[Dr. Ricky]

lxml 4.6.3

also

axidrawinternal 2.7.4

:)

[Dr. Ricky]

No, this is on intel on QNAP, from a package manager entware.net. Basically a version of Linux. I can run Docker images on it, but would have trouble passing the USB port to it.

[Dr. Ricky]

Seems to be a pretty common error among a lot of python programs that use lxml.

[Dr. Ricky]

I get the error

File “<stdin>”, line 1, in <module>
ImportError: cannot import name ‘etree’ from ‘lxml’ (/opt/lib/python3.9/site-packages/lxml/__init__.py)

[Dr. Ricky]

So far, still inside the python environment. No error.

[Dr. Ricky]

I get /opt/bin/python3

which is the place it was installed. Version is

Python 3.9.5

[Dr. Ricky]

Hi, Windell,

I’ve tried that, no change to the error.

from lxml import etree
ImportError: cannot import name ‘etree’ from ‘lxml’ (/opt/lib/python3.9/site-packages/lxml/__init__.py)

[Dr. Ricky]

I just wanted to update everyone on the resolution of this problem. Turns out that the EBB board itself was the problem. The folks at EMSL let me order a new v2.6 board (turns out the original was v2.3), and I replaced it. A firmware update run, a new micro-USB cable – and the machine now responds to commands in Inkscape.

[Dr. Ricky]

Oops, I just found the replacement power supplies listed, and ordered one. Hopefully it’ll work. I’ll keep you updated when it arrives.

[Dr. Ricky]

Yes, the servo cable was unplugged. Do you recommend a source for replacing the power supply? I think I found the thread with the specifications and can try to locate one locally.

[Dr. Ricky]

I did check the firmware, and used the UpdateEBB app to update the firmware to the latest version 2.7.0

[Dr. Ricky]

To test this, I unplugged the servo cable (3 wires, black wire closest to the edge of the “Home” module). When I plugged the USB cable back in, there was a green light on. With the power supply plugged in, the blue pen lift motor didn’t move this time.

I went back into Inkscape, and pulled up Manual Control, went into Enable XY Control. When I hit Apply, the low voltage warning came up.

I tried to walk the carriage in either X or Y directions, but only got the low voltage warning. It didn’t actually move.

[Dr. Ricky]

My apologies, there’s a misunderstanding. What I meant by not getting past the warning is that every operation goes back to that warning. So I can’t seem to do anything else past it. I suspect you’re right that the pen-lift motor is the problem, as it isn’t moving just once but continuously in a jerky fashion. I’ve gone on the website and ordered a replacement motor but it seems that they’re not yet in stock for a while.

[Dr. Ricky]

I’ve been following along the PDF of The User Guide p 12 Section 2.3, which lists “The pen-lift motor cable and the pen clip are disconnected for shipping. Your first two steps, out of the box, are to re-attach these parts.”

But there are no actual directions for connecting the pen-lift motor or how to replace the pen-lift motor in the guide. It skips directly to attaching the pen clip.

[Dr. Ricky]

Is there a way to repair the pen-lift servo motor? It isn’t buzzing but it *is* moving immediately. I cannot get past the low voltage warning to follow along the rest of the User Guide.

[Author]

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