Contactless tachometer design for 4 stroke CDI ignition motorcycle with microcontroller for smart Rpm measurement

Measuring tools that still have shortcomings to support the maintenance and repair of motorcycles is the background of this research. One of the measuring tools commonly used in checking vehicles is the Rpm meter or also known as the Tachometer. The purpose of this research is to develop an existing Rpm meter product. The research method used is a level 3 development research method which produces research data on a comparison of errors between existing measuring instruments and the research design of 2%. In addition, data on the accuracy of the Rpm meter measurement of the researcher’s design was also obtained by 98%.