uArm Serial No.: UARM-0505170439
Firmware Version: 3.1.9
Operation System: macOS 10.12.5
uArm Controlling Method: uarm Studio
I am doing a first test with one of my two Swift Pro units that arrived yesterday. I'm using the universal holder with a ballpen to draw something. What happens is that the uarm seems to move in Z as well, not just X & Y.
I adjust the zero point so the pen has contact with the paper.
When I start drawing, the pen initially doesn't even have contact with the paper.
As the drawing proceeds and X increases, the pen has too much contact with the paper, the arm has trouble moving and the shape gets distorted.
It look as if the XY plane is not parallel with the surface that the arm is on, but tilted by maybe one or two degrees around the Y axis.
Here is how the result looks. As you can see, in the region where the pen has contact with the paper w/o too much/too little pressure, the result is good.
Is there a way to fix this with some calibration procedure?
If this can't be fixed, I can't use the arm for 3D printing (shapes will get warped) or laser engraving as well (laser will get out of focus as arm moves in X).
The issue I describe seems similar to the one @derwentx is describing/showing a video of in https://forum.ufactory.cc/t/uarm-not-calibrating-position/692/26