Setting master side

[arielarmijo]

I want to set the master side defining the SPLIT_HAND_PIN as the documentation says.

Is this possible? and which pin of the microcontroller can be used to determine the master side?

best regards!

[diepala]

WHen designing the keyboard, I did not consider any pin to define the split hand. You can change the master side by firmware, including or removing the #define MASTER_RIGHT, or you might use one of the blackpill free pins, depending on what you want to achieve.

[222Phoenix]

A few years late on this, but if you were looking for a way to plug in either side and have that be the master, then I got it to work with EE_HANDS (https://docs.qmk.fm/features/split_keyboard#handedness-by-eeprom).

qmk flash -kb cantor -km -bl dfu-util-split-right
qmk flash -kb cantor -km -bl dfu-util-split-left

Alternatively you can set up swap hands and then trigger it with a macro or combo. I was doing that for a long time but now that EE_HANDS works I don't need it.