“I bought this to measure/control the the temperature in a cold chamber operating the range 0-2 degrees C using a 3-wire PT100 sensor.
I had previously bought two similarly specified, but much cheaper, generic modules. Both of them gave nonsensical readings most of the time, and when they did appear to be working gave readings between 1 and 2 degrees C in an equilibrated ice/water bath which gave a reading of 0.0-0.1C using a calibrated reference thermometer.
The Adafruit module just worked 'out of the box' and consistently reported a temperature of ~0.2C in the ice/water bath. It has been working 24/7 without any anomalies.
I read temperatures using an Arduino nano and the Adafruit_MAX31865 library. Both hardware and software SPI worked fine. Code was compiled and loaded using the Arduino IDE v. 1.8.13 running on an Ubuntu 22.04 machine.
Moral is (for me in this case at least) is 'buy cheap, buy twice'. Or three times as it turned out.”
“Buying the Adafruit Max31865 is money well spent, as it works with very little configuration and has the dependable accuracy you can trust against other copies out there!”
“The sensor boards arrived next day, so we could get on with our work first thing. They are easy to set up and get running on the arduino. All good
We got RTD sensors from RS which has a greater choice than PIHUT, and we needed small sensors for our test rig.”
“Used it with Raspberry PI and a PT100 with no issues.
I had to break a connection to make it compatible with PT100 with 3 wires - it was well documented and it worked as expected... but, to be honest, I would prefer to have jumpers pins instead.”
