bdring

I thought it might be a buffer overrun, but there are no smoking guns in that report. Are you sure you are using the [current master branch from espressif](https://github.com/espressif/arduino-esp32) Are...

@Althafzahra You would need to put the signals used for SPI into the correct values for the MS jumpers and Reset pin of the A4988. Grbl_ESP32 cannot do that, but...

This board used to require a fork of Grbl_ESP32 and a fork of TMCStepper. The original TMCStepper has been updated to support daisy chained SPI and Grbl_ESP32 now uses that...

**Step/Dir** They are required. SPI primarily sets the features of the driver. It does have the ability to run motion profiles, but not step and direction. You could eliminate the...

As drawn, those are not R/C filters. There is no "R". I suggest grounding the CLK pin on the drivers to make it compatible with TMC5160

@rschenk Thanks. That sounds like a good idea. I will not be able to test the code for about 10 days. I am out of town without a TWANG. I'll...

Can you provide the complete schematic, or at least the TMC5160 connections?

What is the purpose of the stepper headers connected to 3.3V and CLK?  Try connecting CLK to ground.

I have a new version 1.3 that I plan to sell on Tindie soon. It will probably be at least 4-5 weeks before they are ready due to the problems...

The design is 100% tested. Also, some new features have been added to Grbl_ESP32 to allow any these axes to be combined (2 motor on one axis). Please sent $60...