Microcontroller control system of land plots irrigation with data exchange

A microcontroller system running the mobile application for the Android operating system, which allows monitoring and control of the land plots irrigation system, is offered. An autonomous irrigation system for many plots of land under the control of many microcontroller systems based on NodeMCU has been developed. In the context of global warming, the development of efficient and relatively inexpensive systems of automated irrigation of land for the full cultivation of different crops is becoming relevant. Automatic irrigation of crops allows to increase their productivity considerably at rather small expenses. The developed system of automated irrigation does not require significant investments and has the optimum price / quality ratio, is easy to use and has technical capabilities to increase the number of land plots for automated irrigation. The automated irrigation system includes: solar panels, frequency converter, pump, water tank, electronic water valve, microcontroller system and irrigation units. The microcontroller system consists of the following components: microcontroller board, air temperature and humidity sensors, real time clock, upper and lower water level sensors, control relay for water pump and solenoid valve for water. Special MQTT protocol is used to communicate with the microcontroller system and the user. This protocol is commonly used in M2M (Machine-Machine Interaction) and IIoT (Industrial Internet of Things) systems. The MQTT Dashboard mobile application developed for the Android operating system is used to control and monitor the irrigation system. With the developed mobile application, it is possible to control four microcontroller systems. Up to five irrigation sections can be controlled by one microcontroller system. The control of five or more microcontroller systems from a mobile application requires an additional fee for server maintenance