How to Use Metal detector : Examples, Pinouts, and Specs

The Vedant Metal Detector (Part ID: 1) is an electronic device designed to detect the presence of metal objects using an electromagnetic field. This component is commonly used in a variety of applications including security screening, archaeological exploration, treasure hunting, and industrial metal detection.

• Security: Detection of concealed weapons at airports, courthouses, and events.
• Archaeology: Locating metal artifacts and historical items.
• Construction: Finding buried or hidden metal infrastructure.
• Hobbyist Treasure Hunting: Searching for coins, jewelry, and relics.

• Operating Voltage: 5V to 12V DC
• Current Consumption: 40mA (typical)
• Detection Range: Up to 20cm for large metal objects
• Operating Frequency: 7 kHz (approximate)
• Output Type: Digital signal (High when metal is detected)

1. Power Supply: Connect the VCC pin to a 5V-12V DC power source.
2. Output Signal: Connect the OUT pin to a digital input pin on a microcontroller, such as an Arduino UNO.
3. Grounding: Connect the GND pin to the common ground in the circuit.

• Ensure that the power supply does not exceed the maximum voltage rating.
• Avoid physical shocks and vibrations that could affect the sensitivity of the device.
• Keep the metal detector away from large metallic objects or electromagnetic fields when not in use to prevent false detections.
• Regularly calibrate the device if it provides adjustable sensitivity settings.

// Define the metal detector output pin
const int metalDetectorPin = 2;

void setup() {
  // Initialize the metal detector pin as an input
  pinMode(metalDetectorPin, INPUT);
  // Begin serial communication at 9600 baud rate
  Serial.begin(9600);
}

void loop() {
  // Read the state of the metal detector output
  int metalDetected = digitalRead(metalDetectorPin);
  
  // Check if metal is detected
  if (metalDetected == HIGH) {
    // Metal is detected, perform an action
    Serial.println("Metal detected!");
  } else {
    // No metal detected
    Serial.println("No metal detected.");
  }
  
  // Small delay to avoid spamming the serial output
  delay(500);
}

• False Positives: The device may occasionally signal metal detection even when no metal is present.
• Inconsistent Detection Range: The detection range may vary based on the size and type of metal.

• False Positives: Ensure the device is not near other metallic objects or electronic devices that could interfere with its operation.
• Inconsistent Detection Range: Calibrate the sensitivity if possible, and test with different types and sizes of metal to understand the detector's behavior.

Q: Can the metal detector differentiate between different types of metal? A: No, this basic metal detector does not differentiate between metal types; it only indicates the presence of a metal object.

Q: Is the metal detector waterproof? A: The standard model is not waterproof. Special care should be taken to avoid exposure to water or moisture.

Q: What is the maximum depth at which the metal detector can detect objects? A: The maximum detection depth is approximately 20cm for large metal objects, but this can vary based on object size and material.

Q: Can the metal detector be used to find gold? A: Yes, it can detect gold if the gold object is large enough and within the detection range of the device.

For further assistance or technical support, please contact Vedant customer service.