Hi,
I have a dual z axis machine, using a CNC Shield V3, and hopefully GRBL… How do I configure the A drive as a cloned second Z axis please?
I’m guessing you have to have a jumper like you do on a dual Y setup. If you have one Y motor, I think you’re all set. If you have two, then I’m not so sure…LOL. I’ll guess that halves the power to the motors.
Arduino Shield V3- “A” Axis - Other Hardware / Motors, Mechanics, Power and CNC - Arduino Forum
Dual Z Motors on a Single Stepper Driver - Cable Modification - MKS/SKR/RAMPS
Ooooh that looks like it works, a bit late for a proper test but many thanks!!!
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if you don’t want to lose half the power, you can edit the stepper.c module in the Arduino IDE. Just set up a new stepper port and enable port (pins in the config.h) and clone the output commands for the z port with the new pins (step/enable). That works well.
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So tired last night, I only put one jumper on the blue, so confusion ensued as the A motor only went one direction… Yes, adding a second jumper did the trick.
The power isn’t really an issue for this little pcb mill, but your way is the solution I’d like as I don’t always use shields.
I see a switch for dual axis in the stepper.c, but not obvious how to add an extra motor on first peruse, I’d love to know more please {´◕ ◡ ◕｀}