This device is an outdoor battery powered temperature & humidity sensor compatible with Amazon Alexa.
To permit Amazon Alexa integration is used the Sinric Pro service (https://sinric.pro).
- Battery powered
- Compatible with Amazon Alexa
- Configurable Deep Sleep time to save battery life
- Sinric Pro account
The hardware composition is the following:
- NodeMCU ESP32
- DHT22 Temperature & Humidity sensor
- 18650 3.7V Li-Ion battery
| ESP32 | DHT22 |
|---|---|
| 3V3 | + |
| GND | - |
| D5 (GPIO5) | OUT |
The sketch is derived from the examples stored in Sinric Pro official GitHub page. It's edited to permit the Deep Sleep mode so that the Outdoor Alexa TH Sensor can be powered by a 18650 battery and keeps the battery alive as long as possible.