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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). 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 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 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 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: arbitrary and down to how best to layout the PCB traces: