stevemarple/hih61xx

Arduino library to read Honeywell HIH61xx humidity sensors

HIH61xx

HIH61xx is a library for accessing the humidity and temperature data from the I2C range of Honeywell HIH61xx humidity sensors (HIH6120-021, HIH6121-021, HIH6130-021 and HIH6131-021). Do not confuse these sensors with the SPI versions (HIH6130-000 and HIH6131-000).

The sensor can be accessed using either hardware I2C (with the Wire library) or software I2C (using the SoftWire library); examples demonstrate both uses. For low-power operation an optional power pin can be used to control power to the device. A state machine ensures the relevant timing constraints are observed.

Requirements

The following libraries are required:

• AsyncDelay: see https://github.com/stevemarple/AsyncDelay
• SoftWire: see https://github.com/stevemarple/SoftWire

Examples

The HIH61xx_Wire_demo and HIH61xx_SoftWire_demo sketches demonstrates the state machine operation.

License

The HIH61xx library is released under the GNU Lesser General Public License, version 2.1. See LICENSE.txt for details.

Contributors

• Steve Marple
• per1234
• Giuseppe Pisano