MiniPiio Thermocouple is a single channel temperature measurement using Type-K thermocouples add-on board for the Raspberry Pi.

The MAX31855 is a sophisticated thermocouple-to-digital converter. It features a built-in 14-bit analog-to-digital converter (ADC) for thermocouple measurement. In addition it also contains a cold-junction sensor for compensation temperature sensing and correction.

The MAX31855 resolves temperatures to 0.25°C. It allows readings as high as +1800°C and as low as -270°C and exhibits thermocouple accuracy of ±2°C for temperatures ranging from -200°C to +700°C for K-type thermocouples.

• Works with any K type thermocouple
• Temperature range = -200°C to +1350°C output
• Resolution 0.25 degree
• Accuracy is ±2°C
• Internal cold junction temperature reading
• SPI bus interface
• Two SPi Chips Selects (!CE0 and !CE1)
• 2x Thermocouple Interfaces