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Chris Annin
Chris Annin
@chris-annin
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Joined: Jul 8, 2025
Last seen: Oct 4, 2025
Topics: 6 / Replies: 532
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RE: Auto Calibration Issue - Control Software Freezing

Can you verify with a multimeter that you have 3.3v, GND and 5v on the 3 terminal block in the base of the robot? When you run the test limit switches...

2 months ago
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RE: Position out of reach

Is your robot fully calibrated? can you share a screenshot of the home screen and a picture of the corresponding robot position?

2 months ago
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RE: Mounting AR4 on Ceiling rails

Mounting the robot inverted should be just fine. The rest position for an inverted mount should be the same as with the robot mounted vertically - it ...

2 months ago
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RE: J4 cannot rotate reversely

@ming I agree, your troubleshooting seems correct and its likely a driver issue. Can you also put J4 into open loop mode in the settings tab and verif...

2 months ago
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RE: J4 cannot rotate reversely

There could be a potential wiring issue. Can you check with a multimeter that the dir input to the driver for J4 has a solid connection from the teens...

2 months ago
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RE: J5 Calibration Overrunning

@haochen-gao The negative direction should move the end effector upward - the carrier toward the limit switch. Have you double checked the J5 driver d...

2 months ago
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RE: J5 Calibration Overrunning

Hello, have you run the test limit switch program? I would recommend verifying that at the teensy board pin 30 for the J5 limit switch is registering ...

2 months ago
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RE: AR3 J3 homing sensor issue. teensy fried?

Just so I understand completely you are getting 1.5v at pin 28 of your teensy board when the switch is made? Are you getting a solid GND on that pin w...

2 months ago
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RE: J2 gearbox motor housing too far from J2 tension ring ?

@jann-h Its not critical. If its a mm wider its not an issue - its only an issue if its too close and has interference.

2 months ago
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RE: J2 gearbox motor housing too far from J2 tension ring ?

Hello, the printed spacer should be 10.5mm thick and 12.6mm of the gearbox housing should be outside of the spacer.

2 months ago
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RE: J2 gearbox backplate screws glued in?

I will reach out to Stepperonline and find out what type of loctite they are using and request they not loctite these in the future. Can you tell me h...

2 months ago
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RE: Manual / kit fastener question

Hello, I've had some supply chain issues and depending on supplier I've had some batches of the rocker switch come with shorter wires. I have added a ...

2 months ago
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RE: Homing Direction

If you are running the latest software but your robot was an initial AR4 build I would use the MK1 default setting on the kinematics tab. If rolling b...

2 months ago
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RE: What does correctPos function do?

If a crash is detected then it uses the encoder value to reset or correct the position to what the encoder says it should be.

2 months ago
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RE: 3D printing parts

Hello, Its really not too critical which print setting you use for the covers and spacers shown on 40 - 42, you can certainly utilize any settings tha...

2 months ago
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