Hi all, I've recycled a thermistor from a device working with only 1 AAA battery.
Now, using the thermistor on the Arduino providing 3.3v to the thermistor and using a 10k resistor I have a temperature reading that is almost double of the current temperature.
I thought may be down the fact that I'm using double the voltage, so I simply divide the temperature by 1.8 and I get a correct value, however after several minutes the values are dropping by 10 degrees, if I reset the board the readings are correct again.
What is wrong? should I use a resistor to feed only 1.2 volts to the thermistor?