Contactless revolutions counter for rotary machines

The Bachelor's Thesis consists of two parts. At first it deals with methods of the speed rotary measurement summary from history to the current methods applied. In the second part we can see a project and the actual production of the strobe rotation speed scanner and IR rotation speed scanner. All it is implemented in the solderless breadboard and under employment of the development kit EvB 4.3 based with the microcontroller Atmega 644p