Sunday, October 27, 2024
Touch Probe Scans
I've connected the touch probe up and written a few scripts to generate a grid of probe points and analyse the resulting data by scraping the results from the CNCjs serial console window. This is what I'm getting:
The probed data (a 30x30 grid with 50μm spacing) looks like this, and suggests there is a constant slope to positioning that I'll hopefully determine and compensate for later:
Bear in mid I'm using a crappy but robust probe 'cos I don't want to destroy any nice ones while bashing things about a lot! I've got a better image of the modified slide holder that shows the setup a bit better:
There's a fairly extensive wiki entry here that details the process and provides the scripts etc. because I bet they'll be useful for a heap of other things than calibrating the probe.
