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    Heater not working

    Scheduled Pinned Locked Moved
    Duet Hardware and wiring
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    • NiklasPundefined
      NiklasP
      last edited by

      Hi, I just finished wiring up my printer and wanted to test the heaters. Bed works but due to any reason I can't get the hotend heater to work. I already tried a second one, changed from e0 to e1, measured if there is a break in the wiring ( about 15 Ohm so it should fit the 40W rating) and checked the thermistor that works as well.

      I'm using this one from trianglelab: https://de.aliexpress.com/item/32815934251.html?spm=a2g0o.store_home.productList_1322398741.pic_0

      (don't mind the whole code. I scraped the old config.g and uploaded a new one. Didn't do any other changes yet)

      ; General preferences
      G90 ; send absolute coordinates...
      M83 ; ...but relative extruder moves
      M550 P"My Printer" ; set printer name

      ; Network
      M552 S1 ; enable network
      M586 P0 S1 ; enable HTTP
      M586 P1 S0 ; disable FTP
      M586 P2 S0 ; disable Telnet

      ; Drives
      M569 P0 S1 ; physical drive 0 goes forwards
      M569 P1 S1 ; physical drive 1 goes forwards
      M569 P2 S1 ; physical drive 2 goes forwards
      M569 P3 S1 ; physical drive 3 goes forwards
      M569 P4 S1 ; physical drive 4 goes forwards
      M584 X0 Y1 Z2:3 E4 ; set drive mapping
      M350 X16 Y16 Z16:16 E16 I1 ; configure microstepping with interpolation
      M92 X80.00 Y80.00 Z800.00:800.00 E420.00 ; set steps per mm
      M566 X900.00 Y900.00 Z12.00:12.00 E120.00 ; set maximum instantaneous speed changes (mm/min)
      M203 X6000.00 Y6000.00 Z180.00:180.00 E1200.00 ; set maximum speeds (mm/min)
      M201 X500.00 Y500.00 Z20.00:20.00 E250.00 ; set accelerations (mm/s^2)
      M906 X800 Y800 Z800:800 E800 I30 ; set motor currents (mA) and motor idle factor in per cent
      M84 S30 ; Set idle timeout

      ; Axis Limits
      M208 X0 Y0 Z0 S1 ; set axis minima
      M208 X370 Y370 Z400 S0 ; set axis maxima

      ; Endstops
      M574 X1 S1 P"xstop" ; configure active-high endstop for low end on X via pin xstop
      M574 Y1 S1 P"ystop" ; configure active-high endstop for low end on Y via pin ystop
      M574 Z1 S2 ; configure Z-probe endstop for low end on Z

      ; Z-Probe
      M558 P5 C"zprobe.in" H5 F120 T6000 ; set Z probe type to unmodulated and the dive height + speeds
      G31 P200 X0 Y0 Z0 ; set Z probe trigger value, offset and trigger height
      M557 X15:215 Y15:195 S20 ; define mesh grid

      ; 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 B0 S1.00 ; disable 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"e1heat" 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

      ; Fans
      M950 F0 C"fan0" Q500 ; create fan 0 on pin fan0 and set its frequency
      M106 P0 S0 H-1 ; set fan 0 value. Thermostatic control is turned off
      M950 F1 C"fan1" Q500 ; create fan 1 on pin fan1 and set its frequency
      M106 P1 S1 H1 T45 ; set fan 1 value. Thermostatic control is turned on

      ; Tools
      M563 P0 D0 H1 F0 ; define tool 0
      G10 P0 X0 Y0 Z0 ; set tool 0 axis offsets
      G10 P0 R0 S0 ; set initial tool 0 active and standby temperatures to 0C

      ; Custom settings are not defined

      ; Miscellaneous
      M575 P1 S1 B57600 ; enable support for PanelDue
      T0 ; select first tool

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      • Vetiundefined
        Veti
        last edited by

        check the 7.5A fuse if its blown using a multimeter

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        • NiklasPundefined
          NiklasP
          last edited by

          Nop the fuse is fine. Just checked. In case if it's blown shouldn't the steppers also not work?

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          • Vetiundefined
            Veti
            last edited by

            just checking, you have updated to firmware version 3.1.1?

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            • NiklasPundefined
              NiklasP
              last edited by

              Yes I did. (FIRMWARE_NAME: RepRapFirmware for Duet 2 WiFi/Ethernet FIRMWARE_VERSION: 3.1.1 ELECTRONICS: Duet WiFi 1.02 or later FIRMWARE_DATE: 2020-05-19b2)

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              • Vetiundefined
                Veti
                last edited by

                i dont see anything wrong in you config. your z settings are redundant but that does not matter.

                also i dont think that the mosfets are both broken.

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                • NiklasPundefined
                  NiklasP
                  last edited by

                  Ok not sure what the error was but it seems to work now. I formated the SD and unpacked the files from the Git into it. Then I installed the update to 3.1.1 again an uploaded a fresh firmware from the fw generator. No idea what went wrong before.

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