Introduction

The DIY Metal Detector Kit is an educational electronics project that can detect metallic objects within 60mm range. Operating on 3V-5V DC power, this compact module is perfect for learning electromagnetic principles, security applications, or hobbyist treasure hunting.

Key Features

Technical Specifications

Pin Configuration

Pin	Label	Description
1	VCC	3-5V Power Input (Red wire)
2	GND	Ground (Black wire)
3	OUT	Digital Output (Yellow wire)
4	BUZ	Buzzer Connection (Blue wire)
5	LED	LED Indicator (Green wire)

Assembly Instructions

1. Prepare Components: Identify all parts using the included schematic
2. Install Resistors: Start with lowest height components first
3. Mount IC Socket: Observe proper orientation notch
4. Add Capacitors: Note polarity for electrolytic capacitors
5. Install Potentiometer: Secure firmly to PCB
6. Connect Coil: Solder pre-wound detection coil
7. Final Components: Add LED, buzzer, and power connector
8. Double Check: Verify all solder joints and component placements

Calibration Guide

Arduino Integration

// Metal Detector Digital Interface Example
const int detectorPin = 2;  // Connect to OUT pin
const int buzzerPin = 3;    // Connect to buzzer control

void setup() {
  pinMode(detectorPin, INPUT);
  pinMode(buzzerPin, OUTPUT);
  Serial.begin(9600);
}

void loop() {
  if(digitalRead(detectorPin) {
    tone(buzzerPin, 1000, 200); // Beep for 200ms
    Serial.println("Metal detected!");
    delay(500); // Debounce
  }
}

Detection Performance

Troubleshooting

Project Ideas