Add to ORKGThe bachelor´s thesis is dealing with design and realization of contactless rotation sensor based on stroboscope method. As the source of the light should be used power LED. The first part briefly deals with the scanning speed and a more detailed description of the stroboscope method, it´s advantages and disadvantages. The second part of this thesis is about designing and implementation of the measurement device, i.e. designing the block diagrams, electric circuit designing and the execution itself. It analyzes each part of the electric circuit and justifies their selection and design. In the last phase of this bachelor´s thesis is made the measurement of the device and were determinated it´s properties