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Chris Annin
Chris Annin
@chris-annin
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Joined: Jul 8, 2025
Last seen: Sep 15, 2025
Topics: 6 / Replies: 529
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RE: ROS 2 Driver for AR4 Now Available

I wanted to mention that Yifei Cheng has added files for the MK2 to this repo. I have not had time to test yet but I was hoping someone in the comunit...

2 months ago
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RE: Tarrif Cost of AR4

Unfortunately I still have to pay 70% on any aluminum manufactured parts: Aluminum parts from China remain subject to the following tariffs: 25...

2 months ago
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RE: Tarrif Cost of AR4

Where are you seeing a pre-payment for tariffs? I don't have any prepayment or tariff charges listed as part of the purchase. Unfortunately I did hav...

2 months ago
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RE: AR4 Control Software does` t want to start!

@Minh Nguyen the serial com timeout should be the only difference but I'll do some testing on the calibration and let you know what I find.

2 months ago
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RE: AR4 Control Software does` t want to start!

I have compiled a exe beta version that has the serial timeout added. Please let me know if anyone having the windows 11 issue can open this and then ...

2 months ago
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RE: AR4 Control Software does` t want to start!

Interesting, thank you for the feedback on that. The serial commands are nested in a "try" function which should write an error to the log if there is...

2 months ago
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RE: AR4 Control Software does` t want to start!

That error indicates the icon file is not in your build folder. I have not yet figured out the initial issue. I just bought a brand new windows 11 com...

2 months ago
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RE: AR4 Control Software does` t want to start!

I haven't been able to reproduce the issue on windows 10 or 11 but Cody was able to send me a screenshot of the cmd window / error which helps immense...

2 months ago
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RE: AR4 Control Software does` t want to start!

I've run the exe on windows 10 and 11 machines and have not been able to replicate the issue. I am continuing to investigate, in the meantime please k...

2 months ago
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RE: AR4 Control Software does` t want to start!

Are you trying to run the source code or just the exe file?

2 months ago
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RE: Axis coordinates off after poweroff (repeatability issue)

If it is off by 4mm after powering off and back on I suspect the arm is moving slightly when powered off? as the motors do not have brakes it must rem...

2 months ago
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RE: Axis coordinates off after poweroff (repeatability issue)

If you park the robot in the vertical rest position, power the robot off and back on without disturbing the arm position does it maintain position aft...

2 months ago
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RE: Which one is better for the printer

The choice between NEMA 17 and NEMA 23 depends on your printer’s frame, size, and the level of torque you need. Most consumer 3D printers use NEMA 17 ...

2 months ago
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RE: AR3, Teensy Board

The main issue is that the Teensy 3.5 board is 5v tolerant for the inputs whereas the other boards like the 4 and 4.1 are not - they operate at 3.3v. ...

2 months ago
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RE: what is the software & hardware license of AR2

@robert-hasslen The license for the robot requests that people not build and sell robots for profit or sell robot parts for profit. If you are using t...

2 months ago
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