Haven opened up hi controller, removed the accessory port mechanism, and found there was just enough space to fit a Teensy-LC. He then hacked up an old USB phone cable that matched the controller and wired it up to the Teensy. Then he connected the controller to the Teensy along with a couple of 4.7k pull-up resistors for the I2C pins. The code for the project can be found on GitHub.
Forum user sevEnil2 (Severin N), together with his brother, built an LED table with bubble wall. Not only does this table feature LEDs wtih and infinity mirror, it also has aquarium tanks on all 4 sides. The use of the CD drive to house the controls is one of the many cool features of this project.
The pair undertook the project to learn about micro controller programming, woodworking, and custom tank making. They found a lot of help with their projects from on-line communities. You can follow the discussions about the development on this forum thread and this one well. There is also this Google + conversation to check out.
After searching for an electronic door lock, and not being satisfied by what he found, Elmue decided to build his own. The design features a powerful battery back up, an easy to use interface, the ability to store up to 64 users, and it mounts inside the door so it’s not visible from outside or exposed to the elements.
This video shows the controller in action at the Rome MakerFaire.
Mick needed a simple and effective instrument to create drum beats without having to manually write them note by note. He wanted something more than most of the DIY MIDI controllers out there that use simple on/off buttons. The answer was to build his own using force sensitive resistors (FSRs).
The controller has 16 buttons using FSRs arranged in a 4×4 matrix. The FSRs can sense the amount of pressure applied to a button and use that information for things such as a velocity of a note, control change value, etc.