Importance and usefulness of LED Street Lights LED street lights have become increasingly popular due to their energy efficiency and longevity compared to traditional street lighting options. LED lights consume less energy, have a longer lifespan, and provide better illumination. This makes them a cost-effective and environmentally friendly choice for street lighting. In this article, we will explore a project using Arduino to control LED street lights and showcase the benefits of this technology.

Project: Controlling LED Street Lights with Arduino In this project, we will create a system to control LED street lights using an Arduino board. The objective is to demonstrate how Arduino can be used to automate street lighting, allowing for energy-saving features such as dimming or turning off lights when not needed.

The functionality of the project includes:

1. Turning on/off LED street lights using Arduino.
2. Implementing dimming functionality to adjust the brightness of the lights.
3. Using a light sensor to automatically turn on/off the lights based on ambient light levels.

List of components:

1. Arduino Uno - 1x
2. LED street lights - 3x
3. Light sensor module - 1x
4. Breadboard - 1x
5. Jumper wires - As required

You can purchase these components from the following links:

• Arduino Uno: [link]
• LED street lights: [link]
• Light sensor module: [link]
• Breadboard: [link]
• Jumper wires: [link]

Examples: Example 1: Turning on/off LED street lights

const int streetLightPin = 9;

void setup() {
  pinMode(streetLightPin, OUTPUT);
}

void loop() {
  digitalWrite(streetLightPin, HIGH);  // Turns on the street lights
  delay(5000);  // Wait for 5 seconds
  digitalWrite(streetLightPin, LOW);  // Turns off the street lights
  delay(5000);  // Wait for 5 seconds
}

Example 2: Dimming LED street lights

const int streetLightPin = 9;

void setup() {
  pinMode(streetLightPin, OUTPUT);
}

void loop() {
  analogWrite(streetLightPin, 128);  // Sets the brightness to half (0-255 range)
  delay(5000);  // Wait for 5 seconds
  analogWrite(streetLightPin, 255);  // Sets the brightness to full
  delay(5000);  // Wait for 5 seconds
}

Example 3: Automatic control using a light sensor

const int streetLightPin = 9;
const int lightSensorPin = A0;

void setup() {
  pinMode(streetLightPin, OUTPUT);
  pinMode(lightSensorPin, INPUT);
}

void loop() {
  int lightLevel = analogRead(lightSensorPin);  // Read the light sensor value
  if (lightLevel < 500) {
    digitalWrite(streetLightPin, HIGH);  // Turns on the street lights
  } else {
    digitalWrite(streetLightPin, LOW);  // Turns off the street lights
  }
  delay(1000);  // Wait for 1 second
}