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Blackbox Voltage output

Discussion in 'Controller Boards' started by Lilo, May 29, 2019.

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  1. Lilo

    Lilo Well-Known
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    Hello, I am trying to setup the voltage output feature of my black box and I am unable to get it to work. Maybe I am misunderstanding the typical setup but I would like to use the voltage output and the trigger to control an external device (independently powered) and to modulate its intensity with a 0-5 V signal. I confirm that the BB is setup with the trigger pin in the M3/M5 position but, when I send a GCODE command as in the instructions (e.g. M3 S1000) nothing happens. The potential between ground and 0-10V is set at 0.0025 V independently of the command. Any suggestions on what I am missing?
     
    Peter Van Der Walt likes this.
  2. Lilo

    Lilo Well-Known
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    OK. Figured out the issue with the DC voltage output was the 'Laser-mode Enabled' setting in GRBL. It needed to be 'disabled' to work as I wanted it. I am still confused as to how one would typically use the relay function of the BB. I can't measure any response on the relay channel when using M3 or M5 commands. I would love to use the relay to switch on/off the tool while the voltage controls the intensity.
     
    Peter Van Der Walt likes this.
  3. Lilo

    Lilo Well-Known
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    OK. I resolved the issue and I guess I answered all my questions but will leave this here in case someone else has similar issues.
    The relay did not work when setup in the M3/M5 pin but it worked fine in the M8/M9 pin configuration. I don't know why but I am guessing it relates to settings I am not familiar with. In any case, it finally worked as I needed after I switched the pin to M8/M9 and after I set the 'Laser-Mode' to disabled. Now I can independently modulate the tool intensity with voltage and turn on/off with the relay.
     
    Peter Van Der Walt likes this.

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