This is a simple sensor module that can detect moving or alternating magnetic fields, such as those found in rotating motors, moving magnets, linear magnets, and so on. With this module, you may create a contactless speed counter or speedometer to measure the rotation speed of a motor by counting its frequency. This module can also sense a door magnet, which is essential if you want to construct projects that include door sensing, window sensing, and so on.
Note: This sensor may operate in both analog and digital modes. Connect the analog output (AO) pin to Arduino to read voltage directly from the A3144 chip, or the digital output (DO) pin to detect the module’s processed output. Set the digital output (DO) sensitivity using the potentiometer (also known as a trimmer).
- Operating Voltage: 5V DC
- Digital Output 0V or 5V direct interface to a Microcontroller with LED indication
- Sensor: Allegro A3144 Hall-effect switch
- LM393 comparator with threshold preset
- PCB Size: 32x12mm
- Detector type: Magnetic Sensing Hall effect
- Detecting range: 7 mm LM393-based design
- Easy to use with Microcontrollers or even with normal Digital/Analog IC
- Small, cheap, and easily available
- 1 x Hall Effect Magnetic Sensor