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Peter J. A. Cock 2025-07-18 13:29:14 +01:00
commit 560ac10188

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@ -11,7 +11,7 @@ This is firmware for a Raspberry Pi Pico PR2040 controller monoblock 36 key desi
for background, although the final pin selection and trace routing changed).
This matrix shows the full 15×15 Tutte-Coxeter bipartite scanning matrix with the
two unused rows and columns last (❌), and the further 9 keys this would allow (⭕)
two unused rows and columns last (❌), and the further 9 keys this would allow (⭕)
if using 30 GPIOs rather than just 26 for a 13×13 scanning matrix. The allocation
of keys to matrix elements and scanning matrix rows and columns to GPIO pins was
arbitrary and down to how best to layout the PCB traces: