AM2301 - stodev-com-br/Tasmota GitHub Wiki

AM2301 driver supports AM2301 (DHT21), AM2302 (DHT22) and AM2321 temperature and humidity sensors.

Introduced in Tasmota through Sonoff AM2301 accessory for Sonoff TH.

This driver is ONLY for single wire implementations of the sensor.

Configuration

Wiring

AM2301 ESP266
- GND
OUT GPIOx
+ 3.3V

Tasmota

In the Configuration -> Configure Module page assign:

  • GPIOx to AM2301 (2)

After a reboot webUI will display temperature and humidity measured.

image

Sensor sends a tele/%topic%/SENSOR JSON reponse:

{
  "Time": "2019-01-01T00:00:00",
  "AM2301": {
    "Temperature": 24.6,
    "Humidity": 58.2
  },
  "TempUnit": "C"
}

Commands

TempOffset can be used for calibrating the measured temperature. This setting affects all temperature sensors on the device.

Wemos DHT Shield

Like the Wemos DHT11 shield specs the DATA OUT pin of Wemos DHT22 is connected to D4 of the Wemos.

image

Tasmota Configuration

In the Configuration -> Configure Module page, select the following:

  • D4 GPIO2 : 02 AM2301

Sensors

Read more about differences between sensors.

image