- Circuit Playground Express Firmata / Examples: https://github.com/adafruit/CircuitPlaygroundFirmata/
- Zelda Chest Tone for Arduino: https://github.com/witnessmenow/attiny85-zelda-chest (originally from https://gist.github.com/ianklatzco/9127560)
- Zelda Song Player for Arduino: https://github.com/mitomon/MitosArduinoScripts/tree/master/zeldaSongPlayer