bdring
bdring
http://wiki.fluidnc.com/en/support/faq#how-do-i-invert-a-pin-state
I think this is it. https://github.com/bdring/FluidNC/blob/ATC_Experiments/FluidNC/src/Spindles/KressATC.cpp
We need datasheets on your parts and a schematic of how you are hooking everything up. The config file and messages are applicable. Please edit your initial post to add...

We use the standard SD code from the Espressif libraries. The 6x has been extensively tested with SD cards. The problem is typically with the SD card. - What brand...
We don't support the S3 yet. It is being worked on. Please consider donation to support this expensive project.
http://wiki.fluidnc.com/en/features/atc
Read this completely if you want to edit the wiki. http://wiki.fluidnc.com/en/wiki_contributions You say open source. What ECAD program and where are the real source files?
Yes, I just added that section. This is something I have been meaning to do for a while and not a response to your request. There are no wrong or...
We do not support the s3