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    External Trigger for syncing other devices.

    Scheduled Pinned Locked Moved
    Duet Hardware and wiring
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    • MMNotsundefined
      MMNots
      last edited by

      Hi all,

      I'm trying to use Duet3d ethernet to build a 3D scanner. In order to do that I must be able to scan (receive data) after each move. Is there any way that I can send a trigger signal from duet board to my scope? I just need to know that one step is executed and the system is ready to receive data.

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      • SupraGuyundefined
        SupraGuy
        last edited by

        If you have control of the Gcode, I might be tempted to use a heater. Set up the Gcode to do a move command, then turn (for example) the E1 heater) on and back off again

        Your other control reads 0V on the heater - takes its reading, then sends Gcode to move, turn the heater back on. Rinse and repeat.

        Lead screw driven printer, powered by Duet 2 Wifi
        MPCNC powered by Duet 2 Wifi
        CoreXY printer driven by Duet 3 6HC
        LowRider CNC powered by Duet 2 Wifi

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        • dc42undefined
          dc42 administrators
          last edited by dc42

          One of our OEMs is already using a scanner with Duet. I don't know the details, except that it uses a Raspberry Pi to do the scan, communicating with the Duet over USB. RRF supports GCodes M750 thru M756 for this purpose.

          Duet WiFi hardware designer and firmware engineer
          Please do not ask me for Duet support via PM or email, use the forum
          http://www.escher3d.com, https://miscsolutions.wordpress.com

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          • fmaundefined
            fma
            last edited by

            Maybe using I²C, with a circuit, like PCF8574/74A?

            Frédéric

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