Temperature-sensor setup using Arduino feasible?

Hey everyone,

Im currently dealing with a certain project and my internet research lead me to Arduino. My question is if the following problem can be conventiently solved based on a Arduino-solution and if its thus worth it for me to learn how to use Arduino.

For a solar collector, which reaches temperatures up to 200 degrees celsius, a temperature sensor setup is needed to record the temperature data over time periods of several hours. I found a suitable sensor for it (PT100 (-100...200C)) and my current research told me it could be used with the basic Arduino board.

Do you think this is a promising approach for someone with little knowledge about electronics but good scientific understanding in general (im a physics student) ? Thanks a lot for your help in advance! greets Luckystreich

Yes. See openenergy.org for an example.


You'll need a chip like MAX31855 to convert the PT100 probe output into something usable for the Arduino. I believed there are even libraries for it. http://www.maximintegrated.com/en/products/analog/sensors-and-sensor-interface/MAX31855.html or MAX31865 with SPI interface http://www.maximintegrated.com/en/products/analog/sensors-and-sensor-interface/MAX31865.html Smaller package, not as easy to work with physically.

http://www.digikey.com/product-search/en/integrated-circuits-ics/interface-sensor-and-detector-interfaces/2556696?k=max31855 http://www.digikey.com/product-search/en/integrated-circuits-ics/pmic-thermal-management/2556560?k=max31865 Other Maxim info: http://www.maximintegrated.com/en/pst/run.mvp?q=Cold-Junction+Compensated+Thermocouple-to-Digital+Converter

PT100 is a RTD, which requires much different circuitry than a thermocouple.

A quick search found some helpful sources: https://learn.adafruit.com/thermistor/using-a-thermistor http://www.hacktronics.com/Tutorials/arduino-thermistor-tutorial.html

App note [PDF] from Microchip: "Precision Temperature-Sensing With RTD Circuits" http://ww1.microchip.com/downloads/cn/AppNotes/cn011700.pdf

A thermistor is not the same as a thermocouple.