Controlling LED Using Arduino Mega 2560

Introduction

In this article I have explained about controlling LED using Arduino Mega 2560. Also, controlling the brightness of LED using Arduino Mega 2560 will be described.

Parts

• Arduino Mega 2560
• Potentiometer
• BreadBoard
• LED

Connection

Step 1: Connection from Potentiometer to Arduino Mega 2560:

• The first pin of the potentiometer can be connected to the Gnd of the Arduino Mega 2560.
• The second pin of the potentiometer can be connected to the Analog pin A0 of the Arduino Mega 2560.
• The third pin of the potentiometer can be connected to the 5V of the Arduino Mega 2560.

Step 2: Connection From Potentiometer To Arduino Mega 2560:

• Postive pin = 09
• Negative pin = Gnd

Programming

const byte POTENTIOMETER = 0;
const byte CONTROL = 9;
int reading;
int value;
void setup()
{
    pinMode(CONTROL, OUTPUT);
}
void loop()
{
    reading = analogRead(POTENTIOMETER);
    value = map(reading, 0, 1024, 0, 255);
    analogWrite(CONTROL, value);
}

Explanation

• When the potentiometer is adjusted the LED can be low to high
• In the potentiometer we can see the brightness of the LED.

Output

                                          Figure 1: Output

 

Read more articles on Arduino:

• Getting Familiar With Arduino IDE
• Intel Edison Or Arduino Control Using Windows Azure Mobile Services