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Stop after fisrt operation

Discussion in 'OpenBuilds Forum Help' started by Martí Aracil, Dec 17, 2023.

  1. Martí Aracil

    Martí Aracil New
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    Hi, I'm using OpenBuilds with Arduino GRBL to run a DIY plasma cutter. The first operation run perfectly: cutting, movement, everything was okay. But after turn off the plasma cutter (M05), the software goes crazy. It moves to random coordinates (only in the software, not the machine) and then stops.
    I tested with the plasma off and it does the same thing. With simulation mode, the program runs perfectly.
    Any idea?
    I'll attach a link to a YouTube video of my problem.

    Thank you very much, and sorry for my bad English
     
    #1 Martí Aracil, Dec 17, 2023
  2. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Possibly a HF plasma? They aren't suitable for CNC - too much EMI. Get a Blowback/LF start plasma.



    The arduino has no filtering or shielding either, replace it with a proper controller like a https://docs.openbuilds.com/blackbox-x32
     
    #2 Peter Van Der Walt, Dec 18, 2023
  3. Martí Aracil

    Martí Aracil New
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    Hello, thank you, but this isn't the problem. With the plasma disconeted ,do the same...
     
    #3 Martí Aracil, Dec 18, 2023
  4. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Genuine Arduino, or chinese fake with CH340 USB chip?
     
    #4 Peter Van Der Walt, Dec 18, 2023
  5. David the swarfer

    David the swarfer OpenBuilds Team
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    please upload the gcode
     
    #5 David the swarfer, Dec 18, 2023
  6. Martí Aracil

    Martí Aracil New
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    it's chinese fake with CH340 ... Could this be the problem?

    I attach g.code
     

    Attached Files:

    • PC2.nc
      File size:
      1.8 KB
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    #6 Martí Aracil, Dec 18, 2023
  7. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    They are notorious CH340 and speed setting · Issue #294 · gnea/grbl

    Drops characters when their internal buffer is near saturated.... Causes lots of flow errors, serial corruption.
     
    #7 Peter Van Der Walt, Dec 19, 2023
  8. David the swarfer

    David the swarfer OpenBuilds Team
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    gcode is ok, probably the USB chip.... possibly the USB cable, use a good, shorter one.
     
    #8 David the swarfer, Dec 19, 2023
  9. Martí Aracil

    Martí Aracil New
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    I have changed the cable and the Arduino board and now it works. I don't know exactly where the problem was, but it seems like it would be the board.
     
    #9 Martí Aracil, Dec 25, 2023

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