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    Duet mini+ failing to heat hotend

    Scheduled Pinned Locked Moved Solved
    Tuning and tweaking
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    • NightLonk42undefined
      NightLonk42
      last edited by NightLonk42

      Running Duet Mini5+ with toolboard 1.1

      Ran a PID test and put the response into my config file. PID runs perfectly fine with no issues whatsoever.

      Hotend will start heating, then after a few seconds stop. The selected tool on paneldue will go from red to blank when it turns off, and cannot select it again unless power cycled. Only error that I can see is the heater just says fault.

      It will continue to heat the bed while this happens and start the print unheated unless stopped manually.

      If I power cycle right when it happens, let it heat up a bit, and repeat until it gets to the desired temp, it will stay there fine.

      Duet Web Control 3.3.0
      Board: Duet 3 Mini 5+ (Mini5plus)
      Firmware: RepRapFirmware for Duet 3 Mini 5+ 3.3 (2021-06-15)
      Duet WiFi Server Version: 1.26
      Duet TOOL1LC firmware version 3.3 (2021-06-15 16:12:58)

      ; Configuration file for Duet 3 Mini 5+
      ; executed by the firmware on start-up
      
      
      ; General preferences
      G90                                                   ; send absolute coordinates...
      M83                                                   ; ...but relative extruder moves
      M550 P"Dak3D"                                         ; set printer name
      
      ; Network
      M552 S1                                               ; enable network
      M586 P0 S1                                            ; enable HTTP
      M586 P1 S0                                            ; disable FTP
      M586 P2 S0                                            ; disable Telnet
      
      ; Wait for the Tool Board
      G4 S2  											   	  ;wait for expansion boards to start
      
      ; Drives
      M569 P0.0 S0                                          ; physical drive 0.0 goes backwards
      M569 P0.1 S0                                          ; physical drive 0.1 goes backwards
      M569 P0.2 S1                                          ; physical drive 0.2 goes forwards
      M569 P121.0 S0                                        ; physical drive 0.3 goes backwards
      M584 X0.0 Y0.1 Z0.2 E121.0                            ; set drive mapping
      M350 X16 Y16 Z16 E16 I1                               ; configure microstepping with interpolation
      M92 X80 Y80 Z3200 E392.67                             ; set steps per mm
      M566 X1200.00 Y1200.00 Z24.00 E8000.00                ; set maximum instantaneous speed changes (mm/min)
      M203 X9000.00 Y9000.00 Z400.00 E20000.00               ; set maximum speeds (mm/min)
      M201 X500.00 Y500.00 Z100.00 E6000.00                 ; set accelerations (mm/s^2)
      M906 X800 Y800 Z1000 E1000 I40                        ; 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 X196 Y205 Z300 S0                                ; set axis maxima
      
      ; Endstops
      M574 X1 S1 P"io5.in"                                  ; configure active-high endstop for low end on X via pin io5.in
      M574 Y1 S1 P"io6.in"                                  ; configure active-high 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"121.io0.out"                        	      ; create servo pin 0 for BLTouch
      M558 P9 C"^121.io0.in" H5 F120 T6000        	      ; set Z probe type to bltouch and the dive height + speeds
      G31 P500 X40 Y1 Z1.5                      	 	      ; set Z probe trigger value, offset and trigger height
      M557 X15:196 Y15:205 S20                 	          ; 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 H0 B0 R0.374 C501.7 D18.02 S1.00 V28.0           ; disable bang-bang mode for the bed heater and set PWM limit
      M140 H0                                               ; map heated bed to heater 0
      M143 H0 S130                                          ; set temperature limit for heater 0 to 130C
      M308 S1 P"121.temp0" Y"thermistor" T100000 B4092 	  ; configure sensor 1 as thermistor on pin 121.temp0
      M950 H1 C"121.out0" T1                       	      ; create nozzle heater output on 121.out0 and map it to sensor 1
      M307 H1 B0 R3.359 C164.2:63.6 D6.23 S1.00 V28.3      ; disable bang-bang mode for Nozzle Heater and set PWM limit
      M143 H1 S275                                	      ; set temperature limit for heater 1 to 275C
      
      ; Fans
      M950 F0 C"121.out1" Q500                              ; create fan 0 on pin out3 and set its frequency
      M106 P0 C"Print Fan" S0 H-1                           ; set fan 0 name and value. Thermostatic control is turned off
      M950 F1 C"121.out2" Q500                              ; create fan 1 on pin out6 and set its frequency
      M106 P1 C"Heatsink Fan" S1 H1 T45                     ; set fan 1 name and value. Thermostatic control is turned on
      M950 F2 C"out6" Q500                                  ; create fan 2 on pin out6 and set its frequency
      M106 P2 C"CPU Fan" S1 H-1 		                      ; set fan 2 name and value. Thermostatic control is turned off
      
      ;M950 P0 C"out6"                                       ; Create a GPIO pin to provide power to the toolboard
      ;M42 P0 S1                                             ; Turn that GPIO pin on at boot
      
      ; Tools
      M563 P0 S"Hemera" D0 H1 F0:2                	      ; 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
      
      ; Duet3D Laser Sensor
      M591 D0 P5 C"121.io1.in" R40:120 E3.0 S0 			  ; Duet3D laser sensor for extruder drive 0, connected to IO1 IN, tolerance 40 to 120%, 3mm comparison length, disabled
      
      ;Accelerometer
      ;M955 I10 P121.0          							  ; Accelerometer 121:0 with orientation 10 samples at 1344Hz with 12-bit resolution
      M955 I10 P121.0 S1000 R12
      
      ; Miscellaneous
      M575 P1 S1 B57600                                     ; enable support for PanelDue
      T0                                                    ; select first tool```
      NightLonk42undefined 1 Reply Last reply Reply Quote 0
      • NightLonk42undefined
        NightLonk42 @NightLonk42
        last edited by

        @nightlonk42 To add onto this, there is no message in the console explaining the fault.
        If I slowly raise the temp the fault doesn't occur (so like, start at room temp, go to 50, then 80, then 120, etc etc) so it seems to be some sort of a PID issue
        I just ran another one, it completed fine and after changing the parameters in my config file and the same issue happens

        o_lampeundefined 1 Reply Last reply Reply Quote 0
        • o_lampeundefined
          o_lampe @NightLonk42
          last edited by

          @nightlonk42
          You might have a config-override in your /sys folder, which overwrites the PID settings of config.g.
          The best way to store PID results, is to send M500 after the tuning and also add a M501 at the end of config.g to call the override at startup.

          NightLonk42undefined 1 Reply Last reply Reply Quote 1
          • NightLonk42undefined
            NightLonk42 @o_lampe
            last edited by

            @o_lampe said in Duet mini+ failing to heat hotend:

            @nightlonk42
            You might have a config-override in your /sys folder, which overwrites the PID settings of config.g.
            The best way to store PID results, is to send M500 after the tuning and also add a M501 at the end of config.g to call the override at startup.

            I did not have an override but I tried this and am still getting the fault. Only thing I can think of is that I WAS using a toolboard 1.0 but upgraded to the 1.1 (built in accell) and this started happening. I also updated to version 3.3 while upgrading the toolboard... Oddest thing to me is that theres zero console errors, just faults when heating up from too far away from the target temp.

            I ran another PID and inputted the results, and verified with M307 H1 and they are exactly what I put in, even after power cycling

            M307 H1
            Heater 1 model: heating rate 3.255, cooling time constant 211.5/80.3, dead time 6.31, max PWM 1.00, calibration voltage 28.3, mode PID
            Computed PID parameters: setpoint change: P8.7, I0.238, D38.4, load change: P8.7, I0.583, D38.4
            

            And just in case.....

            M122
            === Diagnostics ===
            RepRapFirmware for Duet 3 Mini 5+ version 3.3 (2021-06-15 21:46:11) running on Duet 3 Mini5plus WiFi (standalone mode)
            Board ID: LYWS8-K296U-D65J0-40KM8-2503Z-HQWMB
            Used output buffers: 10 of 40 (32 max)
            === RTOS ===
            Static ram: 102724
            Dynamic ram: 106704 of which 16 recycled
            Never used RAM 34260, free system stack 198 words
            Tasks: NETWORK(ready,15.3%,240) HEAT(delaying,0.0%,379) Move(notifyWait,0.1%,338) CanReceiv(notifyWait,0.0%,798) CanSender(notifyWait,0.0%,371) CanClock(delaying,0.0%,347) TMC(notifyWait,0.7%,115) MAIN(running,83.1%,426) IDLE(ready,0.0%,29) AIN(delaying,0.8%,264), total 100.0%
            Owned mutexes: WiFi(NETWORK)
            === Platform ===
            Last reset 00:01:09 ago, cause: software
            Last software reset at 2021-07-04 03:12, reason: User, GCodes spinning, available RAM 34260, slot 0
            Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x00000000 BFAR 0xe000ed38 SP 0x00000000 Task MAIN Freestk 0 n/a
            Error status: 0x00
            Aux0 errors 0,0,0
            MCU revision 3, ADC conversions started 69179, completed 69178, timed out 0, errs 0
            Step timer max interval 957
            MCU temperature: min 27.3, current 27.3, max 28.7
            Supply voltage: min 27.9, current 28.0, max 28.1, under voltage events: 0, over voltage events: 0, power good: yes
            Heap OK, handles allocated/used 0/0, heap memory allocated/used/recyclable 0/0/0, gc cycles 0
            Driver 0: position 0, standstill, SG min/max 2/2, read errors 0, write errors 0, ifcnt 50, reads 2780, writes 0, timeouts 0, DMA errors 0
            Driver 1: position 0, standstill, SG min/max 2/2, read errors 0, write errors 0, ifcnt 50, reads 2779, writes 0, timeouts 0, DMA errors 0
            Driver 2: position 0, standstill, SG min/max 2/2, read errors 0, write errors 0, ifcnt 50, reads 2780, writes 0, timeouts 0, DMA errors 0
            Driver 3: position 0, standstill, SG min/max 0/0, read errors 0, write errors 0, ifcnt 39, reads 2780, writes 0, timeouts 0, DMA errors 0
            Driver 4: position 0, standstill, SG min/max 0/0, read errors 0, write errors 0, ifcnt 39, reads 2780, writes 0, timeouts 0, DMA errors 0
            Driver 5: position 0, assumed not present
            Driver 6: position 0, assumed not present
            Date/time: 2021-07-04 03:14:06
            Cache data hit count 129211930
            Slowest loop: 4.26ms; fastest: 0.12ms
            === Storage ===
            Free file entries: 10
            SD card 0 detected, interface speed: 22.5MBytes/sec
            SD card longest read time 3.2ms, write time 0.0ms, max retries 0
            === Move ===
            DMs created 83, maxWait 0ms, bed compensation in use: none, comp offset 0.000
            === MainDDARing ===
            Scheduled moves 0, completed moves 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1
            === AuxDDARing ===
            Scheduled moves 0, completed moves 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1
            === Heat ===
            Bed heaters = 0 -1, chamberHeaters = -1 -1
            === GCodes ===
            Segments left: 0
            Movement lock held by null
            HTTP is idle in state(s) 0
            Telnet is idle in state(s) 0
            File is idle in state(s) 0
            USB is idle in state(s) 0
            Aux is idle in state(s) 0
            Trigger is idle in state(s) 0
            Queue is idle in state(s) 0
            LCD is idle in state(s) 0
            SBC is idle in state(s) 0
            Daemon is idle in state(s) 0
            Aux2 is idle in state(s) 0
            Autopause is idle in state(s) 0
            Code queue is empty.
            === Filament sensors ===
            Extruder 0: no data received
            === CAN ===
            Messages queued 476, received 660, lost 0, longest wait 1ms for reply type 6013, peak Tx sync delay 3, free buffers 17 (min 16), ts 264/264/0
            Tx timeouts 0,0,0,0,0,0
            === Network ===
            Slowest loop: 201.11ms; fastest: 0.06ms
            Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0), 0 sessions
            HTTP sessions: 1 of 8
            - WiFi -
            Network state is active
            WiFi module is connected to access point 
            Failed messages: pending 0, notready 0, noresp 1
            WiFi firmware version 1.26
            WiFi MAC address f0:08:d1:02:b5:c4
            WiFi Vcc 3.34, reset reason Power up
            WiFi flash size 2097152, free heap 24720
            WiFi IP address 192.168.1.65
            WiFi signal strength -50dBm, mode 802.11n, reconnections 0, sleep mode modem
            Clock register 00002002
            Socket states: 0 0 0 0 0 0 0 0```
            jay_s_ukundefined 1 Reply Last reply Reply Quote 0
            • jay_s_ukundefined
              jay_s_uk @NightLonk42
              last edited by

              @nightlonk42 can you check the firmware on the toolboard as well?
              M115 B121

              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

              NightLonk42undefined 1 Reply Last reply Reply Quote 0
              • NightLonk42undefined
                NightLonk42 @jay_s_uk
                last edited by

                @jay_s_uk said in Duet mini+ failing to heat hotend:

                M115 B121

                Sure thing!

                7/4/2021, 3:43:07 AM	M115 B121
                Duet TOOL1LC firmware version 3.3 (2021-06-15 16:12:58)
                
                1 Reply Last reply Reply Quote 0
                • Phaedruxundefined
                  Phaedrux Moderator
                  last edited by Phaedrux

                  Can you use M500 to save the PID results and then post your config-override.g so we can see what values it has saved?

                  What command are you using to PID tune?

                  Z-Bot CoreXY Build | Thingiverse Profile

                  NightLonk42undefined 1 Reply Last reply Reply Quote 0
                  • NightLonk42undefined
                    NightLonk42 @Phaedrux
                    last edited by NightLonk42

                    @phaedrux

                    M303 T0 S205 is what I'm using for the hotend.

                    I wiped the override, ran another PID, saved the values in config file, restarted the board, then did a M500.

                    [19_1625425463232_tpre0.g](Uploading 100%) [18_1625425463232_tpost0.g](Uploading 100%) [17_1625425463232_tfree0.g](Uploading 100%) [16_1625425463231_stop.g](Uploading 100%) [15_1625425463231_sleep.g](Uploading 100%) [14_1625425463231_retractprobe.g](Uploading 100%) [13_1625425463231_resume.g](Uploading 100%) [12_1625425463230_pause.g](Uploading 100%) [11_1625425463230_homez.g](Uploading 100%) [10_1625425463230_homey.g](Uploading 100%) [9_1625425463230_homex.g](Uploading 100%) [8_1625425463230_homeall.g](Uploading 100%) [7_1625425463229_heightmap.csv](Uploading 100%) [6_1625425463229_dwc-settings.json](Uploading 100%) [5_1625425463229_DuetWiFiServer.bin](Uploading 100%) [4_1625425463229_deployprobe.g](Uploading 100%) [3_1625425463228_config-override.g](Uploading 100%) [2_1625425463228_config.g.bak](Uploading 100%) [1_1625425463228_config.g](Uploading 100%) [0_1625425463228_bed.g](Uploading 100%)

                    ; config-override.g file generated in response to M500 at 2021-07-04 14:58
                    ; This is a system-generated file - do not edit
                    ; Heater model parameters
                    M307 H0 R0.374 C501.700:501.700 D18.02 S1.00 V28.0 B0 I0
                    M307 H1 R3.255 C211.500:80.300 D6.31 S1.00 V28.3 B0 I0
                    ; Workplace coordinates
                    G10 L2 P1 X0.00 Y0.00 Z0.00
                    G10 L2 P2 X0.00 Y0.00 Z0.00
                    G10 L2 P3 X0.00 Y0.00 Z0.00
                    G10 L2 P4 X0.00 Y0.00 Z0.00
                    G10 L2 P5 X0.00 Y0.00 Z0.00
                    G10 L2 P6 X0.00 Y0.00 Z0.00
                    G10 L2 P7 X0.00 Y0.00 Z0.00
                    G10 L2 P8 X0.00 Y0.00 Z0.00
                    G10 L2 P9 X0.00 Y0.00 Z0.00
                    Phaedruxundefined 1 Reply Last reply Reply Quote 1
                    • Phaedruxundefined
                      Phaedrux Moderator
                      last edited by

                      @nightlonk42 said in Duet mini+ failing to heat hotend:

                      I wiped the override, ran another PID, saved the values in config file, restarted the board, then did a M500.

                      You must send M500 immediately after the PID tuning completed, not after restarting the board.

                      Z-Bot CoreXY Build | Thingiverse Profile

                      NightLonk42undefined 1 Reply Last reply Reply Quote 0
                      • NightLonk42undefined
                        NightLonk42 @Phaedrux
                        last edited by

                        @phaedrux said in Duet mini+ failing to heat hotend:

                        @nightlonk42 said in Duet mini+ failing to heat hotend:

                        I wiped the override, ran another PID, saved the values in config file, restarted the board, then did a M500.

                        You must send M500 immediately after the PID tuning completed, not after restarting the board.

                        I'll try that. One moment

                        (Sorry about the weirdness on the post above. I was trying to upload all the files and it marked it as spam and won't let me edit it anymore)

                        1 Reply Last reply Reply Quote 1
                        • Phaedruxundefined
                          Phaedrux Moderator @NightLonk42
                          last edited by

                          @nightlonk42 said in Duet mini+ failing to heat hotend:

                          [5_1625425463229_DuetWiFiServer.bin]

                          It probably didn't like the bin file either.

                          Z-Bot CoreXY Build | Thingiverse Profile

                          NightLonk42undefined 1 Reply Last reply Reply Quote 1
                          • NightLonk42undefined
                            NightLonk42 @Phaedrux
                            last edited by

                            @phaedrux

                            Tuning complete and M500 put in right after. I'll let it cool off and try again.

                            I enabled M929 as well to see if it catches anything. If nothing shows, and if it's still happening, I'll put it into debugging (M111) and see if I can catch what's happening.

                            Thank you so much for your help so far! Very much appreciated!

                            I'll post when I have new results 🙂

                            New override:

                            ; config-override.g file generated in response to M500 at 2021-07-04 15:16
                            ; This is a system-generated file - do not edit
                            ; Heater model parameters
                            M307 H0 R0.374 C501.700:501.700 D18.02 S1.00 V28.0 B0 I0
                            M307 H1 R3.254 C281.751:107.008 D6.43 S1.00 V28.3 B0 I0
                            ; Workplace coordinates
                            G10 L2 P1 X0.00 Y0.00 Z0.00
                            G10 L2 P2 X0.00 Y0.00 Z0.00
                            G10 L2 P3 X0.00 Y0.00 Z0.00
                            G10 L2 P4 X0.00 Y0.00 Z0.00
                            G10 L2 P5 X0.00 Y0.00 Z0.00
                            G10 L2 P6 X0.00 Y0.00 Z0.00
                            G10 L2 P7 X0.00 Y0.00 Z0.00
                            G10 L2 P8 X0.00 Y0.00 Z0.00
                            G10 L2 P9 X0.00 Y0.00 Z0.00
                            
                            
                            NightLonk42undefined 1 Reply Last reply Reply Quote 0
                            • NightLonk42undefined
                              NightLonk42 @NightLonk42
                              last edited by NightLonk42

                              @nightlonk42

                              Heater still faulting. Event log not giving any info. I'll hardwire into it and run debugging to see if I can catch anything.

                              Only other thing I can think of is the board is bad somehow or it's an issue with 3.3. If I can't catch anything hooked directly in I'll try to downgrade everything to 3.2.2

                              power up + 00:00:01 [info] Event logging started at level debug
                              power up + 00:00:01 [info] Running: Duet 3 Mini5plus WiFi: 3.3 (2021-06-15 21:46:11)
                              power up + 00:00:01 [warn] Warning: Heater 0 appears to be over-powered. If left on at full power, its temperature is predicted to reach 212C
                              power up + 00:00:01 [warn] Warning: Heater 1 appears to be over-powered. If left on at full power, its temperature is predicted to reach 941C
                              power up + 00:00:01 [info] G10 L2 P1 X0.00 Y0.00 Z0.00
                              power up + 00:00:01 [info] G10 L2 P2 X0.00 Y0.00 Z0.00
                              power up + 00:00:01 [info] G10 L2 P3 X0.00 Y0.00 Z0.00
                              power up + 00:00:01 [info] G10 L2 P4 X0.00 Y0.00 Z0.00
                              power up + 00:00:01 [info] G10 L2 P5 X0.00 Y0.00 Z0.00
                              power up + 00:00:01 [info] G10 L2 P6 X0.00 Y0.00 Z0.00
                              power up + 00:00:01 [info] G10 L2 P7 X0.00 Y0.00 Z0.00
                              power up + 00:00:01 [info] G10 L2 P8 X0.00 Y0.00 Z0.00
                              power up + 00:00:01 [info] G10 L2 P9 X0.00 Y0.00 Z0.00
                              power up + 00:00:01 [debug] Done!
                              power up + 00:00:01 [debug] RepRapFirmware for Duet 3 Mini 5+ is up and running.
                              power up + 00:00:01 [warn] WiFi module started
                              power up + 00:00:08 [warn] WiFi module is connected to access point AdventurousPanda, IP address 192.168.1.65
                              power up + 00:00:08 [warn] HTTP client 192.168.1.115 login succeeded
                              2021-07-04 15:26:00 [warn] Date and time set at power up + 00:00:08
                              2021-07-04 15:26:52 [info] G10 P0 S220
                              
                              NightLonk42undefined 1 Reply Last reply Reply Quote 0
                              • NightLonk42undefined
                                NightLonk42 @NightLonk42
                                last edited by

                                @nightlonk42

                                Downgraded to 3.2.2, same thing.

                                Ran debugging to USB with all settings enabled, nothing shows up when it faults

                                1 Reply Last reply Reply Quote 0
                                • Phaedruxundefined
                                  Phaedrux Moderator
                                  last edited by Phaedrux

                                  @nightlonk42 said in Duet mini+ failing to heat hotend:

                                  M563 P0 S"Hemera" D0 H1 F0:2

                                  Are fans 0 and 2 both part cooling fans? Your fan definition says that fan2 is a cpu fan. So maybe you should change F0:2 to just F0.

                                  Can you try tuning the hotend with M303 H1 S205 instead of T0?

                                  @nightlonk42 said in Duet mini+ failing to heat hotend:

                                  Supply voltage: min 27.9, current 28.0, max 28.1,

                                  Also I think you may be over volting your heaters

                                  Z-Bot CoreXY Build | Thingiverse Profile

                                  NightLonk42undefined 2 Replies Last reply Reply Quote 1
                                  • NightLonk42undefined
                                    NightLonk42 @Phaedrux
                                    last edited by

                                    @phaedrux said in Duet mini+ failing to heat hotend:

                                    @nightlonk42 said in Duet mini+ failing to heat hotend:

                                    M563 P0 S"Hemera" D0 H1 F0:2

                                    Are fans 0 and 2 both part cooling fans? Your fan definition says that fan2 is a cpu fan. So maybe you should change F0:2 to just F0.

                                    Can you try tuning the hotend with M303 H1 S205 instead of T0?

                                    @nightlonk42 said in Duet mini+ failing to heat hotend:

                                    Supply voltage: min 27.9, current 28.0, max 28.1,

                                    Also I think you may be over volting your heaters

                                    Made the CPU fan change, lowered voltage back down to 24v and testing again using H1.

                                    Will update with results 🙂

                                    1 Reply Last reply Reply Quote 0
                                    • NightLonk42undefined
                                      NightLonk42 @Phaedrux
                                      last edited by

                                      @phaedrux said in Duet mini+ failing to heat hotend:

                                      @nightlonk42 said in Duet mini+ failing to heat hotend:

                                      M563 P0 S"Hemera" D0 H1 F0:2

                                      Are fans 0 and 2 both part cooling fans? Your fan definition says that fan2 is a cpu fan. So maybe you should change F0:2 to just F0.

                                      Can you try tuning the hotend with M303 H1 S205 instead of T0?

                                      @nightlonk42 said in Duet mini+ failing to heat hotend:

                                      Supply voltage: min 27.9, current 28.0, max 28.1,

                                      Also I think you may be over volting your heaters

                                      That did it! I'm not sure if it was the CPU fan setting or running it with H1 but it's working as expected now.

                                      Thank you so much! This was driving me crazy for days now!!!

                                      1 Reply Last reply Reply Quote 1
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