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README.org

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/b943a3f1c845589cf7874a83ef5984f21148a376/result.png

Pinout of the board

/coolneng/homeostasis/media/commit/b943a3f1c845589cf7874a83ef5984f21148a376/pinout.png

Dependencies

Deployment

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

  1. Upload the configuration file to the board:
pio run -t uploadfs
  1. Compile the project
pio run -t compile
  1. Upload firmware
pio run -t upload