Blinking LEDs In Sequence (Pin-By-Pin)

Introduction

Arduino is often used with input and output peripherals. Common output components used with Arduino in mini-projects are LED and Buzzer. Similarly, a potentiometer is a commonly used input device for analog input to Arduino. In this article, we will dive into understanding these components and making exciting mini projects using these.

Using LED As Output

Circuit Diagram:

Software Setup:

	int LED1 = 3; //Declare 1st LED
	int LED8 = 10; //Declare last LED
	int lastLed = 0;
	void setup() {
	Serial.begin(9600);
	for(int i= LED1; i <= LED8; i++) //Declare all LED in Output pin mode
	pinMode(i, OUTPUT);
	}
	void loop() {
	if (Serial.available() > 0)
	lastLed = Serial.parseInt();
	Serial.println(lastLed);
	for(int i = LED1; i < (LED1 + lastLed); i++)//Turn on Input number of LEDs
	{
	digitalWrite(i, HIGH);
	delay(2);
	}
	delay(1000);
	for(int i = LED1; i < (LED1 + lastLed); i+=1)//Turn on Input number of LEDs
	{
	digitalWrite(i, LOW);

view raw Controlling LEDs hosted with ❤ by GitHub

Output Demo: