tannewt / adafruit_circuitpython_si7021

CircuitPython driver for the Si7021 temperature and humidity sensor

Introduction

Dependencies

This driver depends on the Bus Device library. Please ensure is is also available on the CircuitPython filesystem. This is easily achieved by downloading a library and driver bundle.

Usage Notes

Of course, you must import the library to use it:

import adafruit_si7021

This driver takes an instantiated and active I2C object (from the busio or the bitbangio library) as an argument to its constructor. The way to create an I2C object depends on the board you are using. For boards with labeled SCL and SDA pins, you can:

from busio import I2C
from board import SCL, SDA

i2c = I2C(SCL, SDA)

Once you have created the I2C interface object, you can use it to instantiate the sensor object:

sensor = adafruit_si7021.SI7021(i2c)

And then you can start measuring the temperature and humidity:

print(sensor.temperature)
print(sensor.relative_humidity)

Contributing

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

API Reference

api