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Temperature, air humidity and soil humidity sensor that communicates via MQTT. The project is implemented using a Wemos D1 mini board with the following addons: Temperature, air humidity and soil humidity sensor that communicates via MQTT. The project is implemented using a Wemos D1 mini board with the following addons:
- DHT11 temperature and humidity - DHT11 temperature and humidity sensor
- FC-28 soil hygrometer sensor - FC-28 soil hygrometer sensor
- Battery shield - Battery shield
- 3.7V 1000mAh Lithium battery - 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.
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[[./result.png]]
** Pinout of the board ** Pinout of the board
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[[./pinout.png]] [[./pinout.png]]
** Dependencies
- [[https://github.com/adafruit/DHT-sensor-library][Adafruit DHT sensor library]]
- [[https://github.com/adafruit/Adafruit_Sensor][Adafruit Unified Sensor Driver]]
- [[https://github.com/knolleary/pubsubclient][PubSubClient]]
- [[https://github.com/bblanchon/ArduinoJson][ArduinoJSON]]
** Deployment
The software uses the Arduino framework and the development environment of [[https://platformio.org/][PlatformIO]], which offers better tools than the Arduino IDE.

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