Hi all, I am running a few 10k thermistors around. The longest away will probably be about 10-15 meters, I'm using cat5e so at least they will be twisted.
I'm measuring them with the arduino, and using the onboard 5v output for the divider circuits. I have got plenty of thermistors around and pinpoint accuracy is not really a necessity, so I'm not using digital temperature sensors at this stage. But id still like to keep it as accurate as possible with the components that I'm using
I think I have got two options, not sure which would be the best..
- set up voltage divider at the location of the thermistor, 3 wires (two for power and one for variable voltage output) and measure the return voltage
- set up voltage divider at the location of the arduino, use just two wires (connected to the thermistor) and measure the resistance