Arduino Tutorial: Tachometer (RPM Counter)

Making a tachometer with arduino has never been so easy. I am not only going to show how you can make your own, but also will mention the pros and cons of a few types of RPM sensors, mainly the IR proximity sensor and the hall effect sensor. Arduino sketches: - Simple tachometer (Serial): - Tachometer with ” OLED display: - Tachometer with Nextion display: Nextion display tachometer gauge (3.5” enhanced):