bdring

There is very little change between 1.2 and 1.3. 1.2 should work fine. These days there is very little additional cost to making changes between orders. I think the input...

All pins should be soldered. Your settings are correct.

That orientation is correct. do you have both jumpers installed? 

Remove the jumpers and measure the voltage with spindle on at GPIO_NUM_25, GPIO_NUM_4 and the inner side of the interlock jumper.

Measure the the voltage on the J3 5V pin. On Thu, Mar 26, 2020 at 10:23 AM Harald Klein wrote: > With both jumpers removed, when spindle is on, I...

It seems like the level shifter is not working. If you are just using the spindle, you could try to bypass the level shifter. The relay will work on 3.3V.

Texas Instriments TXS0101

Yes. If you want to bypass it, just remove it and bridge these 2 pins. 

I have been using the TI TPS54360DDAR. It is good to 60V. I have it on this circuit. https://oshwlab.com/bdring/tmc2130-2-axis. Open sheet 1 to see the circuit.

We do not support Trinamic Motors with UART in Grbl_ESP32 and that board is probably not wired for it anyway. You must use TMC2130 drivers in SPI mode. They are...