Review on 🌡️ SainSmart MAX6675 Thermocouple Temperature Sensor for Furnace & Kiln Measurement, Range 0-1024℃ by Ikki Martini

I ordered one of these. The first shows about 45 degrees higher than it should, so I asked for a replacement. The second doesn't work at all. I'm two and don't have a working sensor yet. If anyone decides to buy one of these, note that it comes with no documentation. Documentation is hard to find online, but I was able to find the Adafruit project on Github: https://github.com/adafruit/Adafruit-MAX31855-libraryEDIT - DO NOT USE THIS LIBRARY - SEE. UPDATE BELOW. You can start by connecting the sensor to the Arduino by following this mapping in the example. The current example looks like this: (https://github.com/adafruit/Adafruit-MAX31855-library/blob/master/examples/serialthermocouple/serialthermocouple.pde)#define DO 3#define CS 4#define CLK 5GND and VSS Matching between Arduino and sensor. This requires 3 I/O pins. There is another way to connect the sensor that only requires an I/O pin on the Arduino, but it didn't work for me. ---------------------------------- ------------------------------ -------------------- ----------- UPDATE 29 September 2015: DO NOT USE THE ABOVE MENTIONED LIBRARY. That was the real reason for the 45* f difference in the exposure. Better results could be obtained if documentation were included with this document. Before I sent the sensor back to Revain I figured I'd try a different library. I found the instructions below from Look A Potato. Using the mentioned library, I was able to accurately measure temperature in both Celsius and Fahrenheit with the first sensor I got. The second sensor is actually non-functional and is being returned to Revain. ://github.com/adafruit/MAX6675-library Credit for this library is given to the contributors listed here: https://github.com/adafruit/MAX6675-library/graphs/contributors