Arduino knight rider light

1/*
2
3* ***************************  
4  written : Binuka Dasunpriya
5  date : 24th January 2021
6  updated : 25th January 2021
7  updated By : Binuka  Dasunpriya
8  Email : binukadasunpriya@gmail.com
9  GitHub : https://github.com/BinukaDasunpriya
10
11*  ***************************  
12
13
14
15 
16
17* ***************************
18we  need : 12 jumper wires
19        : 10 leds
20        : A breadboard 
21        :  Arduino Uno/mega/nano board
22
23Led pins : leds + = arduino 2-11
24         :  leds - = arduino Gnd
25
26
27                          
28* ***************************        
29*/
30
31
32
33
34
35void setup() {
36  
37
38  for(int pin  = 2; pin < 12; pin ++){
39  pinMode(pin,OUTPUT);
40}
41}
42
43void loop() {
44  int t = 20;
45
46 for(int i = 2; i < 12; i++){
47 digitalWrite(i,HIGH);
48 delay(t);
49  digitalWrite(i+1,HIGH);
50 delay(t);
51 digitalWrite(i+2,HIGH);
52 delay(t);
53  digitalWrite(i,LOW);
54 delay(t);
55 digitalWrite(i+1,LOW);
56 
57 }
58
59  for(int i = 12; i > 1; i--){
60 digitalWrite(i,HIGH);
61 delay(t);
62 digitalWrite(i-1,HIGH);
63  delay(t);
64 digitalWrite(i-2,HIGH);
65 delay(t);
66 digitalWrite(i,LOW);
67  delay(t);
68 digitalWrite(i-1,LOW);
69 
70 }
71
72}
73