High temp thermistor setup | Marlin Firmware | Page 1

severe panther May 18, 2025, 7:30 PM

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I bought a high temp (450 degrees) thermistor for a prusa mks3s. Does anyone know which thermistor choice (i was thinking 66 as i used that on a different high temp thermistor) in the marlin config.h thermal settings section?

Thanks, dave

drowsy oasis May 18, 2025, 7:37 PM

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You need to look at the listing you purchased it from to get the specs

severe panther May 18, 2025, 8:21 PM

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Tried that but the Spanish shop on aliexpress is clueless, didn't even understand the question

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Where can I find prusa mk3s expertise to help me track this down?

drowsy oasis May 18, 2025, 8:25 PM

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Printer-specific expertise doesn't apply here since you're asking about an unknown thermistor. You'll need to track down the specs on the thermistor before you can update the firmware.

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Prusas don't ship with that thermistor

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Keep in mind that you'll need to replace the stock aluminum heater block as well since it'll soften above 300C

#High temp thermistor setup