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Arduino Mega 2560 Project 4: Hall Magnetic Sensor

Posted by Fiona Su on

Introduction
This is a Magnetic Induction Sensor. It senses the magnetic materials within a detection range up to 3cm. The detection range and the strength of the magnetic field are proportional. The output is digital on/off. This sensor uses the SFE Reed Switch - Magnetic Field Sensor.
Specification
  • Sensing magnetic materials
  • Detection range: up to 3cm
  • Output: digital on/off
  • Detection range and magnetic field strength are proportional
  • Size: 30*20mm
  • Weight: 3g

Connection Diagram

thumb

Sample Code

int ledPin = 13;                // choose the pin for the LED
int inputPin = 3;               // Connect sensor to input pin 3 
int val = 0;                    // variable for reading the pin status
 
void setup() {
  pinMode(ledPin, OUTPUT);      // declare LED as output
  pinMode(inputPin, INPUT);     // declare pushbutton as input
}
 
void loop(){
  val = digitalRead(inputPin);  // read input value
  if (val == HIGH) {            // check if the input is HIGH
    digitalWrite(ledPin, LOW);  // turn LED OFF
  } else {
    digitalWrite(ledPin, HIGH); // turn LED ON
  }
}

Project List

Buy it here>>Sensor Starter Kit For Arduino Mega 2560

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