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Split Tester

A two-switch tester built using two Pro Micros, mainly intended to test RGB on split keyboards. Seen here:

Keyboard Maintainer: Bakingpy/nooges
Hardware Supported: Pro Micro

Make example for this keyboard (after setting up your build environment):

make handwired/splittest:default

Example of flashing this keyboard:

make handwired/splittest:default:avrdude

See the build environment setup and the make instructions for more information. Brand new to QMK? Start with our Complete Newbs Guide.


  • Add switches to both Pro Micros across B3 and B6 pins
  • Add pull-up resistor to left side between VCC and F6
  • Add pull-down resistors to right side between GND and F6
  • Connect the following pins on both sides together: D0, D1, GND, VCC
  • Add I2C 4.7kOhm resistors between D0 and VCC, and D1 and VCC
  • Wire Di of RGB strip for each half to D2
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