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Can you please describe what “arm flakes out” means?
Sorry for the very slow reply– there isn’t much activity here (hasn’t been for a few years), and we’re likely to freeze the forums soon. Our primary support “forum” for the past few years has been our discord server, which is now rebranded as the Bantam Tools discord server: https://bantam.tools/chat
The homing switch is a basic limit switch. There isn’t an official upgrade path because of how the mounting features are set up, but I imagine that you might be able to add your own. If you’d like to talk about that, let’s follow up by email.
Great. That’s the type of change that we are planning for the software if the upstream bug doesn’t get resolved promptly.
Hmm. We don’t have experience with pipx, so I’m not sure why that’s requiring a specific lxml version.
We’re planning to pin the lxml requirement in the next point release unless they fix that upstream.
This appears to be due to a bug in the latest release of lxml.
Try: python3 -m pip uninstall lxml
Then, python3 -m pip install lxml==4.9.4
I am able to reproduce the issue, and I will look into it.
I’m not sure if it’s normal because I’m not very clear on what it is that you are describing.
I’m not sure what you mean by “smoothly stroked”, and I’m not sure what you mean by “where strokes are varied”.
I’m also not sure what settings you are using, so I’m not sure whether or not you have missed something.
That said, a “dot that looks like a comma” at the end of a word sounds like an issue with pen height (and not related to the other things that you’re describing). If the pen height is not set well (between physical position and settings), it can be the case that the AxiDraw carriage begins moving before the pen is fully lifted from the page, and this is what leaves the tail on the pen stroke.
The Z axis motor on a standard AxiDraw does not apply any downward pressure at all.
The cause, and solution, are the same. And if you’re still having trouble, do use the contact form.
Here’s the schematic: http://cdn.evilmadscientist.com/KitInstrux/flickery_flame.pdf
There are six parallel circuits, each with a resistor in series with an LED.
An active stylus like an Apple Pencil will usually work without modification, on tablets like an iPad that are designed to work with it.
In some cases a passive (capacitive) stylus will not work on its own, since it is designed to read something with the same characteristics as a stylus contacted to a human body.
A solution that can work is to add a “grounding wire” — a conductive wire that touches the stylus and is electrically grounded. (It is possible to pick off a ground wire from the pen-lift servo motor, in case that is helpful.) In our experiments here that has generally worked.
However, your particular screen and stylus may not behave the same way, and you may need to experiment with it further.
Here are old reddit and stackexchange posts that describing the same general issue; you are certainly not the first.
Enhance a grounded stylus to trigger capacitive screen
byu/azertguigui inAskElectronicsTry flipping the wiring of one of the motors.
Are you still looking for a solution to this?
A path has to have at least two points. You can make these very close together, a line segment of width 0.01 mm is *much* smaller than a pen width, and should be indistinguishable from a dot.
Another approach is to make a tiny circle — again, start with your pen width or smaller — but that won’t be as small as a tiny segment.
Use short line segments, for example equal to the width of your pen (maybe 0.5 mm) or smaller.
