It's a Dactyl Manuform with an integrated thumb based trackball, using the pmw3360 optical sensor.
It's powered by 2x Teensy++ 2.0's, using Drashna's Teensy VBUS Hack for better detection.
Make example for this keyboard (after setting up your build environment):
make handwired/dactyl_manuform/5x6_right_trackball:default
Flashing example for this keyboard:
make handwired/dactyl_manuform/5x6_right_trackball:default:flash
See the build environment setup and the make instructions for more information. Brand new to QMK? Start with our Complete Newbs Guide.