An Arduino Pro Micro-based USB gamepad code and pcb layout with mechanical key switches. Inspired by the layout and dimensions of the Dirtywave M8 tracker; suitable for M8 headless use, as well as other trackers that uses the NES-style layout, like LSDJ.
Emmulates either joystick or keyboard commands. Multiple alternate keymapping modes available, configured by holding a key during start up.
Requires the Arduino Keyboard Library and Joystick library.
8x (Cherry MX compatable or Kaihl Choc- choose the appropriate layout) mechanical switches of your choice, Arduino Pro Micro, and 2x 12 pos sockets or pin headers.
Additionally you may want to add a bottom plate w/ standoffs and necessary hardware. Drill Holes for the standoffs are unmarked, but I found that a 3-3.5mm hole inset 3.25mm from each edge worked well.
Switch hole dimensions are:
MX: 4mm, 1.8mm 1.3mm
Choc: 3.2mm, 1.8mm, 1.3mm
(Its good to center punch/mark these exactly before drilling to make sure all are in perfect alignment so the switches fit properly.)
Layout is single sided and suitable for home etching. Uses either smd sockets or thru-hole sockets/pins for mounting the arduino.
All the unused pins are 'broken out'in the pads along the edge and the 4 pads under the pro micro with VCC, GND, RX and TX ...for experimentation/modifications.
(print at 50%)
