Hello all, Im having a strange issue arrive when i try an read 2 different pins. Im using an Arduino UNO (Sparkfun Redboard)
So my routine samples a thermistor (temp probe) on A0 every 10ms and returns an average after 200 samples via some fun math... works great, dead on with the temp.
When I add in another routine to read a POT on A1 or any of the pins it affects the reading at A0. The reading on the pot is fine but affects the output to A0???
The Thermistor is on the 3.3V line with an AREF and the POT uses the 5V line... why would this affect the readings at A0? If i pull the jumper from the POT the Thermistor temp/resistance reads normal, place it back on and when i turn the knob the resistance/temp goes up or down...