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    Fan Error - Inverted

    Scheduled Pinned Locked Moved
    Duet Hardware and wiring
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    • Jman3undefined
      Jman3
      last edited by

      Hello,

      Background: I recently upgraded my Ender 3 pro with a Sprite Pro Extruder and added 5015 blower fans. I have a Duet 3 mini 5+ ethernet and my original hotend worked as expected.

      Problem: While comissioning I noticed that my hotend fan was on at room temp and turned off when the thermostatic control is supposed to turn it on. I messed around with the settings changing it to a non thermostatic control and it seems inverted. When I turn it on its off and when I turn it off its on. I feel like there is something simple that I am missing in my .config but reading through the documentation and troublshooting hasen't yeilded anything. I also searched around on the forum and didn't find a similar post.

      My next plan was just to go from Out6 to Out3 to see if I have a hardware issue.

      Anyone have ideas for what might be happening?

      .config

      ; Configuration file for Duet 3 Mini 5+ (firmware version 3.3)
      ; executed by the firmware on start-up
      ;
      ; generated by RepRapFirmware Configuration Tool v3.3.16 on Tue Nov 14 2023 20:04:52 GMT-0600 (Central Standard Time)
      
      ; General preferences
      G90                                                ; send absolute coordinates...
      M83                                                ; ...but relative extruder moves
      M550 P"My Printer"                                 ; set printer name
      
      ; Network
      M552 P0.0.0.0 S1                                   ; enable network and acquire dynamic address via DHCP
      M586 P0 S1                                         ; enable HTTP
      M586 P1 S0                                         ; disable FTP
      M586 P2 S0                                         ; disable Telnet
      
      ; Drives
      M569 P0.0 S0 D3 V0                                 ; physical drive 0.0 goes backwards, D3 = stealthchop (this works well with low motor torques)
      M569 P0.1 S0 D3 V0                                 ; physical drive 0.1 goes backwards, D3 = stealthchop (this works well with low motor torques)
      M569 P0.2 S1 D3 V0                                 ; physical drive 0.2 goes forwards, D3 = stealthchop (this works well with low motor torques)
      M569 P0.4 S0 D3 V0                                 ; physical drive 0.4 goes backwards, D3 = stealthchop (this works well with low motor torques)
      M584 X0.0 Y0.1 Z0.2 E0.4                           ; set drive mapping
      M350 X16 Y16 Z16 E16 I1                            ; configure microstepping with interpolation
      M92 X80.00 Y80.00 Z400.00 E143.9                  ; set steps per mm
      M566 X900.00 Y900.00 Z60.00 E300.00                ; set maximum instantaneous speed changes (mm/min)
      M203 X6000.00 Y6000.00 Z600.00 E3600.00            ; set maximum speeds (mm/min)
      M201 X500.00 Y500.00 Z200.00 E2500.00              ; set accelerations (mm/s^2)
      M906 X600 Y600 Z600 E900 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 X235 Y235 Z260 S0                             ; set axis maxima
      
      ; Endstops
      M574 X1 S1 P"io5.in"                               ; configure switch-type (e.g. microswitch) endstop for low end on X via pin io5.in
      M574 Y1 S1 P"io6.in"                               ; configure switch-type (e.g. microswitch) endstop for low end on Y via pin io6.in
      M574 Z1 S2                                         ; configure Z-probe endstop for low end on Z
      
      ; Z-Probe
      M950 S0 C"io3.out"                                 ; create servo pin 0 for BLTouch
      M558 P9 C"io3.in" H5 F120 T6000                    ; set Z probe type to bltouch and the dive height + speeds
      G31 P25 X-44 Y-17 Z0.65                           ; set Z probe trigger value, offset and trigger height
      M557 X30:230 Y30:230 S50                           ; define mesh grid
      
      ; Heaters
      M308 S0 P"temp0" Y"thermistor" T98801 B4185        ; configure sensor 0 as thermistor on pin temp0
      M950 H0 C"out0" T0                                 ; create bed heater output on out0 and map it to sensor 0
      M307 H1 R2.641 K0.738:0.011 D4.18 E1.35 S1.00 B0 V23.8     ; disable bang-bang mode for the bed heater and set PWM limit, added Tuning here
      M140 H0                                            ; map heated bed to heater 0
      M143 H0 S120                                       ; set temperature limit for heater 0 to 120C
      M308 S1 P"temp1" Y"thermistor" T98801 B4185        ; configure sensor 1 as thermistor on pin temp1
      M950 H1 C"out1" T1                                 ; create nozzle heater output on out1 and map it to sensor 1
      M307 H0 R0.314 K0.257:0.000 D4.50 E1.35 S1.00 B0           ; disable bang-bang mode for heater  and set PWM limit, added Tuning here
      M143 H1 S260                                       ; set temperature limit for heater 1 to 260C
      
      ; Fans
      M950 F0 C"out5" Q500                               ; create fan 0 on pin out5 and set its frequency
      M106 P0 C"Part Cooling" S0 H-1                     ; set fan 0 name and value. Thermostatic control is turned off
      M950 F1 C"out6" Q500                               ; create fan 1 on pin out6 and set its frequency
      M106 P1 C"Heat Block HotEnd" S1 H1 T45             ; set fan 1 name and value. Thermostatic control is turned on
      
      ; Tools
      M563 P0 S"HotEnd" 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
      M204 P600 T2000				                                ; Set accelerations (mm/s^2) for print and travel moves
      M912 P0 S-13 				                                  ; CPU Temperature calibration
      M572 D0 S0.35				                                  ; Pressure advance
      M207 S6.5 R0.0 F2800 T4800 z0.0                    ; Retraction
      M280 P0 S160				                                   ; Clear any alarms
      M402						                                         ; Retract Pin
      
      ; Miscellaneous
      M501                                               ; load saved parameters from non-volatile memory
      M911 S21 R23 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; set voltage thresholds and actions to run on power loss
      T0                                                 ; select first tool
      
      dc42undefined 1 Reply Last reply Reply Quote 0
      • dc42undefined
        dc42 administrators @Jman3
        last edited by

        @Jman3 is it by any chance a 4-wire fan?

        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

        Jman3undefined 1 Reply Last reply Reply Quote 0
        • Jman3undefined
          Jman3 @dc42
          last edited by

          @dc42 No, it's a 2 wire.

          Jman3undefined 1 Reply Last reply Reply Quote 0
          • Jman3undefined
            Jman3 @Jman3
            last edited by Jman3

            So did this IC burnout?

            my board
            1000007985.jpg

            Documented picture
            7ab138a1-febc-42b2-a99a-e4fbe1a3ba0c-image.png

            Jman3undefined 1 Reply Last reply Reply Quote 0
            • Jman3undefined
              Jman3 @Jman3
              last edited by

              It turns out I must have burned up my Out6 while poking around with a multimeter. I switched to Out3 and the hotend fan thermostatic control is working as it should now.

              1 Reply Last reply Reply Quote 0
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