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Detailed Product Description:

The Metal Detector Sensor Module is an invaluable component for any project that requires reliable, non-contact metal detection. This compact sensor operates on the principle of electromagnetic induction. It generates a high-frequency magnetic field from its internal coil, and when a metallic object—be it ferrous or non-ferrous—enters this field, it induces eddy currents. This phenomenon causes a change in the module's inductance, which is precisely detected by its internal circuitry, triggering an output signal.

This sensor is designed for seamless integration into your projects. It typically operates on a low-voltage DC power supply, such as 3V to 5V, making it perfectly compatible with popular microcontrollers like Arduino and Raspberry Pi. The module provides a straightforward digital output, sending a simple HIGH or LOW signal to your microcontroller, indicating the presence or absence of a metallic object. Many modules also include a built-in LED and a buzzer for an immediate visual and audible alert. A key technical feature is the onboard potentiometer, which allows you to easily adjust the sensor's sensitivity and fine-tune its detection range—often up to several centimeters—to match your specific application.

From building a miniature treasure-hunting robot to creating an automated system for counting metallic parts on a conveyor belt, this inductive detection sensor is a cornerstone of many DIY electronics projects. It's a reliable, low-cost solution for applications in robotics, security, and industrial automation where a robust and fast response to the presence of metal is essential.

The Metal Detector Sensor Module is an easy-to-use inductive proximity sensor that detects the presence of metal objects without physical contact. It provides a digital high or low output when metal is detected, making it ideal for projects involving security detection, object sorting, or robotic navigation.

With a detection range of a few centimeters and a high sensitivity coil, it can accurately sense metal changes in its environment. It can be directly connected to a microcontroller's digital input pin, such as an Arduino, for simple plug-and-play use.

Key Features:

• Detects presence of ferrous and non-ferrous metals

• Compatible with Arduino, Raspberry Pi, ESP32, STM32

• Digital output (DO) signal on metal detection

• Used in security systems, automation, metal proximity sensing

• Compact and easy to integrate into DIY electronics and robotic projects

Technical Specifications:

How to Use:

1. Connect the sensor to Arduino:

   • VCC → 5V

   • GND → GND

   • D0 → Digital Pin (e.g., D2)

2. Upload the following sample Arduino code:

3. Bring a metal object close to the coil – the LED turns on, and signal is triggered.

Applications:

• Security & anti-theft metal detection systems

• Robotics – metal surface navigation or object detection

• Automation systems and industrial sensing

• STEM education, hobby, and DIY electronics

• Sorting and assembly lines

Package Includes:

• 1 × Metal Detector Sensor Module