In the article, the using of three computer programs was considered step-by-step. These programs are "Arduino IDE", "Modbus OPC Universal Master Server" and "Master Scada". They are using for creating projects of automation for public catering enterprises. There is an example of automation of the hot shop in this article, which demonstrates us the methods of engineering based on the modern digital technologies. If you want to learn how to create the projects using these programs, for the beginning, we recommend you to repeat our demonstration project. In the represented methods, we recommend using the integrated sensors for measuring options of technological processes of production dishes. Modern sensors of temperature, pressure, moving and humidity are adapting with microcontrollers very good. This fact allows to create compact, inexpensive devices for primary collection and processing of information. There was been showed the method of transferring of collected information to the computer of the supervisor on the example of created OPC-server. The supervisor can look for the processes, which are happening in the hot shop of the public catering establishment. The supervisor’s remote control is developed on the base of the «Master Scada» program. This is one of the most popular automation program. Creators of the «Master Scada» say that this program is widely used in such companies as «Gazprom» and «Rosatom». The wide possibilities of this program allow us in the three-dimensional graph to represent the objects of automation, to accelerate the executive and regulating mechanisms that are on the screen in front of the dispatcher. The practical example, which was demonstrated in this article, is limited by three mnemonic diagrams. First of them is the splash screen of the hot shop with the menu of the transiting to the mnemonic diagram of the controlling of the food-brewing boiler and the electrical frying cupboard. If operator switches over to mnemonic diagram of the food-brewing boiler, he sees the degree of filling boiler by the cooking liquor, the temperature of this liquor and time of the cooking. Using the control buttons operator can make changes to the program of cooking his dish. The program also looks for emergency modes, in particular, to prevent dry running..

microcontroller, OPC server, mnemonic diagram, digestion boiler.

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