Traffic Light V1 (without Ultrasonic Sensor Alarm)

this is a simple traffic light in a few days I will release a more advance version of this which has a ultrasonic sensor

1 breadboard

1 Arduino uno r3

1 battery pack (4 batteries)

3 leds (red, yellow, green)

some male to male jumper wires

paste the breadboard on the battery pack with the included adhesive double sided tape and paste the Arduino on the side of the battery pack with some double sided tape also add a switch on the battery pack if it does not include 1 (mine does so I did not put it in the supplies)

connect the female wire to a male to mall wire do this for positive and negative poles and then connect positive to vin and negative to any gnd

this is a simple but crucial step connect the gnd of the Arduino with a negative power rail

add all leds as shown it the picture then connect their gnd and their positive with pins with pins 2 - red 3- yellow 4- green if you are still confused you can check the image

install Arduino ide and the write this code or download it

[code]

int redLed = 2; // setting the value of redLed as 2.

int yellowLed = 3; // setting the value of yellowLed 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 (yellowLed,OUTPUT);// Defined yellowLed 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 (8000);// Giving a Gap of 8000 Milliseconds, 1 second = 1000 milliseconds.

digitalWrite (redLed,LOW);

digitalWrite (yellowLed,HIGH);

delay(3000);

digitalWrite(yellowLed,LOW);

digitalWrite(greenLed,HIGH);

delay(4000);

digitalWrite(greenLed,LOW);

}

[/code]