This is an open souce MIDI pad based on Adafruit's Mini UNTZtrument. The main aim of this project was to build a two-pad midi controller for Trellis PCBs.
Starting from Mini UNTZtrument, I tried to redesign it and improve it a bit. The first thing I did was to add an extra Trellis PCB. This way, you can control each pad with each hand, making it easier to play and control.
Also, I decided to switch the normal potentiometers for some sliding ones. Now you can change the values you have mapped just with your thumbs!
Finally, I went for an eassier way to assemble it and nicer finish. This drove me to place all the counterbored holes on the bottom of the base, making the assembly in one direction while hidding all the screws at the same time.
This is still a work in progress, so i would recomend you to wait for newer versions with better tolerances for a smooth fit. Hope you like it :)
For further information visit Adafruit's Mini UNTZtrument Midi Controller here: http://www.thingiverse.com/thing:409733
You will need to print:
1x Base.stl: it takes a some time to print so be patient. Also, you should know that you only have to use the two holes near the side and the one further to attach the Arduino. Do not use all of them!! The other one does not fit properly.
1x Top.stl: you must rotate it 180º before slicing.
2x Pad_holder.stl: here are attached the Trellis PCBs. They are symetric so one for each PCB.
4x Pot_encl.stl: I am using 4 10k sliding potentiometers, so you will have to print 4 enclousures for them. You may also need to sand them a bit (I'm working on it)