Datasheet

You can also download the adafruit_max31855.mpy from its releases page on Github.

Before continuing make sure your board's lib folder or root filesystem has

the adafruit_max31855.mpy, and adafruit_bus_device files and folders copied over.

Next connect to the board's serial REPL so you are at the CircuitPython >>> prompt.

Usage

To demonstrate the usage of the sensor we'll initialize it and read the temperature. First initialize the SPI connection

and library by running:

Now you can read the temperature property to retrieve the temperature from the sensor in degrees Celsius:

That's all there is to reading temperature with the MAX31855 and CircuitPython code!

import board

import busio

import digitalio

import adafruit_max31855

spi = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)

cs = digitalio.DigitalInOut(board.D5)

max31855 = adafruit_max31855.MAX31855(spi, cs)

print('Temperature: {} degrees C'.format(max31855.temperature))