E3D V6 Thermistor inaccurate reason new Firmware?



  • Hi Guys,

    i'am not quiet shure what i exactly changed, but the Thermistor of my e3D V6 https://e3d-online.com/thermistor-cartridge got really big Problems
    to get to Temparture. (260°C)
    I belive before i updated my Firmware this wasn't the Case.

    I checked my Thermistor Settings and commented out the old Setting and tryed this Settings:

    [[language]]
    M305 P1 T100000 B4267 C0 R4700 ; Set thermistor + ADC parameters for heater 1 Nozzle
    ;M305 P1 T100000 B4725 C7.060000e-8 R4700 ; Set thermistor + ADC parameters for heater 1 Nozzle
    
    ```The Values for the [http://reprap.org/wiki/Thermistor#ATC_Semitec_104GT-2](http://reprap.org/wiki/Thermistor#ATC_Semitec_104GT-2)
    
    The new Values should work and are the right one right?

  • administrators

    The values you have commented out should give good results, assuming the thermistor you are using has the same characteristics as the 104GT-2. I have just set those parameters on a Duet and connected a 100 ohm resistor in place of the thermistor to test the reading from 1.19 firmware. The reading I get (286.4C) agrees well with the resistance vs. temperature table at http://www.atcsemitec.co.uk/gt-2-glass-thermistors.html.



  • Ok, thx i will try something today and hope that works. (Replace my PSU for the DuetWifi that got only 4A on 12V)


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