Develop of a Low Cost IoT System for the Moisture and Nutrient Soil Monitoring

The Internet of Things (IoT) technologies have promoted important advanced to achieve the sustainability in crop production. Precision Agriculture have been a technological paradigm which has been adopted for the innovation agricultural techniques in order to improve production and reduce environmental pollution. In this paper, we propose an IoT device which has been used to monitor the crops using a moisture and nutrient soil sensor. We use ESP32 micro-controller for signal processing of sensor. ESP32 micro-controller transmits the data signal of the sensor to Raspberry Pi Web server. Raspberry Pi 4 hosts the web application with a transactional database system and dynamic content using Flask framework. The Backend manages and process the data which are generated by IoT device. The Back-end infrastructure includes the data storage of the nutrients and moisture of soil using MariaDB open source database. The Front-end provides the user interface which allows to the users interact, to manage the IoT device and to analyses the soil nutrients of the soil using a dashboard in real time. An analysis of the capabilities of the IoT system are presented for four types of plants.