Matt Hawkins from Raspberry Pi Spy has done the leg-work enabling Pi users to use a Wii controller – along with a Bluetooth USB dongle to send inputs to the Raspberry Pi. It uses a Python library called “CWiid” (I imagine this is pronounced “seaweed”).
This is awesome because the Wii controller has 11 different digital inputs. When you consider combinations of inputs, that gives you a lot of extra possible “input commands” to play with.
Theoretically*, with 11 buttons, there are 55 different 2-button combinations (11C2). That should be enough for most uses. If you need more than that, you could use 3-button combos.
Here’s a little video of some Wiimote controlled Gertboard madness
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