LED Pattern

Back to: Robotics & Artificial Intelligence (Class IX)

Component Required:

• LED
• Resistor 220 ohm
• Jumper Wire (Male to Male/Male to Female)
• Bread Board (Optional)
• Arduino

The objective of this project is to program an Arduino microcontroller to control multiple LEDs in a specific pattern sequence. This project aims to teach students how to:

1. Understand how to connect multiple LEDs to an Arduino and control them via digital output pins.
2. Write a program to create different LED patterns using Arduino, such as blinking sequences, running lights, or alternating flashes.
3. Utilize loops (for, while) and conditional statements (if-else) to manage complex LED patterns.
4. Develop programming skills for controlling multiple outputs simultaneously.
5. Understand timing and synchronization using the delay() function and explore how to manage multiple delays.

Programming Step:

Initialization of pin;

• int L1=3;
• int L2=4;
• int L3=5;
• int L4=6;

pinMode();

• pinMode(L1,OUTPUT);
• pinMode(L2,OUTPUT);
• pinMode(L3,OUTPUT);
• pinMode(L4,OUTPUT);

Logic

• digitalWrite(L1,HIGH);
• digitalWrite(L2,LOW);
• digitalWrite(L3,HIGH);
• digitalWrite(L4,LOW);
• delay(1000);
• digitalWrite(L1,LOW);
• digitalWrite(L2,HIGH);
• digitalWrite(L3,LOW);
• digitalWrite(L4,HIGH);
• delay(1000);

Programming

int L1 = 3;

int L2 = 4;

int L3 = 5;

int L4 = 6;

void setup()

{

  pinMode(L1, OUTPUT);

  pinMode(L2, OUTPUT);

  pinMode(L3, OUTPUT);

  pinMode(L4, OUTPUT);

}

void loop()

{

  digitalWrite(L1, HIGH);

  digitalWrite(L2, LOW);

  digitalWrite(L3, HIGH);

  digitalWrite(L4, LOW);

  delay(1000);

  digitalWrite(L1, LOW);

  digitalWrite(L2, HIGH);

  digitalWrite(L3, LOW);

  digitalWrite(L4, HIGH);

  delay(1000);

}