Sandy,

Does gcode input to the processing controller scale up or down when you resize the 'vector' gcode instructions? Are there any caveats to .svg files being sent to the lightweight control program in terms of getting the document properties right?

I'm having problems with drawings that seem to be going off the edge of my page, especially with the death to sharpie output. All the lines appear to fall within the bounds when in the controller, but go off the page when sent through the python script or they are being drawn much larger than expected.

Just so you know, my instructions queue is:
-Set motor speed
-set motor acceleration
-Set home
-drawing instructions from draw vector.

I have re-upped the machine dimensions, mm per rev and steps to the arduino direct to usb as I thought this might be the culprit. Any ideas?

I re-re-upped the config file, and made sure of all my measurements - I had set motor steps to 800, forgetting it was running on a uno-based machine. Pretty much got the most fundamental thing set wrong! Duh. Sorry for the false alarm.

As an aside, if you click on 'upload machine spec' to the arduino, save the queue, and run it with send.py will that do the same as having it connected over usb?

Sandy: Thanks. The lightweight controller has really sped up my workflow: I have a polargraph machine running at the school I work at. It's on the other side of the building, so once the paper, pen and home position are set, I've been doing some lovely A1 prints, but I don't have to tether my laptop, and I can check the progress over ssh. Best of all using 'screen' I can detach and retach and periodically check progress from the command line. (It works really well with a polargraph SD unit for when I'm too lazy to unplug the SD card too!)

Is there a command that would let you pause the command queue on a keypress, or add some sort of stall until keypress? I'm thinking of multipass command queues in different colours, which need a quick pen swap, or swapping pens halfway through a death to sharpie run!

I have implemented a cal to IFTT to get notifications on my phone when a print job is done. Saves me the trouble to go into the basement to check if it's time to switch pens.

A simple way to pause the print is on top of my wishlist for the lightweight script...

This is brilliant Rob!