Conecting a Reed Switch with Arduino

reed-switch-test.ino

/*
 * AJ Alves (aj.alves@zerokol.com)
*/

const int REED_SWITCH_PIN = 3; // Reed Switch Pin

void setup() {
  Serial.begin(9600); // Init serial 9600
  pinMode(REED_SWITCH_PIN, INPUT); // Set pin as INPUT
}
void loop() {
  int rsState = digitalRead(REED_SWITCH_PIN); // Reading pin value
  
  if (rsState == HIGH) {
    Serial.println("I can feel the magnet!");
  } else {
    Serial.println("Where is the magnet?");
  }
  delay(1000); // Wait for 1 second
}