It was e for edge, now k for keys. Why? I'm toying with ideas for a full Tutte Coxeter graph (30 vertices/nodes/GPIO pins, 45 edges/switches) incuding 42 keys plus a rotary encoder (these act like three switches: clockwise, anticlockwise, press - so 42 edges for normal keys + 3 edges for a rotary encoder gives 42 + 3 = 45 edges) which could be named with suffix 43ke. |
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Tutte Coxeter 36k
This is firmware for an PR2040 monoblock 36 key design (three rows of five, and three thumb keys, for each hand). This is a diode-free design using a sparse 13 by 13 scanning matrix designed from a partial Tutte-Coxeter graph (using only 26 vertices or GPIO pins with 36 edges or keys - see this blog post for background although the final pin selection changed).
The first physical PCB for this is designed to fit in the Gamma Omega keyboard case, and use the same Raspberry Pi Pico based microcontroller board.
- Keyboard Maintainer: Peter J. A. Cock
- Hardware Supported: Tutte Coxeter 36k (single PCB) with Raspberry Pi Pico
- Hardware Availability: https://github.com/peterjc/gamma-omega
Make example for this keyboard (after setting up your build environment):
make tutte_coxeter_36k:default
Flashing example for this keyboard:
make tutte_coxetter_36k:default:flash
See the build environment setup and the make instructions for more information. Brand new to QMK? Start with our Complete Newbs Guide.
Bootloader
Enter the bootloader in 3 ways:
- Bootmagic reset: Hold down the key at (0,0) in the matrix (bottom left key, Qwerty
z) and plug in the keyboard - Physical reset button: Briefly press the button on the back of the PCB - some may have pads you must short instead
- Keycode in layout: Press the key mapped to
QK_BOOTif it is available
