Arduino Project : Blinking LED's | LED's Pattern

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Material Required:-
- Arduino UNO
- Bread Board
- Jumper Wires
- LED'S
- Resistor 220 ohm
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CODE
//initializing a variables for digital pin 2 to 7
int led1 = 2;
int led2 = 3;
int led3 = 4;
int led4 = 5;
int led5 = 6;
int led6 = 7;
void setup() {
// put your setup code here, to run once:
//initialize digital pin as output
pinMode(led1,OUTPUT);
pinMode (led2,OUTPUT);
pinMode (led3,OUTPUT);
pinMode (led4,OUTPUT);
pinMode(led5,OUTPUT);
pinMode(led6,OUTPUT);
}

void loop() {
// put your main code here, to run repeatedly:
digitalWrite(led1,HIGH);// led on
delay(1000);//wait for 1 second
digitalWrite(led2,HIGH);
delay(1000);
digitalWrite(led3,HIGH);
delay(1000);
digitalWrite(led4,HIGH);
delay(1000);
digitalWrite(led5,HIGH);
delay(1000);
digitalWrite(led6,HIGH);
delay(1000);
digitalWrite(led1,LOW);// led OFF
delay(1000);//wait for 1 second
digitalWrite(led2,LOW);
delay(1000);
digitalWrite(led3,LOW);
delay(1000);
digitalWrite(led4,LOW);
delay(1000);
digitalWrite(led5,LOW);
delay(1000);
digitalWrite(led6,LOW);
delay(1000);
}
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