Adafruit Universal Thermocouple Amplifier MAX31856 Breakout

Thermocouples are very sensitive, requiring a good amplifier with a cold-compensation reference, as well as calculations to handle any non-linearities. For a long time we've suggested our MAX31855K breakout, which works great but is only for K-type thermocouples.

Vin
Power input for the breakout. Adafruit Learn says the onboard regulator accepts 3-5VDC and to power it at the microcontroller logic level.
Type · powerVoltage · 3-5VDC input, same as logic level on Vin
3Vo
3.3V regulator output available from the breakout.
Type · powerVoltage · 3.3V output, up to 100mA per Adafruit Learn
GND
Common ground for power and logic.
Type · groundVoltage · 0V
SCK
SPI clock input to the MAX31856 breakout.
Type · signalVoltage · 3-5V logic safe, use the logic level on Vin
SDO
SPI data out from the MAX31856 to the microcontroller, MISO.
Type · signalVoltage · 3-5V logic safe, use the logic level on Vin

Start wiring

SPI · I2S · 3-5VDC input, same as logic level on Vin · 3.3V output, up to 100mA per Adafruit Learn

Verify supply voltage and logic levels before powering up.

Module pins: Vin, 3Vo, GND, SCK, SDO, SDI, CS, FLT. Schematik maps them to your board in the app.

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