Introduction

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The MCP9808 is an awesome, high accuracy temperature sensor that communicates over I2C. Its available on Adafruit as a breakout <https://www.adafruit.com/products/1782>_.

Dependencies

This driver depends on:

• Adafruit CircuitPython <https://github.com/adafruit/circuitpython>_
• Bus Device <https://github.com/adafruit/Adafruit_CircuitPython_BusDevice>_

Please ensure all dependencies are available on the CircuitPython filesystem. This is easily achieved by downloading the Adafruit library and driver bundle <https://github.com/adafruit/Adafruit_CircuitPython_Bundle>_.

Installing from PyPI

On supported GNU/Linux systems like the Raspberry Pi, you can install the driver locally from PyPI <https://pypi.org/project/adafruit-circuitpython-mcp9808/>_. To install for current user:

.. code-block:: shell

pip3 install adafruit-circuitpython-mcp9808

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

.. code-block:: shell

sudo pip3 install adafruit-circuitpython-mcp9808

To install in a virtual environment in your current project:

.. code-block:: shell

mkdir project-name && cd project-name
python3 -m venv .venv
source .venv/bin/activate
pip3 install adafruit-circuitpython-mcp9808

Usage Notes

Getting the temperature in Celsius is easy! First, import all of the pins from the board, board.I2C() for native I2C communication and the thermometer library itself.

.. code-block:: python3

import board import adafruit_mcp9808

Next, initialize the I2C bus in a with statement so it always gets shut down ok. Then, construct the thermometer class:

.. code-block:: python3

Do one reading

with board.I2C() as i2c: t = adafruit_mcp9808.MCP9808(i2c)

  # Finally, read the temperature property and print it out
  print(t.temperature)

Documentation

API documentation for this library can be found on Read the Docs <https://docs.circuitpython.org/projects/mcp9808/en/latest/>_.

For information on building library documentation, please check out this guide <https://learn.adafruit.com/creating-and-sharing-a-circuitpython-library/sharing-our-docs-on-readthedocs#sphinx-5-1>_.

Contributing

Contributions are welcome! Please read our Code of Conduct <https://github.com/adafruit/Adafruit_CircuitPython_MCP9808/blob/main/CODE_OF_CONDUCT.md>_ before contributing to help this project stay welcoming.