- Beginner friendly through hole soldering.
- 60 keys arranged in a familiar qwerty layout with number keys arranged in a numpad.
- SPI, I2C, and 2 additional GPIOs broken out. Aside from these pins all others are used to read the key matrix.
- Teensy can be rotated with the micro USB facing up or down. Breakout pins will only work as expected with USB facing up.
PCBs are available on Tindie:
KiCad PCB files, Fusion360 model links, STLs and example Arduino keyboard firmware sketch available at:
Thingiverse entry for the HyperPixel 4 & Raspberry Pi 3 B+ Handheld proof of concept:
Various Keyboard Inspiration Links:
Earlier version of the key faceplate: