adafruit_htu21d

This is a breakout for the Adafruit HTU21D-F humidity sensor breakout.

• Author(s): ktown

Implementation Notes

Hardware:

• Adafruit HTU21D-F Temperature & Humidity Sensor Breakout Board (Product ID: 1899)

Software and Dependencies:

• Adafruit CircuitPython firmware for the supported boards: https://github.com/adafruit/circuitpython/releases
• Adafruit’s Bus Device library: https://github.com/adafruit/Adafruit_CircuitPython_BusDevice

class adafruit_htu21d.HTU21D(i2c_bus, address=64)

A driver for the HTU21D-F temperature and humidity sensor. :param i2c_bus: The busio.I2C object to use. This is the only required parameter. :param int address: (optional) The I2C address of the device.

measurement(what)

Starts a measurement. Starts a measurement of either HUMIDITY or TEMPERATURE depending on the what argument. Returns immediately, and the result of the measurement can be retrieved with the temperature and relative_humidity properties. This way it will take much less time. This can be useful if you want to start the measurement, but don’t want the call to block until the measurement is ready – for instance, when you are doing other things at the same time.

relative_humidity

The measured relative humidity in percent.

temperature

The measured temperature in degrees Celcius.