I wanted to know if anyone has had success - perhaps on other CNC machines - connecting two stepper motors to one driver output (such as the two on the y rails). I am interested in the possibility of freeing up a controller driver for a future 4th ‘C’ axis use. Are there any negative impacts of this…

Personally, I would not do it directly. I would use a breakout board, but in theory it would work since there are no encoders being used for feedback. The only thing I’d maybe worry about is the fact that homing is apparently done via stalling the motors. (I haven’t got mine up and running yet to…

I was thinking the same thing. Have you tried it yet? I was also wondering how to wire the Y axis motors in series. You can see my other poste here . I would have liked to wire the Y motors in series and then add an A axis if possible.

I did two stepper motors in parallel for the Y axis on a laser engraver. It worked fine for me. I made sure the wire lengths was identical for both motors.

I was reading that in parallel it makes the wires heat up more and draw more amperage. I don’t know which is the correct way to wire them, series or parallel. I’m looking for a wiring diagram so that I don’t make the motors go opposite directions and jam up my machine. haha Would you please share y…

I would be worried about drawing too much current and damaging the controller. For a laser there’s not much draw on the steppers but carving could. Ideally what you would want is to have drivers for the steppers not in the controller. It would be nice to see a schematic of the 1F controller. It …

Controller version 4 and 5 are on github: onefinity-pcb/Schematics at master · OneFinityCNC/onefinity-pcb master/Schematics Contribute to OneFinityCNC/onefinity-pcb development by creating an account on GitHub.

Thank you for the responses! I’m very new to this and I’m a designer, not an engineer or tech so I think I’ll wait until someone has done it successfuly before attempting it myself. I wanted to free up a driver to use for a rotary axis but I’ll just swap my Y cables with an A cable when I need to us…

Hey Bruce, the following citation applies to Buildbotics Controller V1.0 and since Onefinity CNC Controller is a hardware fork of Buildbotics Controller, especially driving the four stepper drivers applies too. Note that you always should have a look at the schematics (of both Onefinity CNC Control…

This is wonderful, thanks so much Aiph5u!! I just finished setting up the A axis motor. With a bit of tweaking it seems to be working. So I’ll certainly try this next. I just need to order a couple of extra cables from Onefinity first. Thank you very much again! Cheers

@Bruce_T did you ever give this a try? I’m headed down the rotary path myself with the standard (buildbotics) controller and am trying to determine if this method will work instead of swapping out the X or Y axis completely.

Two stepper motors on one driver

Geige (Tom Wert) December 31, 2023, 6:43am 16

I do not really think that is correct. See here:

https://forum.onefinitycnc.com/t/why-are-they-uneven/14346

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Two stepper motors on one driver

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