Quantity   Component name
1 × Adafruit RP2040 Prop-Maker Feather <a target="_blank" rel="noopener noreferrer" href="https://www.adafruit.com/product/5768">https://www.adafruit.com/product/5768</a>
2 × Adafruit TCA8418 Keypad Matrix <a target="_blank" rel="noopener noreferrer" href="https://www.adafruit.com/product/4918">https://www.adafruit.com/product/4918</a>
1 × Speaker, 4 ohm, 3 watt <a target="_blank" rel="noopener noreferrer" href="https://www.adafruit.com/product/3968">https://www.adafruit.com/product/3968</a>
1 × Adafruit USB Type C Breakout Board <a target="_blank" rel="noopener noreferrer" href="https://www.adafruit.com/product/3968">https://www.adafruit.com/product/3968</a>
1 × TLV62569 3.3V Buck Converter <a target="_blank" rel="noopener noreferrer" href="https://www.adafruit.com/product/4711">https://www.adafruit.com/product/4711</a>
1 × Battery Holder AA 3 cell
1 × Light pipe <a target="_blank" rel="noopener noreferrer" href="https://www.digikey.com/en/products/detail/dialight/51513020700F/4965195">https://www.digikey.com/en/products/detail/dialight/51513020700F/4965195</a>
20 × Custom PCBs Snap-dome assembly
160 × Snap Dome buttons, 20 mm <a target="_blank" rel="noopener noreferrer" href="https://www.snaptron.com/products/standard-domes/f-series/">https://www.snaptron.com/products/standard-domes/f-series/</a>