Blinking LED In Arduino Mega 2560

Introduction:

In this article I will explain how to blink an LED in Arduino Mega 2560.

Parts Of List:

• Arduino Mega 2560
• LED-3
• Bread Board
• USB Cable.

LED:

• Light Emitting Diode (LED) can emit the light.
• The LED glows when the voltage is applied.

         Figure 1: LED

Connection: Take three LEDs and fix in the Bread Board.

First LED connection:

• Positive pin = 13;
• Negative pin = Gnd.

Second LED connection:

• Positive pin = 12;
• Negative pin = Gnd.

Third LED connection:

• Positive pin = 11;
• Negative pin = Gnd.

Programming:

int led1 = 13;
int led2 = 12;
int led3 = 11;
void setup()
{
    pinMode(13, OUTPUT);
    pinMode(12, OUTPUT);
    pinMode(11, OUTPUT);
}
void loop()
{
    digitalWrite(13, HIGH); // turn the LED on (HIGH is the voltage level)
    delay(1000); // wait for a second
    digitalWrite(13, LOW); // turn the LED off by making the voltage LOW
    delay(1000); // wait for a second
    digitalWrite(12, HIGH); // turn the LED on (HIGH is the voltage level)
    delay(1000); // wait for a second
    digitalWrite(12, LOW); // turn the LED off by making the voltage LOW
    delay(1000); // wait for a second
    digitalWrite(11, HIGH); // turn the LED on (HIGH is the voltage level)
    delay(1000); // wait for a second
    digitalWrite(11, LOW); // turn the LED off by making the voltage LOW
    delay(1000); // wait for a second
}

Explanation:

• When the first LED is ON then automatically take the delay time.
• And the second LED is ON and finally the third LED is also ON.
• It can be repeatedly done.

Output:

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