This sexy cyberpunk wristband puts a versatile trackpad on your arm, for the ultimate multi-touch control for your cybernetic augmentations. It's stable, comfortable, easy to assemble, hack-friendly, and looks ridiculously cool.
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. I won't help you troubleshoot connections and I will make fun of you if you ask.
This project involves 3D-printed parts. If you don't have access to a 3D printer, get in touch with me to buy pre-printed parts and learn how to make cooler friends who have 3D printers.
Most importantly, this project is complete. I will not add any features or improve the design. I will fix bugs if you find them, or clarify things in the instructions if you tell me, but that's it! You're welcome to fork the design, but read The Serious Part first.
The Serious Part: The 3D model is my [Zack Freedman's] property, released under Creative Commons Attribution-NonCommercial-ShareAlike 4.0. You can remix, redistribute, and share the model, as well as its derivatives like the pre-processed STL files, as long as you include my full name (Zack Freedman) and license it under Creative Commons Attribution-NonCommercial-ShareAlike 4.0.
You are not permitted to sell this model or stuff produced with this model (because I'm selling prints of the model!) If you make a substantial improvement to it, get in touch and I will give you a nontransferable commercial license so you can sell it. If you think you can run off prints and sell them, I will hunt you down and serve you a rather impressive-looking legal document.
You can buy a bag of screws and a bag of nuts from RadioShack, which will give you lots of little screws for lots of projects. The iKen bands are great for wrist-mounted wearables, and their 50mil sizing is really easy to model around.