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    Thermistor issues

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    • Mike 1undefined
      Mike 1
      last edited by

      Hello everyone,
      I had to repace a heater and thermistor due to hardware damage. I use Firmware V3.5.2 and a daughter board (the preowner istalled it).
      I replaced it with with one of these:
      https://de.aliexpress.com/item/1005005184402518.html?spm=a2g0o.productlist.main.3.6d466f71pClAx0&algo_pvid=6893930b-ce51-4a3b-98a4-3f1ea3fd9b95&algo_exp_id=6893930b-ce51-4a3b-98a4-3f1ea3fd9b95-1&pdp_npi=4%40dis!EUR!35.10!32.29!!!36.65!33.72!%40210307c417196022385586113e4228!12000032636459190!sea!DE!0!AB&curPageLogUid=wke0dKaezosk&utparam-url=scene%3Asearch|query_from%3A
      After switching it on, the display showed 2000C. Now I disasseblemd it and used a PT100. Still 2000C
      Here is the code from the config file that used to work:

      ; Heater2
      M308 S2 P"spi.cs1" Y"rtd-max31865" A"T1" ; create sensor number 2 as a PT100 sensor in the second position on the Duet 2 daughterboard connector
      ;M308 S2 P"e1temp" Y"thermistor" A"T1" T100000 B4725 C7.06e-8 ; Set thermistor
      M950 H2 C"e1heat" T2 ; Extruder 0 heater
      M143 H2 S300

      Did I kill the board or is there a fix? I could use the PT100 in the future.

      Thanks!
      Mike

      Phaedruxundefined 1 Reply Last reply Reply Quote 0
      • Phaedruxundefined
        Phaedrux Moderator @Mike 1
        last edited by

        @Mike-1 said in Thermistor issues:

        and a daughter board

        which daughterboard exactly?

        your link seems to indicate that the new temp sensor is a K500 thermocouple, not a PT100. Are you saying you swapped it out?

        Photo of your wiring?

        Z-Bot CoreXY Build | Thingiverse Profile

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