Computer vision is an important tool in automatization of individual procedures. This is especially true in cases where the human concentration falls due to the length of the procedure. In the Iskraemeco d.d. company, in the Research and Development section, we came to the realization that the tool would be just as useful for testing the firmware that runs in electronic meters of electricity. In this project, we used verified algorithms to capture and properly process images. This is OpenCV open-source library, which we have integrated into the whole using the Python programming language. Nevertheless, some program’s functions had to be developed by ourselves. We used the Logitech c920 webcam for real time images capture. In the end, we also tested the newly developed tool. This was done using automated tests that we developed using the Visual Studio 2017 programming environment and the C# programming language. In this phase, we have already discovered the first bugs of meter’s firmware and so showing the utility of the tool.