SKU: SENS-2936
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DFRobot Gravity Linear Analog Hall Effect Sensor ±1200GS - PH2.0-3P Interface

₹349.00 (Inclusive of all taxes)
Out of Stock

The DFRobot Gravity Linear Analog Hall Effect Sensor is a high-precision magnetic field measurement module compatible with 3.3V/5V logic systems like Arduino, micro:bit, and DFRobot. It provides a bipolar analog voltage output proportional to magnetic field strength up to ±1200 Gauss.

Features

  • Bipolar analog output for N/S pole detection (±1200 Gauss range)
  • High-precision linear Hall effect IC with low-noise signal conditioning
  • 3.3V to 5V DC operation with Gravity PH2.0-3P interface
  • On-board detection indicator LED for visual status monitoring
  • Plug-and-play compatibility with Arduino and other microcontrollers

Out of stock

Description

This sensor utilizes a precision linear Hall effect integrated circuit at its core, converting magnetic flux density directly into a linear analog voltage signal. When the south pole of a magnet approaches the marked sensing surface, the output voltage rises above the quiescent midpoint; the north pole causes a proportional decrease below the midpoint. This bipolar response enables precise measurement of magnetic field polarity and strength.

The module includes onboard signal conditioning for stable output, minimizing susceptibility to supply voltage fluctuations. The compact form factor and Gravity connector system allow for rapid integration into prototyping environments, educational setups, and industrial control systems requiring accurate magnetic field monitoring.

Key Features

  • Bipolar magnetic field sensing for both north and south poles.
  • Linear analog voltage output proportional to magnetic flux density (±1200 GS).
  • Integrated low-noise amplifier ensures clean signal output.
  • On-board LED illuminates upon magnetic field detection for operational feedback.
  • Wide operating voltage range of 3.3V to 5V DC for flexible system integration.
  • Gravity PH2.0-3P interface enables plug-and-play connectivity with compatible cables.
  • Compact PCB design (32mm x 27mm) for space-constrained applications.
  • High-value build optimized for educational, prototyping, and light industrial use.

Applications

  • Motor speed and position sensing in robotics and BLDC motor control.
  • Non-contact current measurement via magnetic field around a conductor.
  • Proximity and presence detection of ferromagnetic objects in security systems.
  • Scientific measurement of magnetic field strength and polarity in lab setups.
  • Integrating into metal detection or sorting mechanisms.

Technical Specifications

Item TypeSensor Module
BrandDFRobot
Operating Voltage3.3V to 5V DC
Interface TypeGravity PH2.0-3P
Magnetic Range±1200 Gauss
Output SignalLinear Analog Voltage
Sensing PrincipleHall Effect
Polarity DetectionBipolar (N and S)
IndicatorOn-board Detection LED
PCB Dimensions (LxW)32 mm x 27 mm
Package Weight~0.025 kg

Frequently Asked Questions

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

The module operates from a single DC supply between 3.3V and 5V. This makes it directly compatible with common microcontroller logic levels from platforms like Arduino, ESP32, and Raspberry Pi Pico without requiring additional level shifting.

How do I interpret the analog output voltage from this sensor?

The sensor outputs a linear analog voltage relative to the magnetic field strength and polarity. With no magnetic field present, the output rests at approximately Vcc/2. A south pole magnet facing the marked sensing side increases the voltage above this midpoint, while a north pole decreases it. The magnitude of change is proportional to the field strength.

Can this sensor detect both north and south magnetic poles?

Yes, this is a bipolar linear Hall effect sensor. It can distinguish between north and south poles based on whether the output voltage deviates below or above its quiescent center voltage. This allows for directional magnetic field sensing, unlike unipolar switches that only detect the presence of a field.

What is the purpose of the onboard LED?

The integrated LED serves as a visual detection indicator. It illuminates when a magnetic field of sufficient strength (regardless of polarity) is present near the sensor's active area. This provides immediate, at-a-glance feedback during setup, testing, and calibration without requiring an oscilloscope or serial monitor.

Package Includes

  • 1 x DFRobot Gravity Linear/Analog Hall Sensor Module
  • 1 x Gravity Analog Sensor Cable for Arduino (30cm length, PH2.0-3P)

Additional Information

Weight 0.025 kg
Dimensions 3.2 × 2.7 cm