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Robot Builds

#AR3

Motor collision error on AR3...

Hello,
I purchased the AR3 kit a few months ago, along with a Teensy 4.1 and CUI AMT103-V encoders from Arrow Electronics.

When I try to run the motors individually with the encoders connected, I consistently encounter a “motor collision” error. I am using the AR4 HMI Interface 3.0 software (.exe).

I should also mention that I was unable to source the Molex connectors in my country, so I used jumper wires for the connections instead.

I would appreciate any suggestions or insights on what might be causing this issue.

Thank you.

  • 2 comments

Chris Annin

Hello, please check out the AR3 tab and review the upgrade sheet for some helpful information. Let me know if you have any questions.

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John Dammeyer

Granted I only have J1..J3 fabricated and wired but what I did is set the encoder for 1000 pulses per rev which is 4000 edges per rev.

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I also configured the AR3 StepperOnLine AR3 drivers to match the AR4 settings:

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Now I can use the most recent AR4 software without worrying about changing parameters in the code. When I ask J1..J3 to move a specific distance it moves the correct amount.
You will have to home each axis to avoid those motor collision errors. Even if you just hook up a switch and tell it to calibrate only that axis and then press the switch.