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Mickey_blu_eyes

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  • Yes its a thermistor and whole thing exactly same (wiring, connections and code) as tutorial in link (except using 15 Ohm thermistor and resistor, rather than 15k Ohm as in tutorial). 50 or 60 degrees Celsius as well. I will try a higher resistor and see if that helps cheers

    Hi Downunder, thanks for the advice. I will try a higher resistor and see if that helps. How do I get the Marlin code btw?

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  • Yea, I have the thermistor and the resistor of same resistance connected in series to the 5v output of the Arduino. By determining the changing resistance of the thermistor and relating this to its temperature, it gives a readout of the temperature of the thermistor. But putting the 5V through the thermistor already causes it to heat up significantly - apparently you can correct for this, but I can't have the thermistor that hot for what I need it for. As you've probably guessed I'm not very good at electronics - I'm asking how to keep the same setup, but minimise the self-heating of the thermistor. It's only 15Ohm - would making it a higher resistance make it heat up more or less? I assume more. What about making it bigger or smaller for example? Would putting a lower voltage or lower ...

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    Yea, I have the thermistor and the resistor of same resistance connected in series to the 5v output of the Arduino. By determining the changing resistance of the thermistor and relating this to its temperature, it gives a readout of the temperature of the thermistor. But putting the 5V through the thermistor already causes it to heat up significantly - apparently you can correct for this, but I can't have the thermistor that hot for what I need it for. As you've probably guessed I'm not very good at electronics - I'm asking how to keep the same setup, but minimise the self-heating of the thermistor. It's only 15Ohm - would making it a higher resistance make it heat up more or less? I assume more. What about making it bigger or smaller for example? Would putting a lower voltage or lower current through it make it heat less and then if so how would you implement that with the setup I have already? Thanks for your help downunder

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