Published November 4, 2021 © GPL3+

Traffic Lights Using Arduino!!

Missing the traffic jam? Well Just make this and roleplay into a traffic jam.

BeginnerProtip11,666

Things used in this project

Hardware components

Arduino UNO

Breadboard (generic)

5 mm LED: Red

5 mm LED: Yellow

5 mm LED: Green

Resistor 330 ohm

Jumper wires (generic)

9V battery (generic)

9V Battery Clip

Software apps and online services

Arduino IDE

Story

In the times of Covid have you missed the everyday rustle and bustle of cars? Well, Personally I have and to imitate a few of the traffic jam scenarios I decided to create my own Traffic light signals.

I could even stick the leds out of breadboard into a cardboard but I am too too lazy to do that. If you want to do that you have to attach the jumper wires male to female with the male side on breadboard and female on Leds.

The Side corresponding to Resistor end should be connected to the positive terminal and you can directly connect the gnd from the -ve column of the breadboard.

I decided to make this project as I was too bored and this would be a good practice for my beginner skills in Arduino.

Code

BreadBoard_TrafficLights_v2

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);
}