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This may just be a bad servo, but I’m having a problem getting my pen off the page.
It comes up for some stuff, but not for others, so the servo isn’t dead, but it’s behaving badly. I don’t know if that’s the servo’s fault or not.
I am using the command line interface from a raspberry pi 3b.
Axicli filename.svg -L2 -d40 -u55 -Z 200 -C
So, constant speed with 200ms delay on pen up, with what I hoped would be limited travel on the servo arm.
The servo arm swings almost 180 degrees, which is where the pen lift failure is happening.
I had hoped the -d40 -u55 would constrain its motion, but it doesn’t seem to.
Also the servo arm bounces back and forth in the downward position, in what I imagine is the difference between the -d40 and -u55, but in the wrong orientation with respect to “up.”
Is this just a bad servo? If so, no big deal. If not, where should I look?
Thanks
Is this one of our servos that came with the arm pre-attached, or is this some other servo?
My initial guess is that this could have been a “mis calibrated” servo, with the arm at the wrong angle, but since it’s one of ours, I would now suspect that it is just a bad servo. If so, please contact customer service via email for a replacement.
One other thing to check, if you are able to, would be to try raising and lowering the pen between those same values from within Inkscape (ideally on a desktop computer). If it still fails in the same way, you can be sure that it’s a matter of hardware failure rather than of something in the software setup or parameters in the CLI.
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