How to Make arduino based Digital Tachometer || RPM Meter|| TechSpark

In this tutorial, I will show how you can make a digital #Tachometer.
This meter is used in measuring the rotation speed of the shaft or disk.
This device usually displays revolution per minute that's why it is also called RPM meter. #digital_rpm_meter.

Circuit Diagram and Arduino code:-

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Components
1. Atmega328p microcontroller
2. Proximity IR sensor
3. LCD
4. 16MHz Crystal oscillator
5. 22pf ceramic capacitor x 2
6. Battery

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