This driver depends on:
Please ensure all dependencies are available on the CircuitPython filesystem. This is easily achieved by downloading the Adafruit library and driver bundle.
Installing from PyPI¶
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-ccs811
To install system-wide (this may be required in some cases):
sudo pip3 install adafruit-circuitpython-ccs811
To install in a virtual environment in your current project:
mkdir project-name && cd project-name python3 -m venv .env source .env/bin/activate pip3 install adafruit-circuitpython-ccs811
See the guide for wiring and installation instructions.
Of course, you must import the library to use it:
import busio import adafruit_ccs811
Next, initialize the I2C bus object.
from board import * i2c = board.I2C() # uses board.SCL and board.SDA
Once you have created the I2C interface object, you can use it to instantiate the CCS811 object
ccs = adafruit_ccs811.CCS811(i2c)
To read the gas sensor simply read the attributes:
print("CO2: ", ccs.eco2, " TVOC:", ccs.tvoc)
Contributions are welcome! Please read our Code of Conduct before contributing to help this project stay welcoming.