A simple example of how you can simulate keyboard actions with a leonardo board, using a nunchuck as gaming or input peripheral.
This should work with all 32u4 and SAMD based boards (Leonardo, Esplora, Zero, Due and MKR Family).
We use a WiiChuck adaptor and this is how we connect it to the board :
| WiiChuck connector | Arduino pin |
|---|---|
| - | GND |
| + | 3V3 |
| d (SDA) | D2 |
| c (SCL) | D3 |
Thanks to @todbot who did the hardest part!