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Metal Detector Non-Contact Induction Sensor Module

Specification	Details
Operating Voltage	3V to 5V DC
Detection Range	1mm to 5mm (variable by metal type)
Output Type	Digital (High/Low)
Sensor Type	Inductive Proximity
Current Consumption	<10mA (Idle)
Operating Temp	-10°C to +50°C
Indicator	Onboard Detection LED

Price

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₹ 161.02

(Tax included)

Barcode: 554333

Product Description

The Metal Detector Module is a "plug-and-play" solution for identifying ferrous and non-ferrous metals. It features an onboard potentiometer that allows users to fine-tune the sensitivity and detection threshold, ensuring it can ignore small metallic interference while focusing on target objects. The module is compact and breadboard-compatible, featuring a standard 3-pin header (VCC, GND, OUT) that connects directly to an Arduino, Raspberry Pi, or any microcontroller without the need for external voltage dividers or complex circuitry.

Key Features

Non-Contact Detection: Reduces wear and tear as the sensor never needs to touch the object it is detecting.
Adjustable Sensitivity: The multi-turn trimmer allows for precise calibration based on the specific metal type (Iron, Aluminum, Copper, etc.).
Real-time Feedback: Includes a built-in LED that glows instantly when metal is detected, simplifying the debugging process.
Low Power Logic: Designed to work on 3.3V and 5V systems, making it compatible with modern IoT boards like the ESP32.
Wide Application: Suitable for industrial limit switches, metallic material sorting, and DIY treasure hunter prototypes.

Technical Details

Module Size: Approx. 35mm x 15mm.
Response Time: Microseconds (Real-time detection).
Mounting Hole: Includes a 3mm hole for secure chassis mounting.

Prototyping and Engineering Tips from Robogears

Material Sensitivity: Not all metals are detected equally. Iron (Ferrous) provides the maximum detection distance, while Aluminum and Copper (Non-Ferrous) may require the object to be significantly closer to the sensor coil.
The Potentiometer "Sweet Spot": To calibrate, place your target metal at the desired distance and turn the potentiometer until the LED just turns on. Then, remove the metal and ensure the LED turns off. Avoid setting it to maximum sensitivity, as ambient electromagnetic noise can cause "ghost" triggers.
Isolation from Motors: If using this on a robot, mount the sensor away from large DC motors. The magnetic fields generated by the motor coils can interfere with the sensor's inductive field, leading to erratic readings.
Mounting Orientation: For the best results, the metal object should approach the flat face of the inductive coil (usually the side opposite the components). Metal approaching from the sides may not be detected as reliably.

Package Includes

1 x Metal Detector Non-Contact Induction Sensor Module

Disclaimer

This is a short-range proximity sensor (up to 5mm) and is not intended for deep-ground treasure hunting. It should only be used within the specified 3V–5V voltage range.

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