Simple Traffic Light System

Simple Traffic light system

You will need:

3 LEDs

Jumper cables

Uno Board

USB cable

You will be able to make a simple traffic light system with this code:

// Define pin numbers for the LEDs const int redPin = 8; const int yellowPin = 9; const int greenPin = 10; void setup() { // Set all LED pins as outputs pinMode(redPin, OUTPUT); pinMode(yellowPin, OUTPUT); pinMode(greenPin, OUTPUT); } void loop() { // Red light on, yellow and green off digitalWrite(redPin, HIGH); digitalWrite(yellowPin, LOW); digitalWrite(greenPin, LOW); delay(10000); // Wait for 10 seconds // Green light on, red and yellow off digitalWrite(redPin, LOW); digitalWrite(yellowPin, LOW); digitalWrite(greenPin, HIGH); delay(10000); // Wait for 10 seconds // Optional: Add a yellow light before switching back to red digitalWrite(redPin, LOW); digitalWrite(yellowPin, HIGH); digitalWrite(greenPin, LOW); delay(3000); // Wait for 3 seconds }