Blink LED

Description
The assignment required us to build a simple circuit to blink an LED using the ardouino microcontroller.

Components used:
- 220 ohm resistor (red red brown gold). 
- 1 green LED
- Bread board
- 1 Arduino Uno
- Connecting wires
 
Code

/*

Blink

Turns on an LED on for one second, then off for one second, repeatedly.

This example code is in the public domain.

I modified this example's duration

*/

// 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(2000); // wait for a second

digitalWrite(led, LOW); // turn the LED off by making the voltage LOW

delay(2000); // wait for a second

}