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Published 20 hours ago • verified publisher icon dguerizec

Using X and A for dual motor gantry

Open blallen62 opened this issue 5 years ago • 3 comments

Hi, how do I go about using the A axis as my second motor on a dual motor gantry setup on the X axis? I'd like to be able to home the two motors independently in order to square the gantry automatically.

blallen62 avatar Dec 15 '19 23:12 blallen62

I would also love to get an answer. I'm struggling with it for days. For now, i have two motors on one pin but it's impossible to easily square the gantry, as @blallen62 said. @dguerizec can we ask for advice? thank you

tpaszkiewicz avatar Mar 26 '20 21:03 tpaszkiewicz

Well, grbl is not designed to do this alone. For double axis homing, you'd have to use an external program, but I don't know any that works with grbl. I now personally use linuxcnc to control my CNC and grbl is only for my 3 axis, 3 steppers laser engraver.

dguerizec avatar Mar 26 '20 22:03 dguerizec

Since originally starting this thread I've just given up on dual axis with grbl. I just have a single pin on the mega tied to two stepper drivers. I square it every once in a while manually and have $1=255. It's good enough for what I'm doing now.

blallen62 avatar Mar 26 '20 22:03 blallen62