Here’s a project that uses our Capacative Trackpad a wearable multi-touch control. The project comes from zackfreedman via Instructables. See more:
Under the hood, this is just an Adafruit PS/2 Trackpad in a custom 3D-printed shell. I like this trackpad because it has built-in multitouch, gesture detection, and can return trackpad-style (delta) and tablet-style (absolute) coordinates. Its enclosure is also invitingly flimsy, almost as if Ladyada wanted us to pull out the electronics and put them in a custom enclosure…
The trackpad is PS/2, which is really easy to use with Arduino. This can be used for BeagleBone, RasPi, etc, but you will need a PS/2-to-USB adapter.