sainsmart 3018 MX3 laser does not immediately honour M3/M5


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Thread: sainsmart 3018 MX3 laser does not immediately honour M3/M5

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    Member lawrencek's Avatar
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    Default sainsmart 3018 MX3 laser does not immediately honour M3/M5

    I am using MACH3 with the Sainsmart 3018 MX3,

    The laser does not immediately obey M2 and M5.
    (I'm Using Freecad, which does not issue motor off when G0.
    So I edited the file and added M3/M5 at the correct places.)

    Problem - the laser comes on before the G0's are complete, and
    goes off before the cutting is complete.

    I have added G4 P 2 commands and this fixes the problem, but the
    laser is on for a short time before moving and after stopping.

    Why do I need these delays (using PWM). Can I not turn the laser off/on
    immediately. I also notice the delay when I press "spindle CW F5".

    I saw that I could use M10 or M11 to do this but I cannot set this up.

    I am using USB, and I enclose photos of the board. It is "MACH3 controller for mini CNC" and I have versions 1.3 and 3.1. They look basically the same.

    The DLL that Sainsmart gave me is for BL- UsbMach which when I look it up is for a different board. I am disheatened that I cannot get the laser to sync, but I can a bit if I put G4 commands in. Ienclose my file (G4's commented out)

    Sainsmart say that Drufel (another CNC controller S/W does not have this problem (( conter whick noard - STB5100). But MACH3 is much better.

    Do you have any other driver ideas? I have tried all the settings that I can think of!

    Lawrence

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    Last edited by lawrencek; 10-16-2019 at 06:14 PM.


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sainsmart 3018 MX3 laser does not immediately honour M3/M5

sainsmart 3018 MX3 laser does not immediately honour M3/M5

sainsmart 3018 MX3 laser does not immediately honour M3/M5