This is a CircuitPython driver for the MCP9600 thermocouple I2C amplifier. In addition to the MCP9600 breakout, you will also need a thermocouple, which can be found in the Adafruit store. The MCP9600 supports several thermocouple types for different temperature ranges. The "K" type is the default, with a range of -200C to +1372C.

This driver depends on:

• Adafruit CircuitPython

Please ensure all dependencies are available on the CircuitPython filesystem. This is easily achieved by downloading the Adafruit library and driver bundle.

On supported GNU/Linux systems like the Raspberry Pi, you can install the driver locally from PyPI. To install for current user:

pip3 install adafruit-circuitpython-mcp9600

To install system-wide (this may be required in some cases):

sudo pip3 install adafruit-circuitpython-mcp9600

To install in a virtual environment in your current project:

mkdir project-name && cd project-name
python3 -m venv .venv
source .venv/bin/activate
pip3 install adafruit-circuitpython-mcp9600

This is a simple example showing the hot junction temperature (the temperature at the tip of the thermocouple). You may need to adjust the I2C frequency if you receive input/output errors.

import board
import busio
from adafruit_bus_device.i2c_device import I2CDevice
from adafruit_mcp9600 import MCP9600
i2c = busio.I2C(board.SCL, board.SDA,frequency=200000)
try:
    # using default I2C register and "K" thermocouple
    device = MCP9600(i2c)
    print("temperature(C):",device.temperature)
except ValueError:
    print("MCP9600 sensor not detected")

This example displays the ambient/room and hot junction temperatures at 1 second intervals. Turn on the Mu editor's plotter option to view the temperatures in a real-time graph.

import board
import busio
import time
from adafruit_bus_device.i2c_device import I2CDevice
from adafruit_mcp9600 import MCP9600
i2c = busio.I2C(board.SCL, board.SDA, frequency=200000)
try:
    device = MCP9600(i2c)
    print("version:", device.version)
    while True:
        print((
            device.ambient_temperature,
            device.temperature
        ))
        time.sleep(1)
except ValueError:
    print("MCP9600 sensor not detected")

API documentation for this library can be found on Read the Docs.

For information on building library documentation, please check out this guide.

Contributions are welcome! Please read our Code of Conduct before contributing to help this project stay welcoming.