Grbl build: v1.1
TB6600: motor driver
Stepper motor: 4-wire (I tested the wire order to verify it does work with simple code)
Grbl Panel: 1.0.9.18

I’ve having trouble wiring both the motor driver along with the wires going to the grbl shield. I have a 3 axis CNC machine.
I just do not know how the wires on the motor driver need to be jumped wired to the grbl shield...

I followed this guide to flash the firmware onto the Arduino Uno.
https://makerhardware.net/wiki/doku...._torque_bundle

I’ve tried several of the following:

Attempt #1
Comment #4
Connecting UNO R3 AVR Module / Arduino CNC Shield to TB6600 for Nema23 stepper motors

A4988 – I do have 4 of these, but am I correct to assume that I do not need to have these on the shield since I have the motor drivers?

The stepper motor did get warm and sounded like it was humming, but it never rotated at all.


Attempt #2
https://www.instructables.com/Deskto...duino-Based-1/