Speed Measurement Trainer Using Photoelectric and Tachometer This unit consists of DC motor, Speed Sensor, Power driver, tachometer etc. To measure the Speed of DC Motor.12V DC motor fixed on the metal plateOptical (photo electric) type sensor to sense the speed of the motorMOSFET Based power driver to drive the motor supplyDC voltage source (0-5V) to vary the motor speedRegulated Power SupplyDigital Display to indicate the motor speed in Rpm.Digital Tachometer to indicate the motor speed .Battery operatedLED/LCD displayCompact modelAll components are mounted in an attractive powder coated metal cabinet