order to see our lighting effects. Let's use a separate mic that we can mount close to the Switch's speaker - then use wires to connect it to the Circuit Playground Express.
- Cut three pieces of wire - each about 30cm long, one in blue, one in white, and one in red.
- Strip about 7mm of shielding from both ends of each wire.
- Tin each exposed end with solder.
Solder wires to the Circuit Playground Express
Now we'll connect those wires to the Circuit Playground's contacts. Each wire color connects to a specific contact pad:
- Red wire connects to 3.3V
- Blue wire connects to GND
- White wire connects to A7
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Poke each tinned wire lead through its corresponding contact pad, bend the wire around the outside of the pad to keep it in place - and then solder it securely.
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At this point, you can loosely braid the wires in order to keep them grouped neatly together. This is optional :)
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Solder Wires to the Electret Microphone Amplifier
Next, we'll connect our wiring to the Microphone board. Each wire color connects to a specific pad on the Microphone board. Poke each wire through its respective pad and solder in place:
- Red wire connects to V+
- Blue wire connects to GND
- White wire connects to Out
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Once each wire is soldered to the board, clip any excess leads off to avoid accidental bridginf between the pads.
That's all for soldering and wiring - now we can move on to programming the board.
