NTC Thermistor formula

Using Arduino Sensors
#1

Hello everyone,
I am looking for an accurate formula to use for my thermistor, but I want to avoid the Steinhart one, do you have any better formula to suggest ?

Link to the thermistor:

Thank you in advance,

Napster

#2

I am looking for an accurate formula to use for my thermistor, but I want to avoid the Steinhart one, do you have any better formula to suggest ?

The Steinhart-Hart formula does an approximation to the third order. Is that too precise for you? Why do you want to avoid that formula? Is the calculation overhead too big?

#3

The data sheet contains the curve of resistance versus temperature. Fit that curve with any function you like. In any case, you still have to calibrate the thermistor.

#4

you can use multimap - Arduino Playground - MultiMap - to make a direct mapping of the analogRead values to temperature in Celsius or Fahrenheit. Whatever you like. You can use the float (my advise) or the long version .

#5

This will match your NTC very well.
Serial with 2k7. Code shown

https://dl.dropboxusercontent.com/u/43081398/ardino-ntc-outdoor-regning.pdf

#6