This project aims to create a device which can measure and display the operating RPM and AFR of a small combustion engine. A Hall effect sensor is used to sense the magnet in the engine's flywheel ...

This project measures the rotation speed of a ceiling fan in RPM using an IR sensor module and an Arduino. The IR sensor module detects the movement of the fan blades, and the Arduino calculates the ...

Firstly, the ebay claim that it would be shipped from somewhere in the UK turned out to be false, and it took a day or two longer than the maximum estimated delivery time to arrive from the Far East – ...