The A3144 Hall Effect Detection Sensor Module is a compact and reliable magnetic field sensing module designed for embedded electronics, robotics, automation, and motion detection applications. At its core is the A3144 Hall effect sensor, which produces a clear digital signal when exposed to a magnetic field — making it ideal for detecting the presence, proximity, speed, or direction of magnets or magnetic materials.

Operating across a wide voltage range (3.3V to 24V DC), this module outputs a digital signal that changes state when a magnetic field crosses its threshold. The 3-pin interface (VCC, GND, OUT) makes it compatible with popular microcontroller platforms such as Arduino, AVR, PIC, ARM, and more. For boards with 3.3V logic (like Raspberry Pi or ESP32), the output can be connected directly or through a level shifter depending on logic requirements.

The board includes a built-in pull-up resistor and indicator LED, simplifying integration and letting you visually confirm sensor activation during testing. Its fast response and clean digital output make the A3144 Hall sensor ideal for tasks such as RPM measurement, wheel speed sensing, position detection, proximity switching, encoder feedback, robot odometry, and magnetic triggers.

Whether you’re building a line-tracking robot with magnetic encoders, door or shaft position detector, or a magnetically triggered counter, this Hall effect sensor module provides stable, noise-resistant performance even in dynamic environments. The compact form factor also makes it easy to mount on PCBs, chassis, or sensor arrays for larger systems.