This module is based on the A3144E Hall switch sensor and it is designed to be used in applications requiring magnetic field sensing.
This module used to detect the presence of magnetic field. Whenever a magnetic field come near to sensor within its detection distance, it will output a signal on the output pin.
This module can be used in many projects like making a contactless switch for door alarm. It can also be used in making speedometer for car or a bike. If a magnet is attached to the wheel and this module in the stationary body, we can know the time taken to complete a cycle and by doing further calculation, we can calculate the speed. It can be used for sensing motor speed, position and more.
It features two outputs: AO, the analog signal output and DO, the digital output, after being passed through a voltage comparator. The Hall sensor outputs a low level voltage when magnetic field is detected.
