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    Duet 2 Ethernet PWM fan outputs as heaters

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    Duet Hardware and wiring
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    • Hardware_SortingRoboticsundefined
      Hardware_SortingRobotics
      last edited by

      My team is currently trying to access a PWM output to control a heater from the Duet 2 Ethernet mainboard. We would like to do this without using the expansion board which exposes H6 and H7 PWM outputs.

      We currently do not know how to achieve this. I believe it is possible to assign the PWM fan pins to heaters, but I do not know if this may pose a risk to the hardware, or have other unintended consequences.

      Is there any way that we could use the E0 and E1 extruder heaters as simple PWM outputs?

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      • Phaedruxundefined
        Phaedrux Moderator
        last edited by

        How much current do the heaters draw? The fan headers are meant for low current devices like fans. You can use them to switch an external mosfet or SSR to control a heater though.

        Z-Bot CoreXY Build | Thingiverse Profile

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