I'm running NodeRed to control my home brewery. Currently running an Arduino Mega that controls a relay board using the Arduino Node (Arduino like loaded with StandardFirmata script) to control relay board (working) and solid state relays.
I'm struggling to work out how I can read my 3 temperature probes. These are standard RTD PT100 probes with the MAX31865 amplifier boards. All of the nodes that I have seen so far are for Raspberry Pi.
Is there any way I can read the analogue value on the Arduino and convert that to temp?
I'm fine with adding a second Arduino if absolutely needed as a dedicated temp reader, as long as I can get the values into NodeRed