bdring

@JamesNewton Sorry I made you sigh. You said "using USB OTG to an old cell phone" Your use of "to" threw me off. I have used USB OTG on tablets...

You could do the OTG now without any changes to firmware. If you want it charging, you need to leave the controller powered, even when not in use. This is...

@JamesNewton Yes, we can understand you. Please try not to be so confrontational. What you are talking about is already supported. This thread is about something completely different. It will...

Grbl_ESP32 is no longer supported. FluidNC is the new version of Grbl_ESP32.

This controller can do everything. https://www.tindie.com/products/33366583/6-pack-universal-cnc-controller/

The probe is on a pin that has an optional internal, to the ESP32, pullup resistor. The ESP32 has that feature on most pins, but not the XYZ pins. In...

An example machine definition is here. https://github.com/bdring/Grbl_Esp32/blob/main/Grbl_Esp32/src/Machines/spi_daisy_4axis_xyyz.h

Here is a PDF. Note: JLCPCB has a very restrictive list of parts. I have never been able to use their service. [SPI_4X V1.3 BOM.pdf](https://github.com/bdring/4_Axis_SPI_CNC/files/4892292/SPI_4X.V1.3.BOM.pdf)

I'll give it a look tomorrow. I lot has changed since that branch was touched. "Galvo" I love the sound of that. What you makin'

I see that original [TMCStepper](https://github.com/teemuatlut/TMCStepper) library [now supports SPI chaining](https://github.com/teemuatlut/TMCStepper/commit/1b9b33063973f5ab828bfd14a358b5647ebb01e5). No need for my fork. I think it is time to do a complete rewrite of all TMC driver support...