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    Bed Heater making duet WiFi crash

    Scheduled Pinned Locked Moved
    Duet Hardware and wiring
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    • garevaloundefined
      garevalo
      last edited by

      Hi, this is my first post. We’re trying to get help with conversion of a BFB3D Touch to use the Duet WiFi.

      We’re getting everything to work one by one (steppers, etc) and now we’re trying to get the Bed Heater on. When we set the active temperature for the bed the board crashes (lost web connection), it also does this when M303 auto-tune

      The thermistor reading is fine at room temp.

      We are using a custom aluminum bed with a heat pad, and a 24v power supply. Seems like the wiring is straight forward, but the board crashes on active temp or auto tune

      Is there an more info that we can post to troubleshoot?

      Thanks you

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      • jens55undefined
        jens55
        last edited by

        Have you looked at the voltage level when you switch on the bed heat ? COuld it be that you are running out of electrons ?

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        • droftartsundefined
          droftarts administrators
          last edited by

          Next time it crashes, run M122 as soon as possible after restart, and post the output here.

          Ian

          Bed-slinger - Mini5+ WiFi/1LC | RRP Fisher v1 - D2 WiFi | Polargraph - D2 WiFi | TronXY X5S - 6HC/Roto | CNC router - 6HC | Tractus3D T1250 - D2 Eth

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          • dc42undefined
            dc42 administrators
            last edited by

            Most likely, the PSU can't handle the current draw of the bed heater. What is the PSU output current rating? Is the bed heater definitely intended for 24V operation?

            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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