Hall Effect Sensor Module

The Hall Effect Sensor Module is a versatile and reliable device designed to detect the presence and strength of a magnetic field. Using the Hall Effect principle, it provides digital or analog output that responds to magnetic flux density, enabling contactless switching, proximity detection, and rotational speed measurement.

This module easily interfaces with Arduino, Raspberry Pi, NodeMCU, and other microcontrollers, making it a perfect solution for robotics, automotive, and industrial automation applications.

🔹 Key Features

• Magnetic Field Detection: Senses north or south pole magnetic fields with high accuracy.

• Digital Output (or Analog variant): Outputs HIGH/LOW signal when a magnetic field is detected.

• Adjustable Sensitivity: Onboard potentiometer (for certain models) allows fine-tuning.

• Low Power Consumption: Suitable for battery-operated devices.

• Easy Integration: Standard 3-pin interface (VCC, GND, Signal) for breadboards or PCBs.

🔹 Technical Specifications

• Operating Voltage: 3.3 V–5 V DC

• Sensor Type: Hall Effect (typically A3144 or similar)

• Output Type: Digital (high/low) or analog depending on variant

• Response Time: < 1 µs for rapid magnetic changes

• Current Consumption: ~8 mA typical

• Detection Distance: Up to 10 mm (depends on magnet strength)

• Dimensions: ~32 mm × 14 mm × 5 mm

• Operating Temperature: –40 °C to +85 °C

🔹 Applications & Use Cases

• Proximity Sensing: Detect doors or panels opening/closing without contact.

• Rotational Speed Measurement: Count wheel or motor rotations using a magnet for Arduino RPM sensors.

• Contactless Switches: Create magnetic toggle switches for smart home projects.

• Robotics & Drones: Integrate with Drones or autonomous vehicles for position feedback.

• Industrial Automation: Monitor conveyor belts or detect magnetic parts.

• IoT Projects: Pair with NodeMCU for smart sensing.

🔹 Advantages for Makers & Engineers

• Simple interface for Arduino and Accessories and Raspberry Pi.

• Robust, solid-state design with no mechanical wear or contact.

• Works in dusty or harsh environments where mechanical switches fail.

🔹 Safety & Precautions

• Avoid strong electromagnetic interference for best accuracy.

• Use regulated voltage to protect the sensor and microcontroller.

• Ensure proper orientation of the magnet for reliable detection.

🔗 Helpful Internal Links

• Browse Electronics Components for compatible magnets and accessories.

• Check Tools and Accessories for installation aids.

🎥 Video Tutorial

[YouTube tutorial link here]

📝 Product Summary

The Hall Effect Sensor Module offers precise, contactless magnetic field detection with easy digital output, making it ideal for Arduino, Raspberry Pi, robotics, automation, and IoT projects.