surface probing in firmware?



  • I am starting a 3D printer tool change project.

    I am evaluating the idea bringing the changed tool to a fixed ball probe and do an xyz tool compensation. Sadly that probably involves a computation that is outside the scope of any same firmware developer (we are in DMM territory now).

    Is there a system to tell the system to probe a grid of point and send it on the wifi?

    can I add plugins in JS for example? thanks for your help.


  • administrators

    Have you considered using kinematic couplings for your tools, as E3D does in their tool changer? Kinematic couplings give highly reproducible positions, so you only need to calibrate each tool once.



  • my thinking is that my tools themselves will be slightly crooked or of different length in their little carriage.


  • administrators

    @nraynaud said in surface probing in firmware?:

    my thinking is that my tools themselves will be slightly crooked or of different length in their little carriage.

    True, but if so then you need only calibrate them once. I can see that this could be done automatically if your extruder nozzles are all perfectly round, with the hole dead centre. Otherwise you would still need to calibrate them manually to allow for nozzle differences.



  • Well, with all the fiddling I do, I need to repeat my "one time calibrations" a lot 🙂

    I suspect/hope the nozzles are made on a swiss lathe, I don't know if it's a sound assumption, but it seems to be the cheapest way to make them.


 

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