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Electromagnetic Field Detector - Arduino Uno

Electromagnetic Field Detector - Arduino Uno © GPL3+

A simple Electromagnetic Field Detector.

  • 23,944 views
  • 9 comments
  • 26 respects

Components and supplies

Apps and online services

About this project

This is one of the most basic EMF Detectors YOU can make! Using nothing more than an Arduino, some basic electronic components and a paperclip.

(Note: Use the paperclip as the antenna. For a higher sensitivity, replace the 100KOhm resistor for a stronger one)

Code

Arduino CodeArduino
int inPin = 3; 
int var = 0;
int pin11 = 5;

void setup() {
  Serial.begin(9600);
}
void loop() {
  var = analogRead(inPin);
  if(var >= 1){
    var = constrain(var, 1, 100;                        
    var = map(var, 1, 100, 1, 255);
    analogWrite(pin11, var);
   }else{
       analogWrite(pin11, 0);                     
  }
 Serial.println(var);
}

Schematics

Fritszing Breadboard
Be721bba15820a8063130b29dcd5d6ff
Fritszing schematic
450d609eb52b2ae0d5f57ba42a4be059

Comments

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