How to calibrate the 4th axis?


Firmware Version: 3.1.9

Operation System: Win 10

uArm Controlling Method: Studio

After a reset, the 4th axis has some degrees of deviation. How can I calibrate it so that it is completely aligned with the X axis?


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Hi there, the deviation is caused by the manual assembling. It’s a little bit hard to solve it in hardware. So we would suggest you to add the offset to your code and make it work correctly. Later we would add the offset command to fix the problem in software. Thanks for your support!

Ok, I undersand. I will give it a try.


Pushing it till I heard a couple of little clicks worked for me. Now when I do Wrist Turn to 90 degrees, it’s perfectly straight.

That might damage the mini servo as well. We don’t recommend to do that. Well, now it seems fine. :slight_smile:

Hi guys,
My gripper is offset as well and I suspected it was due to the assembly. So, in my Blockly code I execute a “Wrist Turn To” command with a value of 80. I do this right after a “Reset” command. It seems to work fine, but 10 degrees of offset seems a bit much.