use arduino to drive hall switch sensor

1) Objective：

Use Arduino to drive Hall Magnet speed sensor.

2)Parts and devices：

1 x Arduino UNO R3 or Arduino mega 2560

1 x USB cable

some jumper wires

1 x hall switch sensor

1 x magnet iron

3)Circuit graph

4)Download sample code from following link

hall_sensor download here

Unzip hall_sensor.rar file downloaded from above link, load it into Arduino IDE

5)Result：

When magnet is moving close to hall sensor，the red LED will turn on，arduino IDE serial monitor window(upper right corner of Arduino IDE) will show voltage value inspired by magnet