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    Laser config - Heater 6 pin permanently high

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    • rhys161undefined
      rhys161
      last edited by

      Evening all!

      Im currently running into an issue whilst trying to add a laser to my CNC.

      Overview:

      • Firmware Rev 3.3.0

      • Workbee CNC running a Duet Wifi 2 with an expansion board for using heater 6 5v PWM.

      So far ive used the following line and added to the config files -

      M452 C"exp.heater6" R255 F200 ; Enable Laser mode, on exp.heater6, with max intensity being 255, and a PWM frequency of 200

      Once i have saved this the PWM pin goes to 5v and stays there. Where am i going wrong with this?

      Any help is greatly appreciated.

      Thanks in advance

      droftartsundefined 1 Reply Last reply Reply Quote 0
      • droftartsundefined
        droftarts administrators @rhys161
        last edited by

        @rhys161 You most likely need to invert the output, by putting a ! in front of the pin name (the example for M452 shows this), ie

        M452 C"!exp.heater6" R255 F200

        Ian

        Cartesian bed-slinger with Duet 3 Mini 5+ WiFi and 1LC : RRP Fisher Delta v1 with Duet 2 Maestro : TronXY X5S with Duet 3 MB6HC and Roto toolboard

        1 Reply Last reply Reply Quote 0
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