4th (Rotary) axis for mill on ESP32

[imechura]

Is there a guide that shows how to enable a 4th axis on grblhal? If not can someone point me in the right direction? I am running on ESP32 the 4th axis is i'm trying to use is a rotary indexer.

[terjeio]

Is there a guide that shows how to enable a 4th axis on grblhal?

I have not made any.

Number of axes is defined here if you are compiling locally, if using the Web Builder with the Number of axes drop down in the General tab.

$376 is used to specify axes > 3 as rotary, send $$=376 for info. $538 is a brand new setting that allows fast 'rewind' of rotary axes.