[3.4.0b7] Firmware update changes 1LC temp

[Serge]

@serge
20/12/2021, 14:29:43 M308 S1 H999
Measured H correction for port "20.temp0" is -6

[Serge]

@serge After reboot, same temp values.
It seems the hotend temp value is correct, but not the bed temp than i have to calibrate.

[dc42]

@serge which temperature input on what board is the bed thermistor input connected to?

[Serge]

@dc42 Hi, the temp input for the bed is directly on the Duet 6.
; Heaters
M308 S0 P"temp0" Y"thermistor" T100000 B3950 A"Bed" ; configure sensor 0 as thermistor on pin temp0
M950 H0 C"out1" T0

[dc42]

@serge do you get a more accurate bed temperature reading if you revert to older main board firmware?

[Marshal]

@dc42
No issue with bed thermistor here:

M308 S0 P"0.temp0" Y"thermistor" T100000 B4725 C7.06e-8

[Serge]

@dc42 Hi, no, don't get more accurate.

[Serge]

@marshal Here is the documentation from RatRig

[A Former User]

This post is deleted!

[dc42]

@serge thanks, so this is not an issue with firmware 3.4.0beta7 in particular.

Have you run temperature input calibration on input temp0 of the main board (where the bed heater is connected)?

[Serge]

@dc42 No, i don't.
Did you think i have to modify the B3950 to B4725 ?
I don't know what thermistor is for B3950.

[dc42]

@serge try running ADC calibration on that input, see https://duet3d.dozuki.com/Wiki/Calibrating_thermistor_and_PT1000_readings#Section_Semi_automatic_calibration.

[Serge]

@serge I made the modification to the B4725, and the bed temperature seems to be much more real now.

I think i will try whith this value now.

[Serge]

@serge

[leobg]

I have upgraded back to b7, (sbc mode), but apt spit an error:

Setting up reprapfirmware (3.4-b7-1) ...
Unhandled exception. System.Collections.Generic.KeyNotFoundException: The given key '' was not present in the dictionary.
   at System.Collections.Generic.Dictionary`2.get_Item(TKey key)
   at DuetControlServer.Utility.Firmware.UpdateFirmwareRemotely() in /home/christian/Duet3D/DuetSoftwareFramework/src/DuetControlServer/Utility/Firmware.cs:line 425
   at DuetControlServer.Program.CheckForAnotherInstance() in /home/christian/Duet3D/DuetSoftwareFramework/src/DuetControlServer/Program.cs:line 349
   at DuetControlServer.Program.Main(String[] args) in /home/christian/Duet3D/DuetSoftwareFramework/src/DuetControlServer/Program.cs:line 100
   at DuetControlServer.Program.<Main>(String[] args)
Aborted

I'll appreciate if someone can throw some insight on what might be wrong with the SBC upgrade mode..

Meanwhile I have manually updated the 6HC and 1LC firmwares (B7-1) from the thread here. Temperature reads normal for me again now. Will give the new firmware a try to see if anything else pops up

edit: here is M121 B121 output:

M122 B121
Diagnostics for board 121:
Duet TOOL1LC rev 1.1 or later firmware version 3.4.0beta7+1 (2021-12-22 18:45:45)
Bootloader ID: SAMC21 bootloader version 2.3 (2021-01-26b1)
All averaging filters OK
Never used RAM 2152, free system stack 2762 words
Tasks: Move(notifyWait,0.0%,153) HEAT(notifyWait,0.2%,115) CanAsync(notifyWait,0.0%,61) CanRecv(notifyWait,0.0%,76) CanClock(notifyWait,0.0%,65) ACCEL(notifyWait,0.0%,27) TMC(delaying,3.0%,57) MAIN(running,91.8%,351) IDLE(ready,0.0%,26) AIN(delaying,5.0%,142), total 100.0%
Last reset 00:06:32 ago, cause: software
Last software reset time unknown, reason: AssertionFailed, available RAM 3392, slot 1
Software reset code 0x0120 ICSR 0x00000000 SP 0x2000415c Task  Freestk 129 bad marker
Stack: 00000544 00022ffc 00019b65 20003134 00016cff 20003134 000163d1 20000ed0 00000000 00000001 00008275 200071c8 200071c8 200071e0 00000000 20000f50 00011647 000223b8 00022474 00021ac8 00019b05 200071c8 200071c8 20000f50 000083ed 200071d8 000009c7
Driver 0: pos 0, 414.0 steps/mm,standstill, SG min 2, read errors 0, write errors 1, ifcnt 177, reads 64992, writes 13, timeouts 0, DMA errors 0, CC errors 0, steps req 0 done 0
Moves scheduled 0, completed 0, in progress 0, hiccups 0, step errors 0, maxPrep 0, maxOverdue 0, maxInc 0, mcErrs 0, gcmErrs 0
Peak sync jitter 1/6, peak Rx sync delay 599, resyncs 0/1, no step interrupt scheduled
VIN voltage: min 24.7, current 24.8, max 24.8
MCU temperature: min 37.8C, current 37.9C, max 38.4C
Last sensors broadcast 0x00000002 found 1 205 ticks ago, 0 ordering errs, loop time 0
CAN messages queued 8154, send timeouts 0, received 3564, lost 0, free buffers 37, min 37, error reg 110000
dup 0, oos 0/0/0/0, bm 0, wbm 0, rxMotionDelay 0
Accelerometer: LIS3DH, status: 00
I2C bus errors 0, naks 3, other errors 0
=== Filament sensors ===
Interrupt 4 to 12us, poll 6 to 572us
Driver 0: pos 36.21, errs: frame 0 parity 0 ovrun 0 pol 0 ovdue 0

[rjenkinsgb]

Hi,
I was referred to this thread by Marshal.

I have a similar problem with a PT1000 reading low at ambient temperature on an LC1 toolboard, after fitting a new E3D one to replace a thermistor.
The PT1000 reads 1071 Ohms at ambient, which should be 18.4'C
(My heating runs at 18'C so pretty close).

The tool with the PT1000 shows around 8 - 10'C lower than the other two tools, at room temperature; presently its showing 10.5 while the other tools and bed are showing from 18 to 21'C.

I have just loaded the beta7-1 toolboard firmware and power cycled the machine; no change.
I have also run the temperature calibration, which made a slight adjustment according to the status, but did not have any noticeable effect on the ambient reading.

25/12/2021, 08:54:03	M308 S1 L999
Measured L correction for port "20.temp0" is 0
25/12/2021, 08:51:56	M308 S1 H999
Measured H correction for port "20.temp0" is -10

M122 B20 result:

25/12/2021, 09:04:07	M122 B20
Diagnostics for board 20:
Duet TOOL1LC rev 1.0 or earlier firmware version 3.4.0beta7+1 (2021-12-22 18:45:45)
Bootloader ID: SAMC21 bootloader version 2.3 (2021-01-26b1)
All averaging filters OK
Never used RAM 3620, free system stack 2788 words
Tasks: Move(notifyWait,0.0%,153) HEAT(notifyWait,0.1%,103) CanAsync(notifyWait,0.0%,65) CanRecv(notifyWait,0.0%,76) CanClock(notifyWait,0.0%,65) TMC(notifyWait,3.0%,57) MAIN(running,91.9%,329) IDLE(ready,0.0%,40) AIN(delaying,5.0%,142), total 100.0%
Last reset 00:23:27 ago, cause: power up
Last software reset data not available
Driver 0: pos 0, 409.0 steps/mm,standstill, SG min 0, read errors 0, write errors 0, ifcnt 12, reads 48493, writes 12, timeouts 0, DMA errors 0, CC errors 0, steps req 0 done 0
Moves scheduled 0, completed 0, in progress 0, hiccups 0, step errors 0, maxPrep 0, maxOverdue 0, maxInc 0, mcErrs 0, gcmErrs 0
Peak sync jitter 0/5, peak Rx sync delay 215, resyncs 0/0, no step interrupt scheduled
VIN voltage: min 23.8, current 23.8, max 23.9
MCU temperature: min 23.4C, current 27.7C, max 27.8C
Last sensors broadcast 0x00000002 found 1 17 ticks ago, 0 ordering errs, loop time 0
CAN messages queued 27894, send timeouts 0, received 23664, lost 0, free buffers 37, min 37, error reg 0
dup 0, oos 0/0/0/0, bm 0, wbm 0, rxMotionDelay 0
Accelerometer: none
I2C bus errors 4509, naks 4509, other errors 4509

M308 S1 result

25/12/2021, 09:05:33	M308 S1
Sensor 1 (T0) type PT1000 using pin 20.temp0, reading 10.4, last error: sensor open circuit, R:2200.0 L:0 H:-10

Hope this is useful?

If there are any other tests I can do, please let me know.

Original thread here:
https://forum.duet3d.com/topic/26521/temperature-wrong-after-fitting-pt1000

[PCR]

@dc42 i just build a new printer with the dyze 500 C thermistor. I am using the 3.4 B6 on toolboard and duet mini. But the temp of the thermistor is always 15-20 degrees off. I testet it with an external K type thermometer. I see that there was the problem with B7 but could it affect the dyze at B6 too? I am now on holiday but back soon. Will flash 3.3 then ASAP and will compare.

[Serge]

@rjenkinsgb Have you try the semi automatic calibration ?
https://duet3d.dozuki.com/Wiki/Calibrating_thermistor_and_PT1000_readings

[rjenkinsgb]

@serge said in [3.4.0b7] Firmware update changes 1LC temp:

Have you try the semi automatic calibration ?

Yep, I mentioned I had done that and the output from it was the first insert above.

[dc42]

@rjenkinsgb said in [3.4.0b7] Firmware update changes 1LC temp:

I have just loaded the beta7-1 toolboard firmware and power cycled the machine; no change.

Do you mean beta7+1 ?

If you are certain that your PT1000 is reading correctly (which depends on how accurate your multimeter is), you can adjust the M308 L parameter manually to correct the PT1000 reading at low temperatures.