Arduino LED lesson(Knight Rider)

Ignite few LEDs by using "for loops"

Required components:-

   1). Arduino uno(you can use any type)

2). 8×LEDs

3). 8× 220 ohms resistors

4). Few jumper wires

5). Breadboard

Step 01:- 

Connect your LEDs and resistors to the breadboard as in the picture given above.

Step 02:-

Connect the eight resistors which connected to the LEDs to GND pin in arduino board.

Step 03:-

Connect the (+) pins of LEDs to 6,7,8,9,10,11,12,13 pins in arduino board.

Step 04:-

Now uploas the code given below.

Code:

void setup(){

for(int i=6; i<=13; i++){

pinMode(i, OUTPUT);

}

}

void loop(){

for(int j=6; j<=13; j++){

digitalWrite(j, HIGH);

delay(100);

digitalWrite(j, LOW);

}

for(int j=12; j>6; j--){

digitalWrite(j, HIGH);

delay(100);

digitalWrite(j, LOW);

}

}