AHT20

A Node.js library for reading temperature and humidity values over I2C from an AHT20

Installation

npm install aht20

The only dependency is i2c-bus and this package will work on any Linux board compatible with the library. See the library for more details.

Tested on a Raspberry Pi 3B.

Usage

const AHT20 = require( "aht20" );

const sensor = new AHT20(1);
sensor.readData().then( data => console.log( data ) );

Running the above code will use I2C bus 1 to read the temperature and humidity from a connected AHT20. The output is the temperature in Celsius and the humidity as a percentage and looks something like this:

{ 
    "humidity": 16.15, 
    "temperature": 23.96 
}

You can pass in different bus by changing the number in the constructor or passing in an i2c-bus bus object. See the API or example folder for more details.

See the i2c-bus README or look online for wiring.

API

All functionality is through the AHT20 Class. See ./examples for usage.

new AHT20(bus, address)

• bus - a number or I2C Bus
• address - optional, defaults to 0x38 - the address of the AHT20

Returns a new AHT20 object.

readData()

An asynchronous function that returns the temperature (Celsius) and humidity (%) date from the sensor.

reset()

An asynchronous function that resets the sensor.

Author & License

© 2024 OrangeJedi. Released under the MIT License.