Posts made by ejarmo

would you be willing to locate the appropriate pins on a maestro for this process

I see your point, however I was getting excellent stable temperature until I got well into the long print. then the changes started. I have done the Hotend tuning and the stability is better but no as good as it was. perhaps there is some sort of break in.

I am wondering about a possible source for my temperature display to register values that fluctuate constantly between random values between -10 to +5 degrees of set point. the issue happened 10 hrs in to my first long print, no issues with the print however. my first guess was an overheat in the board, but I have a big fan on the board and I calibrated the board temp sensor. strangely it says the board is running at 24c which is lower than the 30ish that is normal.

@Phaedrux said in -273 on maestro e0temp pins:

https://duet3d.dozuki.com/Wiki/PanelDue_Firmware_update

you guys are so awesome

yes. for example the touchscreen on the printer now does not respond to any control elements. I am only able to go through the separate tabs but none of the items on any of the tabs will respond.

I should also mention thanks especially for the slice temp table.

this is confusing, if I put the sensor on a meter and it reads 4.6 meg ohms at room temperature. I had taken it the the heated bed to try to match any of the values in the dyze documentation, but none did. Regardless after several stupid mistakes I have firmware 3.2beta1 installed and a reading for the sensor adjusted on the high gain parameter so that it matches the print bed reading. should be close enough. all filaments will get a temperature print test and the sensor will provide rock steady temperatures. I haven't tested it yet but I wanted to thank everyone for the help. if something goes wrong now I will just give up.

I don't know. the documentation from dyze is that the reading is supposed to be 4066017.

update: v.3.2beta1 firmware update returns message "error, duet maestro IAP.bin not found"

@dc42 said in -273 on maestro e0temp pins:

RepRapFirmware 3.2beta1

to answer an earlier question, at approx. 22c the sensor reads 4.25 meg ohms.

I am using v.3 right now but I will upgrade to the beta. is there any links for documentation on the tuning process which I could access.

@ejarmo said in -273 on maestro e0temp pins:

2000c on Bed and Hot End

first, thanks for the quick responses. I have been trying to install a dyze high temp thermistor. I am new so I have been a bit lost. through careful reading of the installation resource I now understand that I need to tune the adc high and low gain settings because the sensor has such high resistance.

can you think of any reason I would damage the board. when I configured the thermistor i used the internal resistor setting for a wifi board which is 4700 instead of the maestro which is 2700.

I am running v.3 but I had no problems with a pt-100 for a year before that

Re: 2000c on Bed and Hot End

can anyone confirm for me whether I damaged my board by improperly configuring a thermistor. it is reading -273c (open circuit). I have checked the thermistor resistance and the wiring continuity all the way to the board.