Traffic Lights Using Arduino!!

1int redLed = 2; // setting the value of redLed as 2.
2int blueLed =   3; // setting the value of blueLed as 3.
3int greenLed = 4;// setting the value   of greenLed as 4.
4
5void setup() {
6  // put your setup code here, to run   once:
7pinMode (redLed,OUTPUT);// Defined redLed as output.
8pinMode (blueLed,OUTPUT);//   Defined blueLed as output.
9pinMode (greenLed,OUTPUT);// Defined greenLed as output.
10}
11
12void   loop() {
13  // put your main code here, to run repeatedly:
14digitalWrite (redLed,HIGH);//   Sending a signal to Pin redLed to Light Up.
15delay (3000);// Giving a Gap of 3000   Milliseconds, 1 second =  1000 milliseconds.
16digitalWrite (redLed,LOW);
17digitalWrite   (blueLed,HIGH);
18delay(1000);
19digitalWrite(blueLed,LOW);
20digitalWrite(greenLed,HIGH);
21delay(3000);
22digitalWrite(greenLed,LOW);
23}
24

int redLed = 2; // setting the value of redLed as 2.
int blueLed =   3; // setting the value of blueLed as 3.
int greenLed = 4;// setting the value   of greenLed as 4.

void setup() {
  // put your setup code here, to run   once:
pinMode (redLed,OUTPUT);// Defined redLed as output.
pinMode (blueLed,OUTPUT);//   Defined blueLed as output.
pinMode (greenLed,OUTPUT);// Defined greenLed as output.
}

void   loop() {
  // put your main code here, to run repeatedly:
digitalWrite (redLed,HIGH);//   Sending a signal to Pin redLed to Light Up.
delay (3000);// Giving a Gap of 3000   Milliseconds, 1 second =  1000 milliseconds.
digitalWrite (redLed,LOW);
digitalWrite   (blueLed,HIGH);
delay(1000);
digitalWrite(blueLed,LOW);
digitalWrite(greenLed,HIGH);
delay(3000);
digitalWrite(greenLed,LOW);
}

BreadBoard_TrafficLights_v2

arduino

1int redLed = 2; // setting the value of redLed as 2.
2int blueLed =  3; // setting the value of blueLed as 3.
3int greenLed = 4;// setting the value  of greenLed as 4.
4
5void setup() {
6  // put your setup code here, to run  once:
7pinMode (redLed,OUTPUT);// Defined redLed as output.
8pinMode (blueLed,OUTPUT);//  Defined blueLed as output.
9pinMode (greenLed,OUTPUT);// Defined greenLed as output.
10}
11
12void  loop() {
13  // put your main code here, to run repeatedly:
14digitalWrite (redLed,HIGH);//  Sending a signal to Pin redLed to Light Up.
15delay (3000);// Giving a Gap of 3000  Milliseconds, 1 second =  1000 milliseconds.
16digitalWrite (redLed,LOW);
17digitalWrite  (blueLed,HIGH);
18delay(1000);
19digitalWrite(blueLed,LOW);
20digitalWrite(greenLed,HIGH);
21delay(3000);
22digitalWrite(greenLed,LOW);
23}
24

int redLed = 2; // setting the value of redLed as 2.
int blueLed =  3; // setting the value of blueLed as 3.
int greenLed = 4;// setting the value  of greenLed as 4.

void setup() {
  // put your setup code here, to run  once:
pinMode (redLed,OUTPUT);// Defined redLed as output.
pinMode (blueLed,OUTPUT);//  Defined blueLed as output.
pinMode (greenLed,OUTPUT);// Defined greenLed as output.
}

void  loop() {
  // put your main code here, to run repeatedly:
digitalWrite (redLed,HIGH);//  Sending a signal to Pin redLed to Light Up.
delay (3000);// Giving a Gap of 3000  Milliseconds, 1 second =  1000 milliseconds.
digitalWrite (redLed,LOW);
digitalWrite  (blueLed,HIGH);
delay(1000);
digitalWrite(blueLed,LOW);
digitalWrite(greenLed,HIGH);
delay(3000);
digitalWrite(greenLed,LOW);
}

Downloadable files

BreadBoard_Traffic_Lights

I have used a 220 ohms resistor in schematic but I recommended using a 330 ohms resistor. Also White Leds have been used in place of yellow and green leds, Wiring color should help identify which one where

BreadBoard_Traffic_Lights

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valnaut

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