Connect a basic Reed switch?

Using Arduino Sensors
4

Thanks for your help, I used the "debounce" code as a start and have managed to connect the reed :), I used the serial monitor to display when the pin goes from 1 to 0 with the magnet attached and it works fine. I have a question about the Reed, when I connect it directly through the 5V and Ground on the Arduino and close the switch with a magnet I get a LED light in the switch. However when I hook the 5V to Pin 7 and ground to Arduino I can read the change but the LED doesn't light? Any Ideas?

Thanks

Geoff

// constants won't change. They're used here to 
// set pin numbers:
const int ReedPin = 7;     // the number of the Reed Switch pin
const int ledPin =  13;      // the number of the LED pin

// Variables will change:
int ledState = HIGH;         // the current state of the output pin
int ReedState;             // the current reading from the input pin
int lastReedState = LOW;   // the previous reading from the input pin

// the following variables are long's because the time, measured in miliseconds,
// will quickly become a bigger number than can be stored in an int.
long lastDebounceTime = 0;  // the last time the output pin was toggled
long debounceDelay = 50;    // the debounce time; increase if the output flickers

void setup() {
  pinMode(ReedPin, INPUT);
  pinMode(ledPin, OUTPUT);
Serial.begin(9600);
}

void loop() {
  // read the state of the switch into a local variable:
int Reed_Val = digitalRead(ReedPin);

  // check to see if you just pressed the button 
  // (i.e. the input went from LOW to HIGH),  and you've waited 
  // long enough since the last press to ignore any noise:  

  // If the switch changed, due to noise or pressing:
 if (Reed_Val != lastReedState) {
    // reset the debouncing timer
    lastDebounceTime = millis();
  } 
  
  if ((millis() - lastDebounceTime) > debounceDelay) {
    // whatever the reading is at, it's been there for longer
    // than the debounce delay, so take it as the actual current state:
    ReedState = Reed_Val;
  }
  
  
  digitalWrite(ReedPin, HIGH);
  
  Serial.println(Reed_Val);

  // save the reading.  Next time through the loop,
  // it'll be the lastButtonState:
  lastReedState = Reed_Val;
}