Lab 1: Blinking LED

Description:
Construct a flashing LED using the Arduino and an LED, using a potentiometer to moderate the through current. Copied and Pasted first Arudino code from Arduino website.
Components:
1 - Arduino
1 - Breadboard
1 - 220 Ohm Potentiometer
1 - LED
1 - Mac OSX with Arduino software installed
4 - Electrical wires for connecting components
Code:
/*
  Blink
  Turns on an LED on for one second, then off for one second, repeatedly.
 
  This example code is in the public domain.
 */
 
// Pin 13 has an LED connected on most Arduino boards.
// give it a name:
int led = 13;

// the setup routine runs once when you press reset:
void setup() {                
  // initialize the digital pin as an output.
  pinMode(led, OUTPUT);     
}

// the loop routine runs over and over again forever:
void loop() {
  digitalWrite(led, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(1000);               // wait for a second
  digitalWrite(led, LOW);    // turn the LED off by making the voltage LOW
  delay(1000);               // wait for a second
}