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Every Halcyon Series keyboard follows the Halcyon Controller specification. If the keyboard has multiple versions, such as a version for MX switches and one for Kailh Choc low profile switches, the pins assigned will be the same for both. Please refer to that page as well as the table below to determine the pin mapping:

Functional pinKeyboard left sideKeyboard right side
IO_01COL0COL5
IO_02COL1ROW4
IO_03COL2ROW3
IO_04COL3COL4
IO_05COL4COL3
IO_06COL5COL2
IO_07ROW4COL1
IO_08ROW3COL0
IO_09ROW2ROW2
IO_10ROW1ROW1
IO_11ROW0ROW0
IO_12SIDE (3V3)SIDE (GND)
IO_13ENC_A (Encoder A)ENC_A (Encoder A)
IO_14ENC_B (Encoder B)ENC_B (Encoder B)
IO_15Not connectedNot connected
IO_16Not connectedNot connected

Halcyon Lily58 rev2 schematics.


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