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Chris Annin
Chris Annin
@chris-annin
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Joined: Jul 8, 2025
Last seen: Sep 13, 2025
Topics: 6 / Replies: 529
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RE: Rest position misaligned after Crash

Is that position shown after J5 autocalibrates? Is it possible the J6 spindle slipped in the pulley when it crashed - check mechanical calibration whe...

1 month ago
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RE: Excell calcs, Ar4-Mk2

I will try to make a new video on the kinematics. as for as atan xy - excel is backwards and does atan yx

1 month ago
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RE: Build AR4 style with AR3 parts ?

You can use the AR3 motors and encoders. Under the AR3 downloads there is a document on doing this follow the wiring from this document and then if y...

1 month ago
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RE: AR4 J2 Arm - Holes on side?

The holes on the side were originally inteded to secure some of the cables but are no longer used. I apologize those 2d drawings are out of date.

1 month ago
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RE: Swapping out J3 motor

I suppose the only concern I would have with using a nema 23 motor for J3 would be having to come up with a new motor mount to fit the nema23 drive to...

1 month ago
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RE: Was fine calibration removed?

Earlier in the AR2 software I had a fine calibration feature that allowed you to modify the calibration based on a reference position. I replaced that...

1 month ago
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RE: what is the payload of the AR3 robot arm

I dont currently have any upcoming updates related to payload. I have recently been doing some testing and the robot can lift 5lbs (possibly a little ...

1 month ago
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RE: what is the payload of the AR3 robot arm

@Systems Planet Thank you, you may be able to push 7 or 8 lbs going slow and limiting the torque or extension on joint 3 but I don't believe you will ...

1 month ago
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RE: what is the payload of the AR3 robot arm

Hello, If you go to the downloads and manuals page on the website and download the "AR3 Assembly Manual" have a look at chapter 6 specifications and t...

1 month ago
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RE: HK1612 bearing stuck on J5 Bearing Post

Can you email me a pic and measure the diameter of the post. Did you get the parts from the website or source elsewhere? I'm guessing its a bad bearin...

1 month ago
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RE: J5 Losing Position

Does the issue of losing position go away if you put J5 into open loop mode?

1 month ago
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RE: program with a physical button instead of the mouse.

I think that's a good potential solution.

1 month ago
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RE: program with a physical button instead of the mouse.

That is a good idea and one that has been brought up several times. The main issue is that the commands are fed and executed from the windows PC so it...

1 month ago
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RE: reading XYZ coordinates from excel.

@mateo-josue-cruz-gallegos It would have to be text edited. It is a specific format as programmed. I start looking into making the program file a text...

1 month ago
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RE: reading XYZ coordinates from excel.

I don't have anything currently to extract positions from a file like that. I am working on reading in Gcode files but that is a work in progress. Ive...

1 month ago
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