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    extruder starts without commands

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    • DVD479undefined
      DVD479
      last edited by

      Hello,
      The printer mounts a duet 2 wifi, has a coreXY kinematics and mounts a double extruder. I've been working on it for some time but I haven't found a solution yet,

      problem:
      when I power up the duet the two extruders heat up without any command. They are uncontrollable by the duetWebControl and also by the panelDuet

      any suggestions can help, thanks

      1 Reply Last reply Reply Quote 0
      • DVD479undefined
        DVD479
        last edited by

        this is the code of the extruders

        ; Heaters
        M308 S0 P"bedtemp" Y"thermistor" T100000 B4092         ; configure sensor 0 as thermistor on pin bedtemp
        M950 H0 C"bedheat" T0                                  ; create bed heater output on bedheat and map it to sensor 0
        M307 H0 B1 S1.00                                       ; enable bang-bang mode for the bed heater and set PWM limit
        M140 H0                                                ; map heated bed to heater 0
        M143 H0 S120                                           ; set temperature limit for heater 0 to 120C
        M308 S1 P"e0temp" Y"thermistor" T100000 B4725 C7.06e-8 ; configure sensor 1 as thermistor on pin e0temp
        M950 H1 C"e0heat" T1                                   ; create nozzle heater output on e0heat and map it to sensor 1
        M307 H1 B0 S1.00                                       ; disable bang-bang mode for heater  and set PWM limit
        M143 H1 S260                                           ; set temperature limit for heater 1 to 260C
        M308 S2 P"e1temp" Y"thermistor" T100000 B4725 C7.06e-8 ; configure sensor 2 as thermistor on pin e1temp
        M950 H2 C"e1heat" T2                                   ; create nozzle heater output on e1heat and map it to sensor 2
        M307 H2 B0 S1.00                                       ; disable bang-bang mode for heater  and set PWM limit
        M143 H2 S260                                           ; set temperature limit for heater 2 to 260C
        
        
        jay_s_ukundefined 1 Reply Last reply Reply Quote 0
        • jay_s_ukundefined
          jay_s_uk @DVD479
          last edited by

          @dvd479 sounds like you've wired them incorrectly (although difficult to do) or you've blown the mosfets.
          Post a high quality photo of the area around the two heater outputs.

          Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

          1 Reply Last reply Reply Quote 1
          • Phaedruxundefined
            Phaedrux Moderator
            last edited by

            To verify your config isn't the cause, remove the SD card and power up. It doesn't seem like that is the case from what you posted, but you haven't shown the full config.g either.

            If the heaters still heat up with the SD card removed, then it's either the mosfets or the wiring. Photos of the wiring would help us confirm that.

            Z-Bot CoreXY Build | Thingiverse Profile

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