dual motor gantry issues, hal fix...... FIXED

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08 Dec 2019 22:59 #152345 by bevins
I am having an issue with two different type of switches on the dual motor gantry and it is causing issues with auto squaring gantry.
One is prox and other is mechanical. The mechanical switch is releasing at a different place and it is racking a very rigid gantry.

I would like to setup machine as XYZ machine instead of XYYZ. I guess stepgen.0 needs to send same output to stepgen.1 so It will act like an XYZ machine.

IS there examples of how to hook this up in hal?

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08 Dec 2019 23:41 #152346 by tommylight
Replied by tommylight on topic dual motor gantry issues, hal fix......
You could just wire both drive inputs to the same output, and have only 1 switch for homing. Very simple and very reliable up to the point one of the drives craps out.

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08 Dec 2019 23:45 - 08 Dec 2019 23:45 #152347 by bevins
Replied by bevins on topic dual motor gantry issues, hal fix......

You could just wire both drive inputs to the same output, and have only 1 switch for homing. Very simple and very reliable up to the point one of the drives craps out.


send step and dir signal from one output into two drives?
Last edit: 08 Dec 2019 23:45 by bevins.

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08 Dec 2019 23:58 #152348 by tommylight
Replied by tommylight on topic dual motor gantry issues, hal fix......
Yes.

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08 Dec 2019 23:59 #152349 by tommylight
Replied by tommylight on topic dual motor gantry issues, hal fix......
Just take it slow the first time you power it on and move the gantry, do just a very short jog and check if both motors are moving in the same direction.

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09 Dec 2019 00:11 #152350 by bevins

Just take it slow the first time you power it on and move the gantry, do just a very short jog and check if both motors are moving in the same direction.


I just tied both inputs to the first switch. IT works great.

Thanks.....

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