Product description: AHT20 - I2C temperature and humidity sensor - Adafruit 4566.
Module with temperature and humidity sensorAHT20, which communicates viaI2Cinterface. It has only one I2C address, so it is not possible to use multiple sensors. It allows to measure temperaturefrom -40°C to 85°Cwith an accuracy of0.3°Cand humidityfrom 0% to 100% RHwith an accuracy of2%. Powered by3.3 V or 5 V. There are two STEMMA QT / Qwicc connectors on the board.
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Product compatible withArduinoandRaspberry Pi The manufacturer provides auser guideand a library forArduinoandRaspberry Pi. |
AHT20 temperature and humidity sensor.
Connection of AHT20 sensor
The AHT20 sensor communicates with the microcontroller via the I2C interface. It is powered by 3.3 V or 5 V. A dedicated STEMMA QT / Qwiic connector or standard 2.54 mm goldpin pins can be used for connection.
Example of connection with Adafruit Metro and Raspberry Pi.
| Pin | Description |
|---|---|
| VIN | Supply voltage 3.3 V or 5 V. |
| GND | The weight of the system. |
| SCL | I2C bus clock line. |
| SDA | I2C bus data line. |
Sensor specification AHT20
- Power supply voltage: 3.3 V or 5 V
- I2C address: 0x38
- Temperature measurement range: -40°C to 80°C (accuracy to 0.3°C)
- Moisture measurement range: from 0% to 100% (accuracy to 2%)
- Dimensions: 25.4 x 17.8 mm
Useful links |
