homeostasis/README.org

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Homeostasis

Temperature, air humidity and soil humidity sensor that communicates via MQTT. The project is implemented using a Wemos D1 mini board with the following components:

  • DHT22 temperature and humidity sensor
  • FC-28 soil hygrometer sensor
  • Battery shield
  • 3.7V 1000mAh Lithium battery

The sensor captures the data every 15 minutes and sends it to a MQTT broker and then enters deep sleep, it is important to save power as the device runs off a battery.

/coolneng/homeostasis/media/commit/7bdf50a34fca175eefe1f1ae1ac26cf8f721a9a1/result.png

Pinout of the board

/coolneng/homeostasis/media/commit/7bdf50a34fca175eefe1f1ae1ac26cf8f721a9a1/pinout.png

Deployment

The software uses the Arduino framework and the development environment of PlatformIO, which offers better tools than the Arduino IDE.