SKU: SENS-2781
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Generic Linear Magnetic Hall Sensor Module - LM393 Comparator, Digital/Analog Output

₹44.00 (Inclusive of all taxes)
Out of Stock

This Linear Magnetic Hall Sensor Module provides a digital and analog interface for magnetic field detection, compatible with 3.3V and 5V logic systems like Arduino, Raspberry Pi, and ESP32. It features an adjustable LM393 comparator for precise sensitivity tuning and outputs a low-level signal upon magnetic detection.

Features

  • Dual Output Interface: Provides both digital (switch) and analog voltage outputs for flexible MCU integration.
  • Adjustable Sensitivity: On-board potentiometer allows fine-tuning of the magnetic detection threshold.
  • Wide Operating Voltage: Compatible with 3.3V to 5V DC power supplies, suitable for most development boards.
  • Integrated Indicator: Built-in LED provides a visual signal output indication for easy debugging.
  • Mounting Hole: Includes a retaining bolt hole for secure and convenient physical installation.

Out of stock

Description

This module utilizes a Hall-effect integrated circuit to convert magnetic flux density into a digital voltage signal. The internal circuitry includes a voltage regulator, Hall voltage generator, differential amplifier, Schmitt trigger, and temperature compensation, ensuring stable performance across its operating range. The primary digital output switches to a low logic level when a magnetic field exceeding the set threshold is detected.

The analog output (A OUT) provides a voltage proportional to the magnetic field strength, enabling more nuanced measurements. The on-board LM393 voltage comparator is responsible for the clean digital switching action. The module is designed for easy integration into prototypes and systems requiring non-contact magnetic sensing.

Key Features

  • Hall-Effect Sensing Principle: Detects magnetic fields based on the Lorentz force acting on charge carriers.
  • LM393 Wide-Voltage Comparator: Provides robust digital signal conditioning with adjustable hysteresis.
  • Dual-Mode Output: Offers both a clean digital switch signal and a raw analog voltage for advanced applications.
  • Compact & Mountable Design: Small footprint (35mm x 15mm) with a mounting hole for secure fixture.
  • Visual Feedback: Integrated LED illuminates when the digital output is active (low level).
  • Optimized Performance-to-Cost Ratio: Delivers reliable magnetic sensing functionality in a simple, high-value package.

Applications

  • Motor RPM and speed measurement using a magnet on the rotor.
  • Non-contact position detection in automated machinery and robotics.
  • Proximity sensing and limit switch replacement in industrial controls.
  • Magnetic field strength measurement and mapping for educational or R&D projects.
  • Security system triggers using concealed magnets on doors or windows.

Technical Specifications

Operating Voltage3.3V to 5V DC
Output SignalDigital Switch (Low-active) & Analog Voltage
Comparator ICLM393
Sensing PrincipleHall Effect
Dimensions (L x W)35 mm x 15 mm
Weight3 g
Primary OutputLow-level effective signal
Sensitivity ControlAdjustable via onboard potentiometer
IndicatorIntegrated output status LED
MountingSingle retaining bolt hole

Frequently Asked Questions

What is the operating voltage range for this Hall sensor module?

The module operates from 3.3V to 5V DC, making it directly compatible with common microcontroller platforms like Arduino (5V), Raspberry Pi (3.3V), ESP32, and STM32 without requiring a level shifter.

How do the digital (D OUT) and analog (A OUT) outputs work?

The digital output (D OUT) is a switch output from the LM393 comparator. It goes to a low logic level (0V) when the magnetic field exceeds the potentiometer-set threshold. The analog output (A OUT) provides a continuous voltage proportional to the strength of the detected magnetic field, which can be read by an MCU's ADC pin.

How do I adjust the sensor's sensitivity and what does the LED indicate?

Sensitivity is adjusted by turning the onboard potentiometer. Clockwise rotation typically increases the threshold, requiring a stronger magnet to trigger the output. The integrated LED lights up when the digital output is in its active (low) state, providing immediate visual feedback of a detection event.

Package Includes

  • 1 x Linear Magnetic Hall Sensor Module

Additional Information

Weight 0.003 kg
Dimensions 3.5 × 1.5 cm