qmk_firmware/keyboards/bastardkb/readme.md

Information for Various BastardKB Hardware

Handedness Pin on Elite-C Holder

The Elite-C Holder supports setting handedness by pin on pin F1 of an Elite-C.

To utilise this, you must be using an Elite-C compatible development board (with the bottom 5 pins broken out) and install the necessary resistor. The following firmware configuration can be made in your keymap directory:

# rules.mk

PIN_COMPATIBLE = elite_c

// config.h
#pragma once

#define SPLIT_HAND_PIN F1
#define SPLIT_HAND_PIN_LOW_IS_LEFT