DIY Metal Detector Kit
Metal Detector Module
DIY Metal Detector Kit 3V-5V Non-Contact Sensor
Detect metals up to 60mm with adjustable sensitivity and audio/visual outputs.
The DIY Metal Detector Kit is an educational electronics project that detects metallic objects within a 60mm range. Operating on 3V-5V DC power, this compact module is ideal for learning electromagnetic principles, security applications, or hobbyist treasure hunting.
60mm
Detection Range
3V-5V DC
Operating Voltage
15-30mA
Current Consumption
Key features
Detection Range
Up to 60mm for coin-sized objects
Low Power
3V-5V DC operation, battery compatible
Adjustable Sensitivity
Precision potentiometer control
Dual Output
LED indicator plus digital signal output
Audio Alert
Buzzer output for audible detection
DIY Friendly
Through-hole components for easy assembly
Technical specifications
Pinout
Applications
Beach combing for coins and jewelry
Door/window security intrusion detection
Conveyor belt metal contamination monitoring
Educational electronics learning platform
Hobbyist treasure hunting
Industrial metal presence sensing
What's in the box
PCB board
Pre-wound detection coil
Electronic components (resistors, capacitors, IC socket)
Potentiometer, LED, buzzer, and connectors
Downloads
Datasheet (PDF)
Schematic Diagram
Assembly Instructions
Example Code (Arduino)
Arduino Example Code
cpp
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
}
}
Calibrate the sensitivity in the actual environment where you plan to use the detector, as nearby metal objects and electromagnetic interference can affect performance.
