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V6 Thermistor seems to be measuring hot

Hi,

I just converted my old i3 Mk2 from the stock direct drive to a custom extruder setup with a V6 . I am using the same NEMA17 and stock stepper drivers I had on my direct drive. After a few days of messing with Marlin settings, I have it printing pretty well, but there is one weird thing left:

Whereas on my direct drive, I could print PLA well at 190, The optimal temperature for this setup for PLA is apparently 225… Extruding lower than that results in tons of skipping from my extruder and an underextruded print. This seems REALLY high to me, and I am wondering if I could have gotten a bad thermistor?

Oh yeah : Marlin version is 2.0.x, thermistor type set to 5.

Any insights would be appreciated.

Answer this question I have this problem too

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Type 5 in Marlin is correct, it is possible that the thermistor is not working correctly, what ohm reading do you get at room temperature if you find it’s not reading 100ohm at 25C, then it would indicate a damaged thermistor.


As with any change to the HotEnd you should re-run any PID tuning for optimal results.

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Dave will be eternally grateful.
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