Issue with the thermistors issues
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can you post the output of m122 to make sure you are on firmware version 3.1.1
also your thermistor setting is incorrect. B4138 is the default. look up the correct value in your thermistor documentation.
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You've flipped bed and nozzle in the configurator. For simplicities sake stick to the default of having heater0 be the bed heater and extruders after.
Please copy and paste the text of config.g.
Can you show a photo of your wiring?
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@Veti said in Issue with the thermistors issues:
4138
I don't have any documentation for my thermistors, most of them I bought years ago, they do work with the setting I had, that is not the issue. And yes I'm using version 3.1.1.
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@amostol said in Issue with the thermistors issues:
they do work with the setting I had
you will just be operating at the wrong temperature.
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@Phaedrux Here is the full text file after flipping the hotend and bed to default as you suggested.
; Configuration file for Duet WiFi (firmware version 3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.2.0 on Mon Dec 28 2020 13:15:15 GMT-0800 (Pacific Standard Time); 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 P8 S1 ; physical drive 8 goes forwards
M569 P9 S1 ; physical drive 9 goes forwards
M569 P2 S1 ; physical drive 2 goes forwards
M569 P3 S1 ; physical drive 3 goes forwards
M584 X8 Y9 Z2 E3 ; set drive mapping
M350 X16 Y16 Z16 E16 I1 ; configure microstepping with interpolation
M92 X80.00 Y80.00 Z400.00 E420.00 ; set steps per mm
M566 X900.00 Y900.00 Z12.00 E120.00 ; set maximum instantaneous speed changes (mm/min)
M203 X6000.00 Y6000.00 Z180.00 E1200.00 ; set maximum speeds (mm/min)
M201 X500.00 Y500.00 Z20.00 E250.00 ; set accelerations (mm/s^2)
M906 X800 Y800 Z1800 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 X485 Y485 Z485 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 S1 P"!zstop" ; configure active-high endstop for low end on Z via pin !zstop; Z-Probe
M558 P1 C"zprobe.in" H5 F120 T6000 ; set Z probe type to unmodulated and the dive height + speeds
G31 P500 X0 Y0 Z2.5 ; set Z probe trigger value, offset and trigger height
M557 X15:215 Y15:195 S20 ; define mesh grid; Heaters
M308 S0 P"e0temp" Y"thermistor" T100000 B4138 ; configure sensor 0 as thermistor on pin e0temp
M950 H0 C"e0heat" T0 ; create bed heater output on e0heat 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"e1temp" Y"thermistor" T100000 B4138 ; configure sensor 1 as thermistor on pin e1temp
M950 H1 C"e1heat" T1 ; create nozzle heater output on e1heat and map it to sensor 1
M307 H1 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit
M143 H1 S280 ; set temperature limit for heater 1 to 280C; Fans
M950 F0 C"fan0" Q500 ; create fan 0 on pin fan0 and set its frequency
M106 P0 S1 H T45 ; set fan 0 value. Thermostatic control is turned on
M950 F1 C"fan1" Q500 ; create fan 1 on pin fan1 and set its frequency
M106 P1 S1 H-1 ; set fan 1 value. Thermostatic control is turned off; Tools
M563 P0 D0 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
And here is a screen shoot of what it is doing, it is no longer read the bed and hotend temperatures as the same, instead it is only reading the one for the bed and the one for the hotend just says N/A. And the heatbed works it comes on.
Also one time when I plugged in the thermistor for the hotend, the wifi on the board shutoff, the blue light went out and I lost connection with my pc, so I unplugged it again, and it came back on. So I plugged it in again, put the 2nd time it did nothing.
Here is a photo of the board, I don't have the hotend or bed plugged in here.
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@Veti The temperature seems to be right, when they work they show the same temperature as my other printers in the same room.
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Can you unplug either of the thermistors and have the board continue to report a temperature for the now-unplugged thermistor?
What I'm thinking is that somehow that the input is bridged. Doesn't make much sense but worth a shot in troubleshooting.
I looked over your config, and don't see anything wrong with it apart from the heaters not conforming with the standard H0 being the bed (I'm sure your slicer will need to be informed about that). Also your temps would be wrong (since you have a top temp of 280 for your bed, and 120 for your extruder).
From your config it appears like you're not using any overrides. Is this issue present from the moment you power on the board? It is possible to have other gcode elsewhere, like in homeall.g for instance if you were really crazy.
My bog standard configuration from a printer I setup the other day looks as follows:
; Heaters M308 S0 P"bedtemp" Y"thermistor" T100000 B4138 ; configure sensor 0 as thermistor on pin bedtemp M950 H0 C"bed" T0 ; create bed heater output on bed 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 C7.060000e-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 -
If I unplug the thermistors the reading goes to -273.1. It is no longer doing that thing where it was reading one thermistor and using that reading for both. I the board is starting to do some other funny things, for example earlier the wifi shutoff when I disconnected the one thermistor, just a few minutes go it did that when I plugged it in. I think the board is messed up, my guess is there is something wrong with the fan motors I'm using to cool the hotend, everything was find until I tried to turn them on, but still it just does not make sense. Maybe the board is haunted ; )
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@amostol said in Issue with the thermistors issues:
The temperature seems to be right, when they work they show the same temperature as my other printers in the same room.
thats because they are 100k thermistors. at room temperature they are all at 100k.
the beta value describes the change in resistance with temperature increase.if you for example have a semitec 104-gt2 your temperature will be off by about 20C at 200C.
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https://duet3d.dozuki.com/Wiki/Gcode?revisionid=HEAD#Section_M563_Define_or_remove_a_tool
; Tools
M563 P0 D0 F0 ; define tool 0Try adding H1 to your tool definition. I think that's why you're getting N/A for heater in DWC.
