Thermistor Temperatur od T2 and T3 are not correct

Mike 0

I recently (Nov 2021) bought a Toolchanger from E3D, and now I'm facing some issues, and E3D (Keith) forwarded me to this forum.
the firmware installed on the Board was rrf 3

Currently, I have 1 major Problem and 2 smaller problems.

The Thermistor temperature of T2 and T3 show 8° - 9°C instead of the 24 - 25°C room Temp.

The resistance of the all 4 tolls is the same, about 106 KOhm
If i change the plugs from T2 to input E0 and T3 to E1 the temperature is shown correctly.
Any of the 4 thermistors I connect to the duex show the wrong Temp in the Web portal.
I tried all temp input on the duex as well.
I changed the inputs in the Config.g file from P"e2temp" to P"duex.e2temp". But I still get the same wrong 8° reading.
In the config.g the config of the thermistors for all 4 hotends is the same.

I could establish that the Thermistors are not the issue. The config.g looks ok to me too. What else I can try?

X and Y moment stuttering:

Sometimes the X and Y movement are not as smooth they should be. I use Hemera direct drives, but it even happens when there is no tool loaded (but without tool it happens less often)
It only happens at full speed, though.
Here is a video when the tool changer goes back after wiping:
Video Stuttering movement

Y Axis Position not correct:

Sometimes the Y-axis position is not correct. For example, he tries to measure the bed height after calibration, but Y is not in the middle of the bed, it is somewhere like 50 mm out of the middle, at about position 50 mm, but the web portal shows 100 mm. Then I recalibrate. Sometimes it is fixed but sometimes not.
The reset via the Browser window does resolve the problem. Not sure what is causing this problem.

jay_s_uk

@mike-0 what firmware version are you running?
M115 will tell you

Mike 0

@jay_s_uk It is 3.2.2

IRMWARE_NAME: RepRapFirmware for Duet 2 WiFi/Ethernet FIRMWARE_VERSION: 3.2.2 ELECTRONICS: Duet WiFi 1.02 or later + DueX5 FIRMWARE_DATE: 2021-02-11

jay_s_uk

@mike-0 In terms of stuttery movement, i'm pretty sure something got fixed between 3.2.2 and 3.3 for that so I would suggest upgrading (and have a skim through the notes just in case).
Can't help you with the thermistor issue though

Mike 0

@jay_s_uk, thanks a lot. That sound promising. I will check how to do an update. I might wait till Someone from duet come back to me regarding the Thermistor thing.

I honestly think the problem of the thermistors is Hardware (or firmware) related. Because it seems nobody else had this issue.

jay_s_uk

@mike-0 it may well be hardware related. the duex is the only board I don't have.
Updating the firmware is as easy as uploading this zip to the system tab https://github.com/Duet3D/RepRapFirmware/releases/download/3.3/Duet2and3Firmware-3.3.zip
and the changelog is here https://github.com/Duet3D/RepRapFirmware/wiki/Changelog-RRF-3.x#reprapfirmware-33

Mike 0

@jay_s_uk Thanks a lot. I will give it a try tonight.

Mike 0

@jay_s_uk I just updated the firmware. It was very easy. But the stuttering and the Thermistor problem is still there.

jay_s_uk

@mike-0 can you post your whole config?

Mike 0

@jay_s_uk Here is the File. I think the stuttering got even worse. I uploaded the files and installed the update. Is there anything else i need to adjust ?
Thanks for your help.
config.g

jay_s_uk

@mike-0 M667 S1 has been replaced by M669 K1.
Your M566 speed for Z is really low. Increase it to 60 or 120. That may fix your issue

dc42

@mike-0 what is the PCB revision of the DueX board? It's written on the top, next to the ribbon cable connector. If it's revision 0.11 then you need to add parameter R2200 to the two M308 commands that refer to thermistors connected to the DueX.

Mike 0

@dc42 That did the trick. Yes the version was 0.11.

Thanks a lot. I'm super happy for the quick support. Thanks again

Mike 0

@jay_s_uk I think that solved the problem. It is much smoother now. But i will monitor it.

Thanks again for your help.

SignPostMan

@dc42 said in Thermistor Temperatur od T2 and T3 are not correct:

R2200

Same problem, Same Fix

dc42

@SignPostMan said in Thermistor Temperatur od T2 and T3 are not correct:

@dc42 said in Thermistor Temperatur od T2 and T3 are not correct:

R2200

Same problem, Same Fix

Firmware 3.4 and later detect the DueX version automatically and adjust the default R parameter for M308 accordingly.