Solved Bed thermistor setup
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Hi, I just setup my Duet wifi 2 with the 3.2.2 firmware on an ender3. Probably overkill but I like to tinker lol. I checked with M115 to confirm. My hotend temp reads fine but the bed temp says 273.1. From what I've read that means I have an open circuit. I switched the hotend thermistor to the bed pins and hooked up a new thermistor as well to see if it was a bad thermistor but no luck. This leads me to believe it's a config issue. I've used this board before on the 2. Xx firmware without issue.so I don't think it's the duet itself. Here is my config.g. any help would be appreciated as I'm going crazy trying different things in config.g.
; General preferences G90 ; send absolute coordinates... M83 ; ...but relative extruder moves M550 P"3dprinter" ; set printer name ;M918 P1 E4 F2000000 ; configure direct-connect display ; 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 backwards M569 P1 S1 ; physical drive 1 goes backwards M569 P2 S0 ; physical drive 2 goes forwards M569 P3 S0 ; physical drive 3 goes backwards M584 X0 Y1 Z2 E3 ; set drive mapping M350 X16 Y16 Z16 E16 I1 ; configure microstepping with interpolation M92 X80.00 Y80.00 Z400.00 E93.00 ; set steps per mm M566 X1200.00 Y1200.00 Z24.00 E300.00 ; set maximum instantaneous speed changes (mm/min) M203 X9000.00 Y9000.00 Z180.00 E6000.00 ; set maximum speeds (mm/min) M201 X500.00 Y500.00 Z100.00 E5000.00 ; set accelerations (mm/s^2) M906 X800 Y800 Z800 E1000 I50 ; 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"xstop" ; X min active high endstop switch M574 Y1 S1 P"ystop" ; Y min active high endstop switch M574 Z1 S2 ; set endstops controlled by probe ; Z-Probe M574 Z1 S2 ; Set endstops controlled by probe M307 H3 A-1 C-1 D-1 ; Disable heater on PWM channel for BLTouch M558 P9 C"^zprobe.in" H5 F120 T6000 ; probe type and pin for bltouch M950 S0 C"exp.heater3" ; assign GPIO port 8 to heater3 on expansion connector, servo mode G31 P500 X-48 Y-2 Z1.723 ; set Z probe trigger value, offset and trigger height M376 H10 ; set fade height G29 s1 P"heightmap.cvs" ; load the mesh ; Heaters ;Bed ;M308 S0 P"bedtemp" Y"thermistor" T100000 ;B4267 C7.06e-8 ; 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 ;M143 H0 S120 ; set temperature limit for heater 0 to 130C ;M307 H0 B0 S1.00 ; disable bang-bang mode for the bed heater and set PWM limit ;M140 H0 ;hotend ;M308 S1 P"e0temp" Y"thermistor" T100000 B4138 A"Extrdr" ; 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 ;M143 H1 S280 ; set temperature limit for heater 1 to 280C ;M307 H1 B0 S1.00 ; disable bang-bang mode for the nozzle heater and set PWM limit ;M307 H1 A417.9 C139.9 D3.9 S1.00 V24.1 B0 ; PID Auto tune values M308 S0 P"bedtemp" Y"thermistor" T100000 B4267 C7.06e-8 ; 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 M143 H0 S130 ; set temperature limit for heater 0 to 130C 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 M308 S1 P"e0temp" Y"thermistor" T100000 B4267 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 M143 H1 S275 ; set temperature limit for heater 1 to 275C M307 H1 B0 S1.00 ; Sensors for thermal fans M308 S3 Y"mcu-temp" A"MCUTemp" ; configure sensor 3 as thermistor on pin mcu-temp for Duet 2 ; Fans M950 F0 C"fan0" Q65535 ; create fan 0 on pin fan0 and set its frequency M106 P0 C"Part" S0 H-1 ; set fan 0 name and value. Thermostatic control is turned off M950 F1 C"fan1" Q65535 ; create fan 1 on pin fan1 and set its frequency M106 P1 C"Extruder" S1 H1 T60 ; set fan 1 name and value. Thermostatic control is turned on ; Thermal fan on drivers sensor ;M308 S2 Y"drivers" A"Drivers" ; configure sensor 2 as temperature warning and overheat flags on the TMC2660 on Duet 2 ;M950 F2 C"fan2" Q100 ; create fan 2 on pin fan2 and set its frequency ;M106 P2 H2:4 L0.0 X0.05 B0.5 T45:55 C"DrvTemp" ; set fan 2 value and connect to sensor 2. Turn on at 50% if Driver temp reaches 45C, increase to full speed gradually as the temp rises to 55C ; Tools ;M563 P0 S"Hotend" D0 H1 F0:1 ; 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 M563 P0 D0 H1 F0 ; define tool 0 G10 P0 X0 Y0 Z0 ; set tool 0 axis offsets G10 P0 R0 S0 ; Custom settings are not defined ; Miscellaneous M501 ; load saved parameters from non-volatile memory M911 S10 R23 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; set voltage thresholds and actions to run on power loss -
Can you provide the results of sending M122 and M98 P"config.g" please?
Are you using the stock ender 3 thermistor?
Where exactly are you connecting the thermistor?
Try copy and paste this section to replace your heaters section.
; 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 S150 ; set temperature limit for heater 0 to 150C M308 S1 P"e0temp" Y"thermistor" T100000 B4092 ; 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 S275 ; set temperature limit for heater 1 to 275C -
@phaedrux
5/14/2021, 5:50:39 PM M122
=== Diagnostics ===
RepRapFirmware for Duet 2 WiFi/Ethernet version 3.2.2 running on Duet WiFi 1.02 or later
Board ID: 08DGM-917NK-F2MS4-7J1DD-3S86R-1ZT4F
Used output buffers: 3 of 24 (16 max)
=== RTOS ===
Static ram: 23460
Dynamic ram: 73508 of which 24 recycled
Never used RAM 15088, free system stack 191 words
Tasks: NETWORK(ready,237) HEAT(blocked,308) MAIN(running,379) IDLE(ready,20)
Owned mutexes: WiFi(NETWORK)
=== Platform ===
Last reset 00:00:49 ago, cause: software
Last software reset at 2021-05-14 17:49, reason: User, GCodes spinning, available RAM 15088, slot 0
Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0041f000 BFAR 0xe000ed38 SP 0x00000000 Task MAIN Freestk 0 n/a
Error status: 0x00
Aux0 errors 0,0,0
MCU temperature: min 27.8, current 28.2, max 28.8
Supply voltage: min 24.0, current 24.1, max 24.2, under voltage events: 0, over voltage events: 0, power good: yes
Driver 0: position 0, standstill, SG min/max not available
Driver 1: position 0, standstill, SG min/max not available
Driver 2: position 0, standstill, SG min/max not available
Driver 3: position 0, standstill, SG min/max not available
Driver 4: position 0, standstill, SG min/max not available
Driver 5: position 0
Driver 6: position 0
Driver 7: position 0
Driver 8: position 0
Driver 9: position 0
Driver 10: position 0
Driver 11: position 0
Date/time: 2021-05-14 17:50:38
Cache data hit count 59241505
Slowest loop: 9.48ms; fastest: 0.21ms
I2C nak errors 0, send timeouts 0, receive timeouts 0, finishTimeouts 0, resets 0
=== Storage ===
Free file entries: 10
SD card 0 detected, interface speed: 20.0MBytes/sec
SD card longest read time 1.2ms, 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 -1 -1, chamberHeaters = -1 -1 -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
Daemon is idle in state(s) 0
Autopause is idle in state(s) 0
Code queue is empty.
=== Network ===
Slowest loop: 20.68ms; fastest: 0.00ms
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 0
WiFi firmware version 1.23
WiFi MAC address 84:f3:eb:83:4a:93
WiFi Vcc 3.36, reset reason Power up
WiFi flash size 4194304, free heap 23704
WiFi IP address 192.168.1.101
WiFi signal strength -62dBm, mode none, reconnections 0, sleep mode modem
Clock register ffffffff
Socket states: 0 0 0 0 0 0 0 0
And
5/14/2021, 5:53:15 PM M98 P"config.g"
HTTP is enabled on port 80
FTP is disabled
TELNET is disabled
Error: Heater 3 not found
Error: Height map file 0:/sys/heightmap.cvs not foundI replaced the heater code with yours and it's the same.
It's plugged into e1temp - WiFi -
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Could it be something with my bltouch? I think that's where that heater3 errors is coming from.
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@ross said in Bed thermistor setup:
M307 H3 A-1 C-1 D-1 ; Disable heater on PWM channel for BLTouch
Remove that line. Not needed in RRF3
@ross said in Bed thermistor setup:
G29 s1 P"heightmap.cvs" ; load the mesh
Also remove that. Best not to load the heightmap until after the Z axis has been homed with the probe.
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@ross said in Bed thermistor setup:
WiFi firmware version 1.23
Also looks like the wifi server wasn't updated. I suggest you upload the full zip file again to the system tab in DWC just to make sure everything is up to date. Don't extract it first, just upload the whole file.
https://github.com/Duet3D/RepRapFirmware/releases/download/3.2.2/Duet2and3Firmware-3.2.2.zip
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@phaedrux ok I did that but bed thermistor still says -273.1. And thanks for the help.
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If you swap the bed thermistor and the hotend thermistor does the -273 follow the thermistor or stay with the port?
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@phaedrux so if I plug either temp probe into e0 they work but either on e1 I get the -273.1
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@ross e1temp is not defined. e0temp and bedtemp are. bedtemp pins are here:
Ian
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@droftarts well look at that! If you plug it in the correct place it works, who would have thought lol.
Thank you for wasting your time on me. -
@phaedrux said in Bed thermistor setup:
Where exactly are you connecting the thermistor?
LOL glad you figured it out.
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@phaedrux he did say e1temp in the post after you asked that! Guess we all missed it for a while!
Ian
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@droftarts yea I had it in the e1 port not realizing it was for a second extruder. I guess that's why it's labeled "E" for extruder lol. I haven't used the printer for a while and messed up the connection. It's all good now doing an auto tune pid as we speak. Thanks again guys.
