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    Wiring External Machine Light Led Indicator Signal Tower

    Duet Hardware and wiring
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    • tmreith
      tmreith last edited by

      Is it possible to interface a multi-light signal tower to the Duet Wifi board? I'd like to be able to show a green status light when the machine is running a print, yellow light when in standby, and red when the machine is in alarm or fault mode.

      Has anyone had any success with a signal tower?

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      • A Former User
        A Former User last edited by

        Think you'll have to look into

        https://duet3d.dozuki.com/Wiki/Gcode#Section_M42_Switch_I_O_pin
        https://reprap.org/wiki/RepRap_Firmware_macros#System_macros

        add m42 to config.g to make it green, and add m42 to your start block in the slicer to make it yellow, add another few M42 to stop.g and/or cancel.g to turn back to green. make sure you add M0 to your slicer end block.

        there are pause.g and resume.g files as well if you want to change lights. Not sure about faults or alarms.

        you probaby can't drive any significant light directly from the IO pins unless the lights have integrated drivers

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        • tmreith
          tmreith last edited by

          Nice idea. By using RGB LEDs this will work very well.

          https://toms3d.org/2017/07/16/software-controlled-leds/

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