First post here. I tried searching but couldn't find what I needed.
I'm trying to tap into my thermostat's thermistor voltage divider to get the same reading on my arduino as the thermostat's uC. The idea is to probe the thermistor voltage divider using the arduino.
I'm worried that by doing this that I will 'load' the circuit and the thermostat's temperature readings will be perturbed. Am I wrong? If so, are there any tricks to do this?