Simple Arduino Traffic Lights

Have you ever made a city out of Legos? I know i have built many of them but they all missed something... Traffic lights!
So i decided to make my very own traffic light setup from my arduino board.

Step 1 You will need:

You will need:

An arduino board
Red, Green and amber LED's
Three 220 Ohm Resistors

Optional:

Wire
and an Protoshield

Comments

[biomech75]

Nice job ...but here is the fix for the red,yellow, green. It is incorrect The traffic lights goes as follows green, yellow,red... then red,green (not red,yellow.green).
Enjoy;)
CODE:

int greenled = 8; //Led's and pins
int yellowled = 9;
int redled = 10;

void setup()
{
pinMode(greenled, OUTPUT); //Pinmodes of the leds
pinMode(yellowled, OUTPUT);
pinMode(redled, OUTPUT);
}

void loop()
{
digitalWrite(greenled, HIGH); //Green on for 5 seconds
delay(5000);
digitalWrite(greenled, LOW); //Green off, yellow on for 2 seconds
digitalWrite(yellowled, HIGH);
delay(2000);
digitalWrite(yellowled, LOW); //yellow off, red on for 5 seconds
digitalWrite(redled, HIGH);
delay(5000);
digitalWrite(redled, LOW); //Red and Yellow off
digitalWrite(yellowled, LOW);
}

[bjarni1995]

As I said, this is according to icelandic (european?) standards, not American

[biomech75]

Ok My bad

[Baqutain]

Thanks for this useful materiel

[atif khair]

The arduino device is using in the traffic lED lights that make it more attractive.
Jaycon

[B2BSurvivor]

Thanks again for responding. Yes, I am quite familiar with Google, and sorry if this isn't the "right place" to ask. BUT when I went to Google and found the Arduino home page, the Arduino was described as an "open source electronics prototype platform" etc. All I wanted was a simple answer, because I had no clue after reading the home page. So thanks, again. Obviously I am not an electronics hobbyist. Just trying to catch up a little on the technology. By the way, "lingo is an old slang term for "language" and "loop" is another old, outdated slang term for "information loop" or in other words, "lingo loop" would mean "techno speak", referring to the language of the "informed electronics technical people" like you.

[B2BSurvivor]

Thanks for your reply to my comment. All I meant was that I am new to some of the terminology and behind in the technology, What is an Arduino?
Thanks,
B2Bsurvivor

[bjarni1995]

Well, i don't think this is the right place to ask that but i'll give you the short answer. Arduino is a very popular Microcontroller among hobbyists, like me.

Hope that answers your question ad remember, "Google is your best friend"

[B2BSurvivor]

Looks like a great project. So please help me out here, I'm out of the lingo loop. What is the Arduino reference all about?

[bjarni1995]

Hmmm, I don't really know what you mean? "Lingo Loop" never heard of that? Help me out here so i can help you ;)

[Robot Lover]

Good instructable! This is great for beginner arduino users! Brotip: only one resistor is required, put it between the LED's ground and arduino ground. this helps save resistors for other projects!