Linear Magnetic Hall Sensor

Description:

The Hall Effect Sensor Module is designed to detect the proximity of a magnet and is compact in size. When the magnetic field exceeds a specified threshold, the open-collector output transistor activates, pulling the logic-compatible output low and illuminating the onboard LED indicator.

This sensor is fast and operates within a turn-on threshold of 35–450 Gauss, with a minimum hysteresis of 20 Gauss. It functions within a voltage range of 4.5 to 24 volts and uses the Allegro Microsystems A3144EUA sensor. The module features a 3-pin interface: signal, V+, and GND.

To use the sensor, connect a 10K pull-up resistor between the “S” pin and the V+ pin, and attach the GND pin to ground. When a magnet is brought close, the “S” pin will go low (pulled to ground), turning on the onboard LED indicator.

Pin Configuration:

• VCC → 2.3V ~ 5.3V
• GND → Power supply ground
• AOUT → MCU.IO (Analog output)
• DOUT → MCU.IO (Digital output)

Applications:

• Motor speed measurement
• Object position detection
• Smart car
• Electronic bricks

Features:

• Features wide-range voltage comparator LM393
• Adjustable sensitivity
• Signal output indicator with retaining bolt hole for easy installation
• Output form: Digital switch output (0 and 1 high and low level)
• Signal output indication
• Single-channel signal output
• Output effective signal is low level
• When magnet is detected, outputs low level and LED indicator turns ON
• Can be used for sound-controlled light systems, alarms, and paired with other sensors

Specifications: