AHTx0 Sensor

Information

The AHT20 is a nice but inexpensive temperature and humidity sensor from the same folks that brought us the DHT22. You can take sensor readings as often as you like, and it uses standard I2C so its super easy to use with any Arduino or Linux/Raspberry Pi board.

This sensor has a typical accuracy of +- 2% relative humidity, and +-0.3 °C at 20-80% RH and 20-60 °C. There is only one I2C address so it’s not a good option when you need multiple humidity sensors.

Both AHT10 and AHT20 are supported.

Specifications

• Use with 3.3V or 5V power/logic
• I2C address 0x38
• Operational Temperature range: -40 to 85 °C (+-1 °C typical accuracy over entire range)
• Operational Relative Humidity range: 0 to 100 RH% (+-3 % typical accuracy over entire range)

Setup

In order to use the AHTx0 Sensor use the following settings:

Mandatory

Hardware

AHTx0 Sensor

Types : humidity, temperature

Address

<I2C Address>,[I2C Bus] where the I2C bus is optional
Ex: 0x38

Other settings can be found at the sensor setup information