## 4 Conclusions  
On the basis of microcontrollers, a monitoring and control system of environmental parameters of mushroom cultivation was developed. The main logic controller for environmental parameter monitoring consists of two levels: one level is for communication and receiving information from application sensors (communication board) and the other level is for information analysis and control of environmental conditions. Environmental parameters were monitored using CO\({}_{2}\), temperature and humidity modules (sensors). Appropriate devices such as air conditioners, fans, etc., are used to ensure the values of the environmental parameters based on the information received from the sensors. The control of these devices is performed by the main microcontroller, which is also used for the evaluation of sensor information. For each sensor, a printed circuit board was designed and manufactured separately, which are designed to transmit information to the MCU communication board. Since there are objects located in remote places and it is difficult to ensure a sufficient level of Wi-Fi connection between the individual components of the system, a local data transmission network based on the RS 485 interface and a pair of twisted wires were used in the production of this system prototype. To control the system, an optimal program algorithm was created, which allows to quickly and efficiently both receive and analyse information from environmental sensors, as well as to react quickly enough to deviations of environmental parameters. Attempting to make the work of the system as efficient and convenient as possible, a system management application was created using the Delphi programming language that allows the operator to quickly assess the progress of the process. In order to make the work as efficient as possible and to avoid human factor errors, the environment parameters support system also program-matically provides the \"auto\" work mode. These systems for maintaining and controlling the environmental parameters can be universal and can be adapted to the cultivation of any type of plant after the environmental control parameters and their limits, according to the conditions of plant cultivation, have been entered. In addition, if necessary, the capabilities of this prototype system can be expanded by adding environmental monitoring sensors and environmental control devices as required by the demand. The system was run in test mode and parameters were monitored for 24 h. As the results show, the control of application parameters using temperature, humidity and CO\({}_{2}\) sensors is stable and the deviations from the norm are permissible and do not exceed the deviations of the permissible values specified in most mushroom cultivation algorithms. During the process of growing mushrooms, both in the case of Shitiake mushrooms and in the case of champignons, environmental conditions were controlled in automatic mode. When growing both one and the other kind of mushrooms, the values of the environmental parameters were maintained during the entire cultivation cycle and there were no deviations from the cultivation requirements. The electric power of the entire mushroom cultivation system, which consists of a sensor system, a main controller, a data transmission network and devices supporting environmental parameters (fans, air conditioners, etc.) is about 3 kW. It is necessary to ensure a stable power supply for this system, since the mushroom growing process directly depends on the stability of the system. Part of the energy can be supplied by using wind or solar power as an additional source, using hybrid power systems. It is not recommended to power the mushroom cultivation system using only renewable energy sources, as the probability of energy supply instability increases, which directly affects the mushroom growth process. Conceptualization, Z.K. and I.S. ; methodology, G.G. ; software, I.S. ; validation, V.C., G.G. and Z.K. ; formal analysis, I.S. ; investigation, Z.K. ; resources, G.G. ; data curation, V.C.