Hall Effect Sensor on Arduino Using Fidget Spinner

Abstract
In this project I am explaining about how hall effect sensor works measuring fidget spinner speed with arduino board.
working:-
A Hall effect sensor is a transducer that varies its output voltage in response to a magnetic field. Hall effect sensors are used for proximity switching, positioning, speed detection, and current sensing applications. … In its simplest form, the sensor operates as an analog transducer, directly returning a voltage.
Applications:-
1. It measures the temperature and humidity
2.Measures a speed of a object.”

Link