LED pattern changer using push buttons

Today, we will learn how to use led's and four pushbuttons to control its pattern.

Sep 27, 2020

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lights

Components and supplies

Resistor 1k ohm

Arduino UNO

Pushbutton switch 12mm

Touch sensor

Jumper wires (generic)

Apps and platforms

Arduino Web Editor

Arduino IDE

Project description

Code

My code.

c_cpp

1const int led1 = 2;
2const int led2 = 3;
3const int led3 = 4;
4const  int led4 = 5;
5const int led5 = 6;
6const int led6 = 7;
7const int led7 =  8;
8const int led8 = 9;
9const int BUTTON1Pin= 12 ;
10const int BUTTON2Pin=  11 ;
11const int BUTTON3Pin= 10 ;
12const int BUTTON4Pin= 13 ;                                                                                      
13
14int  BUTTON1State = 0;
15int BUTTON2State = 0;
16int BUTTON3State = 0;
17int BUTTON4State  = 0;
18void setup() {
19 
20  pinMode(led1,OUTPUT);
21  pinMode(led2,OUTPUT);
22  pinMode(led3,OUTPUT);
23  pinMode(led4,OUTPUT);
24  pinMode(led5,OUTPUT);
25  pinMode(led6,OUTPUT);
26  pinMode(led7,OUTPUT);
27  pinMode(led8,OUTPUT);
28  pinMode(BUTTON1Pin,INPUT);
29  pinMode(BUTTON2Pin,INPUT);
30  pinMode(BUTTON3Pin,INPUT);
31  pinMode(BUTTON4Pin,INPUT);
32}
33
34void loop() {
35  BUTTON1State = digitalRead(BUTTON1Pin);
36  BUTTON2State = digitalRead(BUTTON2Pin);
37  BUTTON3State = digitalRead(BUTTON3Pin);
38  BUTTON4State = digitalRead(BUTTON4Pin);
39  if (BUTTON1State == HIGH) {
40    //  turn LED on:
41    digitalWrite(led1 , HIGH);
42  digitalWrite(led2 , HIGH);
43  digitalWrite(led3 , HIGH);
44  digitalWrite(led4 , HIGH);
45  digitalWrite(led5  , HIGH);
46  digitalWrite(led6 , HIGH);
47  digitalWrite(led7 , HIGH);
48  digitalWrite(led8  , HIGH);
49  delay(900);
50  digitalWrite(led1 , LOW);
51  digitalWrite(led2  , LOW);
52  digitalWrite(led3 , LOW);
53  digitalWrite(led4 , LOW);
54  digitalWrite(led5  , LOW);
55  digitalWrite(led6 , LOW);
56  digitalWrite(led7 , LOW);
57  digitalWrite(led8  , LOW);
58  delay(100);
59  digitalWrite(led1 , HIGH);
60  digitalWrite(led2  , LOW);
61  digitalWrite(led3 , HIGH);
62  digitalWrite(led4 , LOW);
63  digitalWrite(led5  , HIGH);
64  digitalWrite(led6 , LOW);
65  digitalWrite(led7 , HIGH);
66  digitalWrite(led8  , LOW);
67  delay(900);
68  digitalWrite(led1 , LOW);
69  digitalWrite(led2 ,  LOW);
70  digitalWrite(led3 , LOW);
71  digitalWrite(led4 , LOW);
72  digitalWrite(led5  , LOW);
73  digitalWrite(led6 , LOW);
74  digitalWrite(led7 , LOW);
75  digitalWrite(led8  , LOW);
76  delay(100);
77  digitalWrite(led1 , LOW);
78  digitalWrite(led2 ,  HIGH);
79  digitalWrite(led3 , LOW);
80  digitalWrite(led4 , HIGH);
81  digitalWrite(led5  , LOW);
82  digitalWrite(led6 , HIGH);
83  digitalWrite(led7 , LOW);
84  digitalWrite(led8  , HIGH);
85  delay(900);
86  digitalWrite(led1 , LOW);
87  digitalWrite(led2  , LOW);
88  digitalWrite(led3 , LOW);
89  digitalWrite(led4 , LOW);
90  digitalWrite(led5  , LOW);
91  digitalWrite(led6 , LOW);
92  digitalWrite(led7 , LOW);
93  digitalWrite(led8  , LOW);
94  delay(100);
95  digitalWrite(led1 , HIGH);
96  digitalWrite(led2  , HIGH);
97  digitalWrite(led3 , HIGH);
98  digitalWrite(led4 , HIGH);
99  digitalWrite(led5  , HIGH);
100  digitalWrite(led6 , HIGH);
101  digitalWrite(led7 , HIGH);
102  digitalWrite(led8  , HIGH);
103  delay(900);
104  digitalWrite(led1 , LOW);
105  digitalWrite(led2  , LOW);
106  digitalWrite(led3 , LOW);
107  digitalWrite(led4 , LOW);
108  digitalWrite(led5  , LOW);
109  digitalWrite(led6 , LOW);
110  digitalWrite(led7 , LOW);
111  digitalWrite(led8  , LOW);
112  delay(100);
113  digitalWrite(led1 , HIGH);
114  digitalWrite(led2  , LOW);
115  digitalWrite(led3 , HIGH);
116  digitalWrite(led4 , LOW);
117  digitalWrite(led5  , HIGH);
118  digitalWrite(led6 , LOW);
119  digitalWrite(led7 , HIGH);
120  digitalWrite(led8  , LOW);
121  delay(900);
122  digitalWrite(led1 , LOW);
123  digitalWrite(led2 ,  LOW);
124  digitalWrite(led3 , LOW);
125  digitalWrite(led4 , LOW);
126  digitalWrite(led5  , LOW);
127  digitalWrite(led6 , LOW);
128  digitalWrite(led7 , LOW);
129  digitalWrite(led8  , LOW);
130  delay(100);
131  digitalWrite(led1 , LOW);
132  digitalWrite(led2 ,  HIGH);
133  digitalWrite(led3 , LOW);
134  digitalWrite(led4 , HIGH);
135  digitalWrite(led5  , LOW);
136  digitalWrite(led6 , HIGH);
137  digitalWrite(led7 , LOW);
138  digitalWrite(led8  , HIGH);
139  delay(900);
140  digitalWrite(led1 , LOW);
141  digitalWrite(led2  , LOW);
142  digitalWrite(led3 , LOW);
143  digitalWrite(led4 , LOW);
144  digitalWrite(led5  , LOW);
145  digitalWrite(led6 , LOW);
146  digitalWrite(led7 , LOW);
147  digitalWrite(led8  , LOW);
148  delay(100);
149  } else {
150    digitalWrite(led1 , LOW);
151  digitalWrite(led2  , LOW);
152  digitalWrite(led3 , LOW);
153  digitalWrite(led4 , LOW);
154  digitalWrite(led5  , LOW);
155  digitalWrite(led6 , LOW);
156  digitalWrite(led7 , LOW);
157  digitalWrite(led8  , LOW);
158  delay(100);
159  }
160  if (BUTTON2State == HIGH) {
161    digitalWrite(led1  , HIGH);
162  delay(100);
163  digitalWrite(led1 , LOW);
164  digitalWrite(led2  , HIGH);
165  delay(100);
166  digitalWrite(led2 , LOW);
167  digitalWrite(led3  , HIGH);
168  delay(100);
169  digitalWrite(led3 , LOW);
170  digitalWrite(led4  , HIGH);
171  delay(100);
172  digitalWrite(led4 , LOW);
173  digitalWrite(led5  , HIGH);
174  delay(100);
175  digitalWrite(led5 , LOW);
176  digitalWrite(led6  , HIGH);
177  delay(100);
178  digitalWrite(led6 , LOW);
179  digitalWrite(led7  , HIGH);
180  delay(100);
181  digitalWrite(led7 , LOW);
182  digitalWrite(led8  , HIGH);
183  delay(100);
184  digitalWrite(led8 , LOW);
185  delay(100);//this  is the break 
186  digitalWrite(led8 , HIGH);
187  delay(100);
188  digitalWrite(led8  , LOW);
189  digitalWrite(led7 , HIGH);
190  delay(100);
191  digitalWrite(led7  , LOW);
192  digitalWrite(led6 , HIGH);
193  delay(100);
194  digitalWrite(led6  , LOW);
195  digitalWrite(led5 , HIGH);
196  delay(100);
197  digitalWrite(led5  , LOW);
198  digitalWrite(led4 , HIGH);
199  delay(100);
200  digitalWrite(led4  , LOW);
201  digitalWrite(led3 , HIGH);
202  delay(100);
203  digitalWrite(led3  , LOW);
204  digitalWrite(led2 , HIGH);
205  delay(100);
206  digitalWrite(led2  , LOW);
207  digitalWrite(led1 , HIGH);
208  delay(100);
209  digitalWrite(led1  , LOW);
210  delay(100);//this is the break 
211  digitalWrite(led1 , HIGH);
212  delay(100);
213  digitalWrite(led1 , LOW);
214  digitalWrite(led2 , HIGH);
215  delay(100);
216  digitalWrite(led2 , LOW);
217  digitalWrite(led3 , HIGH);
218  delay(100);
219  digitalWrite(led3 , LOW);
220  digitalWrite(led4 , HIGH);
221  delay(100);
222  digitalWrite(led4 , LOW);
223  digitalWrite(led5 , HIGH);
224  delay(100);
225  digitalWrite(led5 , LOW);
226  digitalWrite(led6 , HIGH);
227  delay(100);
228  digitalWrite(led6 , LOW);
229  digitalWrite(led7 , HIGH);
230  delay(100);
231  digitalWrite(led7 , LOW);
232  digitalWrite(led8 , HIGH);
233  delay(100);
234  digitalWrite(led8 , LOW);
235  delay(100);//this is the break  
236  digitalWrite(led8 , HIGH);
237  delay(100);
238  digitalWrite(led8 , LOW);
239  digitalWrite(led7 , HIGH);
240  delay(100);
241  digitalWrite(led7 , LOW);
242  digitalWrite(led6 , HIGH);
243  delay(100);
244  digitalWrite(led6 , LOW);
245  digitalWrite(led5 , HIGH);
246  delay(100);
247  digitalWrite(led5 , LOW);
248  digitalWrite(led4 , HIGH);
249  delay(100);
250  digitalWrite(led4 , LOW);
251  digitalWrite(led3 , HIGH);
252  delay(100);
253  digitalWrite(led3 , LOW);
254  digitalWrite(led2 , HIGH);
255  delay(100);
256  digitalWrite(led2 , LOW);
257  digitalWrite(led1 , HIGH);
258  delay(100);
259  digitalWrite(led1 , LOW);
260  delay(100);//this is the break 
261  }else{
262    digitalWrite(led1 , LOW);
263  digitalWrite(led2 , LOW);
264  digitalWrite(led3 , LOW);
265  digitalWrite(led4  , LOW);
266  digitalWrite(led5 , LOW);
267  digitalWrite(led6 , LOW);
268  digitalWrite(led7  , LOW);
269  digitalWrite(led8 , LOW);
270  delay(100);
271    
272  }
273  if (BUTTON3State  == HIGH) {
274    digitalWrite(led1 , HIGH);
275  delay(100);
276  digitalWrite(led2  , HIGH);
277  delay(100);
278  digitalWrite(led3 , HIGH);
279  delay(100);
280  digitalWrite(led4  , HIGH);
281  delay(100);
282  digitalWrite(led5 , HIGH);
283  delay(100);
284  digitalWrite(led6  , HIGH);
285  delay(100);
286  digitalWrite(led7 , HIGH);
287  delay(100);
288  digitalWrite(led8  , HIGH);
289  delay(100);
290  digitalWrite(led1 , LOW);
291  delay(100);
292  digitalWrite(led2  , LOW);
293  delay(100);
294  digitalWrite(led3 , LOW);
295  delay(100);
296  digitalWrite(led4  , LOW);
297  delay(100);
298  digitalWrite(led5 , LOW);
299  delay(100);
300  digitalWrite(led6  , LOW);
301  delay(100);
302  digitalWrite(led7 , LOW);
303  delay(100);
304  digitalWrite(led8  ,LOW);
305  delay(100);//this is the break
306  digitalWrite(led8 , HIGH);
307  delay(100);
308  digitalWrite(led7 , HIGH);
309  delay(100);
310  digitalWrite(led6 , HIGH);
311  delay(100);
312  digitalWrite(led5 , HIGH);
313  delay(100);
314  digitalWrite(led4  , HIGH);
315  delay(100);
316  digitalWrite(led3 , HIGH);
317  delay(100);
318  digitalWrite(led2  , HIGH);
319  delay(100);
320  digitalWrite(led1 , HIGH);
321  delay(100);
322  digitalWrite(led8  , LOW);
323  delay(100);
324  digitalWrite(led7 , LOW);
325  delay(100);
326  digitalWrite(led6  , LOW);
327  delay(100);
328  digitalWrite(led5 , LOW);
329  delay(100);
330  digitalWrite(led4  , LOW);
331  delay(100);
332  digitalWrite(led3 , LOW);
333  delay(100);
334  digitalWrite(led2  , LOW);
335  delay(100);
336  digitalWrite(led1 , LOW);
337  delay(100);//this is  the break
338  digitalWrite(led1 , HIGH);
339  delay(100);
340  digitalWrite(led2  , HIGH);
341  delay(100);
342  digitalWrite(led3 , HIGH);
343  delay(100);
344  digitalWrite(led4  , HIGH);
345  delay(100);
346  digitalWrite(led5 , HIGH);
347  delay(100);
348  digitalWrite(led6  , HIGH);
349  delay(100);
350  digitalWrite(led7 , HIGH);
351  delay(100);
352  digitalWrite(led8  , HIGH);
353  delay(100);
354  digitalWrite(led8 , LOW);
355  delay(100);
356  digitalWrite(led7  , LOW);
357  delay(100);
358  digitalWrite(led6 , LOW);
359  delay(100);
360  digitalWrite(led5  , LOW);
361  delay(100);
362  digitalWrite(led4 , LOW);
363  delay(100);
364  digitalWrite(led3  , LOW);
365  delay(100);
366  digitalWrite(led2 , LOW);
367  delay(100);
368  digitalWrite(led1  ,LOW);
369  delay(100);//this is the break
370  digitalWrite(led8 , HIGH);
371  delay(100);
372  digitalWrite(led7 , HIGH);
373  delay(100);
374  digitalWrite(led6 , HIGH);
375  delay(100);
376  digitalWrite(led5 , HIGH);
377  delay(100);
378  digitalWrite(led4  , HIGH);
379  delay(100);
380  digitalWrite(led3 , HIGH);
381  delay(100);
382  digitalWrite(led2  , HIGH);
383  delay(100);
384  digitalWrite(led1 , HIGH);
385  delay(100);
386  digitalWrite(led1  , LOW);
387  delay(100);
388  digitalWrite(led2 , LOW);
389  delay(100);
390  digitalWrite(led3  , LOW);
391  delay(100);
392  digitalWrite(led4 , LOW);
393  delay(100);
394  digitalWrite(led5  , LOW);
395  delay(100);
396  digitalWrite(led6 , LOW);
397  delay(100);
398  digitalWrite(led7  , LOW);
399  delay(100);
400  digitalWrite(led8 , LOW);
401  delay(100);
402  }  else{
403    digitalWrite(led1 , LOW);
404  digitalWrite(led2 , LOW);
405  digitalWrite(led3  , LOW);
406  digitalWrite(led4 , LOW);
407  digitalWrite(led5 , LOW);
408  digitalWrite(led6  , LOW);
409  digitalWrite(led7 , LOW);
410  digitalWrite(led8 , LOW);
411  delay(100);
412    
413  }
414  if (BUTTON4State == HIGH) {
415    digitalWrite(led1 , HIGH);
416  digitalWrite(led8 , HIGH);
417  delay(100);
418  digitalWrite(led2 , HIGH);
419  digitalWrite(led7 , HIGH);
420  delay(100);
421  digitalWrite(led3 , HIGH);
422  digitalWrite(led6 , HIGH);
423  delay(100);
424  digitalWrite(led4 , HIGH);
425  digitalWrite(led5 , HIGH);
426  delay(100);
427  digitalWrite(led4 , LOW);
428  digitalWrite(led5 , LOW);
429  delay(100);
430  digitalWrite(led3 , LOW);
431  digitalWrite(led6 , LOW);
432  delay(100);
433  digitalWrite(led2 , LOW);
434  digitalWrite(led7 , LOW);
435  delay(100);
436  digitalWrite(led1 , LOW);
437  digitalWrite(led8 , LOW);
438  delay(100);//this is the break
439  digitalWrite(led1  , HIGH);
440  digitalWrite(led8 , HIGH);
441  delay(100);
442  digitalWrite(led2  , HIGH);
443  digitalWrite(led7 , HIGH);
444  delay(100);
445  digitalWrite(led3  , HIGH);
446  digitalWrite(led6 , HIGH);
447  delay(100);
448  digitalWrite(led4  , HIGH);
449  digitalWrite(led5 , HIGH);
450  delay(100);
451  digitalWrite(led1  , LOW);
452  digitalWrite(led8 , LOW);
453  delay(100);
454  digitalWrite(led2 ,  LOW);
455  digitalWrite(led7 , LOW);
456  delay(100);
457  digitalWrite(led3 , LOW);
458  digitalWrite(led6 , LOW);
459  delay(100);
460  digitalWrite(led4 , LOW);
461  digitalWrite(led5 , LOW);
462  delay(100);//this is the brek
463  digitalWrite(led4  , HIGH);
464  digitalWrite(led5 , HIGH);
465  delay(100);
466  digitalWrite(led3  , HIGH);
467  digitalWrite(led6 , HIGH);
468  delay(100);
469  digitalWrite(led2  , HIGH);
470  digitalWrite(led7 , HIGH);
471  delay(100);
472  digitalWrite(led1  , HIGH);
473  digitalWrite(led8 , HIGH);
474  delay(100);
475  digitalWrite(led4  , LOW);
476  digitalWrite(led5 , LOW);
477  delay(100);
478  digitalWrite(led3 ,  LOW);
479  digitalWrite(led6 , LOW);
480  delay(100);
481  digitalWrite(led2 , LOW);
482  digitalWrite(led7 , LOW);
483  delay(100);
484  digitalWrite(led1 , LOW);
485  digitalWrite(led8 , LOW);
486  delay(100);//this is the break
487   digitalWrite(led4  , HIGH);
488  digitalWrite(led5 , HIGH);
489  delay(100);
490  digitalWrite(led3  , HIGH);
491  digitalWrite(led6 , HIGH);
492  delay(100);
493  digitalWrite(led2  , HIGH);
494  digitalWrite(led7 , HIGH);
495  delay(100);
496  digitalWrite(led1  , HIGH);
497  digitalWrite(led8 , HIGH);
498  delay(100);
499  digitalWrite(led1  , LOW);
500  digitalWrite(led8 , LOW);
501  delay(100);
502  digitalWrite(led2 ,  LOW);
503  digitalWrite(led7 , LOW);
504  delay(100);
505  digitalWrite(led3 , LOW);
506  digitalWrite(led6 , LOW);
507  delay(100);
508  digitalWrite(led4 , LOW);
509  digitalWrite(led5 , LOW);
510  delay(200);
511  digitalWrite(led1 , HIGH);
512  digitalWrite(led8 , HIGH);
513  delay(100);
514  digitalWrite(led2 , HIGH);
515  digitalWrite(led7 , HIGH);
516  delay(100);
517  digitalWrite(led3 , HIGH);
518  digitalWrite(led6 , HIGH);
519  delay(100);
520  digitalWrite(led4 , HIGH);
521  digitalWrite(led5 , HIGH);
522  delay(100);
523  digitalWrite(led4 , LOW);
524  digitalWrite(led5 , LOW);
525  delay(100);
526  digitalWrite(led3 , LOW);
527  digitalWrite(led6 , LOW);
528  delay(100);
529  digitalWrite(led2 , LOW);
530  digitalWrite(led7 , LOW);
531  delay(100);
532  digitalWrite(led1 , LOW);
533  digitalWrite(led8 , LOW);
534  delay(100);//this is the break
535  digitalWrite(led1  , HIGH);
536  digitalWrite(led8 , HIGH);
537  delay(100);
538  digitalWrite(led2  , HIGH);
539  digitalWrite(led7 , HIGH);
540  delay(100);
541  digitalWrite(led3  , HIGH);
542  digitalWrite(led6 , HIGH);
543  delay(100);
544  digitalWrite(led4  , HIGH);
545  digitalWrite(led5 , HIGH);
546  delay(100);
547  digitalWrite(led1  , LOW);
548  digitalWrite(led8 , LOW);
549  delay(100);
550  digitalWrite(led2 ,  LOW);
551  digitalWrite(led7 , LOW);
552  delay(100);
553  digitalWrite(led3 , LOW);
554  digitalWrite(led6 , LOW);
555  delay(100);
556  digitalWrite(led4 , LOW);
557  digitalWrite(led5 , LOW);
558  delay(100);//this is the brek
559  digitalWrite(led4  , HIGH);
560  digitalWrite(led5 , HIGH);
561  delay(100);
562  digitalWrite(led3  , HIGH);
563  digitalWrite(led6 , HIGH);
564  delay(100);
565  digitalWrite(led2  , HIGH);
566  digitalWrite(led7 , HIGH);
567  delay(100);
568  digitalWrite(led1  , HIGH);
569  digitalWrite(led8 , HIGH);
570  delay(100);
571  digitalWrite(led4  , LOW);
572  digitalWrite(led5 , LOW);
573  delay(100);
574  digitalWrite(led3 ,  LOW);
575  digitalWrite(led6 , LOW);
576  delay(100);
577  digitalWrite(led2 , LOW);
578  digitalWrite(led7 , LOW);
579  delay(100);
580  digitalWrite(led1 , LOW);
581  digitalWrite(led8 , LOW);
582  delay(100);//this is the break
583   digitalWrite(led4  , HIGH);
584  digitalWrite(led5 , HIGH);
585  delay(100);
586  digitalWrite(led3  , HIGH);
587  digitalWrite(led6 , HIGH);
588  delay(100);
589  digitalWrite(led2  , HIGH);
590  digitalWrite(led7 , HIGH);
591  delay(100);
592  digitalWrite(led1  , HIGH);
593  digitalWrite(led8 , HIGH);
594  delay(100);
595  digitalWrite(led1  , LOW);
596  digitalWrite(led8 , LOW);
597  delay(100);
598  digitalWrite(led2 ,  LOW);
599  digitalWrite(led7 , LOW);
600  delay(100);
601  digitalWrite(led3 , LOW);
602  digitalWrite(led6 , LOW);
603  delay(100);
604  digitalWrite(led4 , LOW);
605  digitalWrite(led5 , LOW);
606  delay(200);
607  } else {
608    digitalWrite(led1  , LOW);
609  digitalWrite(led2 , LOW);
610  digitalWrite(led3 , LOW);
611  digitalWrite(led4  , LOW);
612  digitalWrite(led5 , LOW);
613  digitalWrite(led6 , LOW);
614  digitalWrite(led7  , LOW);
615  digitalWrite(led8 , LOW);
616  delay(100);
617    
618  
619  
620  
621  
622  
623
624 
625  
626  
627  
628
629}
630  
631}
632

const int led1 = 2;
const int led2 = 3;
const int led3 = 4;
const  int led4 = 5;
const int led5 = 6;
const int led6 = 7;
const int led7 =  8;
const int led8 = 9;
const int BUTTON1Pin= 12 ;
const int BUTTON2Pin=  11 ;
const int BUTTON3Pin= 10 ;
const int BUTTON4Pin= 13 ;                                                                                      

int  BUTTON1State = 0;
int BUTTON2State = 0;
int BUTTON3State = 0;
int BUTTON4State  = 0;
void setup() {
 
  pinMode(led1,OUTPUT);
  pinMode(led2,OUTPUT);
  pinMode(led3,OUTPUT);
  pinMode(led4,OUTPUT);
  pinMode(led5,OUTPUT);
  pinMode(led6,OUTPUT);
  pinMode(led7,OUTPUT);
  pinMode(led8,OUTPUT);
  pinMode(BUTTON1Pin,INPUT);
  pinMode(BUTTON2Pin,INPUT);
  pinMode(BUTTON3Pin,INPUT);
  pinMode(BUTTON4Pin,INPUT);
}

void loop() {
  BUTTON1State = digitalRead(BUTTON1Pin);
  BUTTON2State = digitalRead(BUTTON2Pin);
  BUTTON3State = digitalRead(BUTTON3Pin);
  BUTTON4State = digitalRead(BUTTON4Pin);
  if (BUTTON1State == HIGH) {
    //  turn LED on:
    digitalWrite(led1 , HIGH);
  digitalWrite(led2 , HIGH);
  digitalWrite(led3 , HIGH);
  digitalWrite(led4 , HIGH);
  digitalWrite(led5  , HIGH);
  digitalWrite(led6 , HIGH);
  digitalWrite(led7 , HIGH);
  digitalWrite(led8  , HIGH);
  delay(900);
  digitalWrite(led1 , LOW);
  digitalWrite(led2  , LOW);
  digitalWrite(led3 , LOW);
  digitalWrite(led4 , LOW);
  digitalWrite(led5  , LOW);
  digitalWrite(led6 , LOW);
  digitalWrite(led7 , LOW);
  digitalWrite(led8  , LOW);
  delay(100);
  digitalWrite(led1 , HIGH);
  digitalWrite(led2  , LOW);
  digitalWrite(led3 , HIGH);
  digitalWrite(led4 , LOW);
  digitalWrite(led5  , HIGH);
  digitalWrite(led6 , LOW);
  digitalWrite(led7 , HIGH);
  digitalWrite(led8  , LOW);
  delay(900);
  digitalWrite(led1 , LOW);
  digitalWrite(led2 ,  LOW);
  digitalWrite(led3 , LOW);
  digitalWrite(led4 , LOW);
  digitalWrite(led5  , LOW);
  digitalWrite(led6 , LOW);
  digitalWrite(led7 , LOW);
  digitalWrite(led8  , LOW);
  delay(100);
  digitalWrite(led1 , LOW);
  digitalWrite(led2 ,  HIGH);
  digitalWrite(led3 , LOW);
  digitalWrite(led4 , HIGH);
  digitalWrite(led5  , LOW);
  digitalWrite(led6 , HIGH);
  digitalWrite(led7 , LOW);
  digitalWrite(led8  , HIGH);
  delay(900);
  digitalWrite(led1 , LOW);
  digitalWrite(led2  , LOW);
  digitalWrite(led3 , LOW);
  digitalWrite(led4 , LOW);
  digitalWrite(led5  , LOW);
  digitalWrite(led6 , LOW);
  digitalWrite(led7 , LOW);
  digitalWrite(led8  , LOW);
  delay(100);
  digitalWrite(led1 , HIGH);
  digitalWrite(led2  , HIGH);
  digitalWrite(led3 , HIGH);
  digitalWrite(led4 , HIGH);
  digitalWrite(led5  , HIGH);
  digitalWrite(led6 , HIGH);
  digitalWrite(led7 , HIGH);
  digitalWrite(led8  , HIGH);
  delay(900);
  digitalWrite(led1 , LOW);
  digitalWrite(led2  , LOW);
  digitalWrite(led3 , LOW);
  digitalWrite(led4 , LOW);
  digitalWrite(led5  , LOW);
  digitalWrite(led6 , LOW);
  digitalWrite(led7 , LOW);
  digitalWrite(led8  , LOW);
  delay(100);
  digitalWrite(led1 , HIGH);
  digitalWrite(led2  , LOW);
  digitalWrite(led3 , HIGH);
  digitalWrite(led4 , LOW);
  digitalWrite(led5  , HIGH);
  digitalWrite(led6 , LOW);
  digitalWrite(led7 , HIGH);
  digitalWrite(led8  , LOW);
  delay(900);
  digitalWrite(led1 , LOW);
  digitalWrite(led2 ,  LOW);
  digitalWrite(led3 , LOW);
  digitalWrite(led4 , LOW);
  digitalWrite(led5  , LOW);
  digitalWrite(led6 , LOW);
  digitalWrite(led7 , LOW);
  digitalWrite(led8  , LOW);
  delay(100);
  digitalWrite(led1 , LOW);
  digitalWrite(led2 ,  HIGH);
  digitalWrite(led3 , LOW);
  digitalWrite(led4 , HIGH);
  digitalWrite(led5  , LOW);
  digitalWrite(led6 , HIGH);
  digitalWrite(led7 , LOW);
  digitalWrite(led8  , HIGH);
  delay(900);
  digitalWrite(led1 , LOW);
  digitalWrite(led2  , LOW);
  digitalWrite(led3 , LOW);
  digitalWrite(led4 , LOW);
  digitalWrite(led5  , LOW);
  digitalWrite(led6 , LOW);
  digitalWrite(led7 , LOW);
  digitalWrite(led8  , LOW);
  delay(100);
  } else {
    digitalWrite(led1 , LOW);
  digitalWrite(led2  , LOW);
  digitalWrite(led3 , LOW);
  digitalWrite(led4 , LOW);
  digitalWrite(led5  , LOW);
  digitalWrite(led6 , LOW);
  digitalWrite(led7 , LOW);
  digitalWrite(led8  , LOW);
  delay(100);
  }
  if (BUTTON2State == HIGH) {
    digitalWrite(led1  , HIGH);
  delay(100);
  digitalWrite(led1 , LOW);
  digitalWrite(led2  , HIGH);
  delay(100);
  digitalWrite(led2 , LOW);
  digitalWrite(led3  , HIGH);
  delay(100);
  digitalWrite(led3 , LOW);
  digitalWrite(led4  , HIGH);
  delay(100);
  digitalWrite(led4 , LOW);
  digitalWrite(led5  , HIGH);
  delay(100);
  digitalWrite(led5 , LOW);
  digitalWrite(led6  , HIGH);
  delay(100);
  digitalWrite(led6 , LOW);
  digitalWrite(led7  , HIGH);
  delay(100);
  digitalWrite(led7 , LOW);
  digitalWrite(led8  , HIGH);
  delay(100);
  digitalWrite(led8 , LOW);
  delay(100);//this  is the break 
  digitalWrite(led8 , HIGH);
  delay(100);
  digitalWrite(led8  , LOW);
  digitalWrite(led7 , HIGH);
  delay(100);
  digitalWrite(led7  , LOW);
  digitalWrite(led6 , HIGH);
  delay(100);
  digitalWrite(led6  , LOW);
  digitalWrite(led5 , HIGH);
  delay(100);
  digitalWrite(led5  , LOW);
  digitalWrite(led4 , HIGH);
  delay(100);
  digitalWrite(led4  , LOW);
  digitalWrite(led3 , HIGH);
  delay(100);
  digitalWrite(led3  , LOW);
  digitalWrite(led2 , HIGH);
  delay(100);
  digitalWrite(led2  , LOW);
  digitalWrite(led1 , HIGH);
  delay(100);
  digitalWrite(led1  , LOW);
  delay(100);//this is the break 
  digitalWrite(led1 , HIGH);
  delay(100);
  digitalWrite(led1 , LOW);
  digitalWrite(led2 , HIGH);
  delay(100);
  digitalWrite(led2 , LOW);
  digitalWrite(led3 , HIGH);
  delay(100);
  digitalWrite(led3 , LOW);
  digitalWrite(led4 , HIGH);
  delay(100);
  digitalWrite(led4 , LOW);
  digitalWrite(led5 , HIGH);
  delay(100);
  digitalWrite(led5 , LOW);
  digitalWrite(led6 , HIGH);
  delay(100);
  digitalWrite(led6 , LOW);
  digitalWrite(led7 , HIGH);
  delay(100);
  digitalWrite(led7 , LOW);
  digitalWrite(led8 , HIGH);
  delay(100);
  digitalWrite(led8 , LOW);
  delay(100);//this is the break  
  digitalWrite(led8 , HIGH);
  delay(100);
  digitalWrite(led8 , LOW);
  digitalWrite(led7 , HIGH);
  delay(100);
  digitalWrite(led7 , LOW);
  digitalWrite(led6 , HIGH);
  delay(100);
  digitalWrite(led6 , LOW);
  digitalWrite(led5 , HIGH);
  delay(100);
  digitalWrite(led5 , LOW);
  digitalWrite(led4 , HIGH);
  delay(100);
  digitalWrite(led4 , LOW);
  digitalWrite(led3 , HIGH);
  delay(100);
  digitalWrite(led3 , LOW);
  digitalWrite(led2 , HIGH);
  delay(100);
  digitalWrite(led2 , LOW);
  digitalWrite(led1 , HIGH);
  delay(100);
  digitalWrite(led1 , LOW);
  delay(100);//this is the break 
  }else{
    digitalWrite(led1 , LOW);
  digitalWrite(led2 , LOW);
  digitalWrite(led3 , LOW);
  digitalWrite(led4  , LOW);
  digitalWrite(led5 , LOW);
  digitalWrite(led6 , LOW);
  digitalWrite(led7  , LOW);
  digitalWrite(led8 , LOW);
  delay(100);
    
  }
  if (BUTTON3State  == HIGH) {
    digitalWrite(led1 , HIGH);
  delay(100);
  digitalWrite(led2  , HIGH);
  delay(100);
  digitalWrite(led3 , HIGH);
  delay(100);
  digitalWrite(led4  , HIGH);
  delay(100);
  digitalWrite(led5 , HIGH);
  delay(100);
  digitalWrite(led6  , HIGH);
  delay(100);
  digitalWrite(led7 , HIGH);
  delay(100);
  digitalWrite(led8  , HIGH);
  delay(100);
  digitalWrite(led1 , LOW);
  delay(100);
  digitalWrite(led2  , LOW);
  delay(100);
  digitalWrite(led3 , LOW);
  delay(100);
  digitalWrite(led4  , LOW);
  delay(100);
  digitalWrite(led5 , LOW);
  delay(100);
  digitalWrite(led6  , LOW);
  delay(100);
  digitalWrite(led7 , LOW);
  delay(100);
  digitalWrite(led8  ,LOW);
  delay(100);//this is the break
  digitalWrite(led8 , HIGH);
  delay(100);
  digitalWrite(led7 , HIGH);
  delay(100);
  digitalWrite(led6 , HIGH);
  delay(100);
  digitalWrite(led5 , HIGH);
  delay(100);
  digitalWrite(led4  , HIGH);
  delay(100);
  digitalWrite(led3 , HIGH);
  delay(100);
  digitalWrite(led2  , HIGH);
  delay(100);
  digitalWrite(led1 , HIGH);
  delay(100);
  digitalWrite(led8  , LOW);
  delay(100);
  digitalWrite(led7 , LOW);
  delay(100);
  digitalWrite(led6  , LOW);
  delay(100);
  digitalWrite(led5 , LOW);
  delay(100);
  digitalWrite(led4  , LOW);
  delay(100);
  digitalWrite(led3 , LOW);
  delay(100);
  digitalWrite(led2  , LOW);
  delay(100);
  digitalWrite(led1 , LOW);
  delay(100);//this is  the break
  digitalWrite(led1 , HIGH);
  delay(100);
  digitalWrite(led2  , HIGH);
  delay(100);
  digitalWrite(led3 , HIGH);
  delay(100);
  digitalWrite(led4  , HIGH);
  delay(100);
  digitalWrite(led5 , HIGH);
  delay(100);
  digitalWrite(led6  , HIGH);
  delay(100);
  digitalWrite(led7 , HIGH);
  delay(100);
  digitalWrite(led8  , HIGH);
  delay(100);
  digitalWrite(led8 , LOW);
  delay(100);
  digitalWrite(led7  , LOW);
  delay(100);
  digitalWrite(led6 , LOW);
  delay(100);
  digitalWrite(led5  , LOW);
  delay(100);
  digitalWrite(led4 , LOW);
  delay(100);
  digitalWrite(led3  , LOW);
  delay(100);
  digitalWrite(led2 , LOW);
  delay(100);
  digitalWrite(led1  ,LOW);
  delay(100);//this is the break
  digitalWrite(led8 , HIGH);
  delay(100);
  digitalWrite(led7 , HIGH);
  delay(100);
  digitalWrite(led6 , HIGH);
  delay(100);
  digitalWrite(led5 , HIGH);
  delay(100);
  digitalWrite(led4  , HIGH);
  delay(100);
  digitalWrite(led3 , HIGH);
  delay(100);
  digitalWrite(led2  , HIGH);
  delay(100);
  digitalWrite(led1 , HIGH);
  delay(100);
  digitalWrite(led1  , LOW);
  delay(100);
  digitalWrite(led2 , LOW);
  delay(100);
  digitalWrite(led3  , LOW);
  delay(100);
  digitalWrite(led4 , LOW);
  delay(100);
  digitalWrite(led5  , LOW);
  delay(100);
  digitalWrite(led6 , LOW);
  delay(100);
  digitalWrite(led7  , LOW);
  delay(100);
  digitalWrite(led8 , LOW);
  delay(100);
  }  else{
    digitalWrite(led1 , LOW);
  digitalWrite(led2 , LOW);
  digitalWrite(led3  , LOW);
  digitalWrite(led4 , LOW);
  digitalWrite(led5 , LOW);
  digitalWrite(led6  , LOW);
  digitalWrite(led7 , LOW);
  digitalWrite(led8 , LOW);
  delay(100);
    
  }
  if (BUTTON4State == HIGH) {
    digitalWrite(led1 , HIGH);
  digitalWrite(led8 , HIGH);
  delay(100);
  digitalWrite(led2 , HIGH);
  digitalWrite(led7 , HIGH);
  delay(100);
  digitalWrite(led3 , HIGH);
  digitalWrite(led6 , HIGH);
  delay(100);
  digitalWrite(led4 , HIGH);
  digitalWrite(led5 , HIGH);
  delay(100);
  digitalWrite(led4 , LOW);
  digitalWrite(led5 , LOW);
  delay(100);
  digitalWrite(led3 , LOW);
  digitalWrite(led6 , LOW);
  delay(100);
  digitalWrite(led2 , LOW);
  digitalWrite(led7 , LOW);
  delay(100);
  digitalWrite(led1 , LOW);
  digitalWrite(led8 , LOW);
  delay(100);//this is the break
  digitalWrite(led1  , HIGH);
  digitalWrite(led8 , HIGH);
  delay(100);
  digitalWrite(led2  , HIGH);
  digitalWrite(led7 , HIGH);
  delay(100);
  digitalWrite(led3  , HIGH);
  digitalWrite(led6 , HIGH);
  delay(100);
  digitalWrite(led4  , HIGH);
  digitalWrite(led5 , HIGH);
  delay(100);
  digitalWrite(led1  , LOW);
  digitalWrite(led8 , LOW);
  delay(100);
  digitalWrite(led2 ,  LOW);
  digitalWrite(led7 , LOW);
  delay(100);
  digitalWrite(led3 , LOW);
  digitalWrite(led6 , LOW);
  delay(100);
  digitalWrite(led4 , LOW);
  digitalWrite(led5 , LOW);
  delay(100);//this is the brek
  digitalWrite(led4  , HIGH);
  digitalWrite(led5 , HIGH);
  delay(100);
  digitalWrite(led3  , HIGH);
  digitalWrite(led6 , HIGH);
  delay(100);
  digitalWrite(led2  , HIGH);
  digitalWrite(led7 , HIGH);
  delay(100);
  digitalWrite(led1  , HIGH);
  digitalWrite(led8 , HIGH);
  delay(100);
  digitalWrite(led4  , LOW);
  digitalWrite(led5 , LOW);
  delay(100);
  digitalWrite(led3 ,  LOW);
  digitalWrite(led6 , LOW);
  delay(100);
  digitalWrite(led2 , LOW);
  digitalWrite(led7 , LOW);
  delay(100);
  digitalWrite(led1 , LOW);
  digitalWrite(led8 , LOW);
  delay(100);//this is the break
   digitalWrite(led4  , HIGH);
  digitalWrite(led5 , HIGH);
  delay(100);
  digitalWrite(led3  , HIGH);
  digitalWrite(led6 , HIGH);
  delay(100);
  digitalWrite(led2  , HIGH);
  digitalWrite(led7 , HIGH);
  delay(100);
  digitalWrite(led1  , HIGH);
  digitalWrite(led8 , HIGH);
  delay(100);
  digitalWrite(led1  , LOW);
  digitalWrite(led8 , LOW);
  delay(100);
  digitalWrite(led2 ,  LOW);
  digitalWrite(led7 , LOW);
  delay(100);
  digitalWrite(led3 , LOW);
  digitalWrite(led6 , LOW);
  delay(100);
  digitalWrite(led4 , LOW);
  digitalWrite(led5 , LOW);
  delay(200);
  digitalWrite(led1 , HIGH);
  digitalWrite(led8 , HIGH);
  delay(100);
  digitalWrite(led2 , HIGH);
  digitalWrite(led7 , HIGH);
  delay(100);
  digitalWrite(led3 , HIGH);
  digitalWrite(led6 , HIGH);
  delay(100);
  digitalWrite(led4 , HIGH);
  digitalWrite(led5 , HIGH);
  delay(100);
  digitalWrite(led4 , LOW);
  digitalWrite(led5 , LOW);
  delay(100);
  digitalWrite(led3 , LOW);
  digitalWrite(led6 , LOW);
  delay(100);
  digitalWrite(led2 , LOW);
  digitalWrite(led7 , LOW);
  delay(100);
  digitalWrite(led1 , LOW);
  digitalWrite(led8 , LOW);
  delay(100);//this is the break
  digitalWrite(led1  , HIGH);
  digitalWrite(led8 , HIGH);
  delay(100);
  digitalWrite(led2  , HIGH);
  digitalWrite(led7 , HIGH);
  delay(100);
  digitalWrite(led3  , HIGH);
  digitalWrite(led6 , HIGH);
  delay(100);
  digitalWrite(led4  , HIGH);
  digitalWrite(led5 , HIGH);
  delay(100);
  digitalWrite(led1  , LOW);
  digitalWrite(led8 , LOW);
  delay(100);
  digitalWrite(led2 ,  LOW);
  digitalWrite(led7 , LOW);
  delay(100);
  digitalWrite(led3 , LOW);
  digitalWrite(led6 , LOW);
  delay(100);
  digitalWrite(led4 , LOW);
  digitalWrite(led5 , LOW);
  delay(100);//this is the brek
  digitalWrite(led4  , HIGH);
  digitalWrite(led5 , HIGH);
  delay(100);
  digitalWrite(led3  , HIGH);
  digitalWrite(led6 , HIGH);
  delay(100);
  digitalWrite(led2  , HIGH);
  digitalWrite(led7 , HIGH);
  delay(100);
  digitalWrite(led1  , HIGH);
  digitalWrite(led8 , HIGH);
  delay(100);
  digitalWrite(led4  , LOW);
  digitalWrite(led5 , LOW);
  delay(100);
  digitalWrite(led3 ,  LOW);
  digitalWrite(led6 , LOW);
  delay(100);
  digitalWrite(led2 , LOW);
  digitalWrite(led7 , LOW);
  delay(100);
  digitalWrite(led1 , LOW);
  digitalWrite(led8 , LOW);
  delay(100);//this is the break
   digitalWrite(led4  , HIGH);
  digitalWrite(led5 , HIGH);
  delay(100);
  digitalWrite(led3  , HIGH);
  digitalWrite(led6 , HIGH);
  delay(100);
  digitalWrite(led2  , HIGH);
  digitalWrite(led7 , HIGH);
  delay(100);
  digitalWrite(led1  , HIGH);
  digitalWrite(led8 , HIGH);
  delay(100);
  digitalWrite(led1  , LOW);
  digitalWrite(led8 , LOW);
  delay(100);
  digitalWrite(led2 ,  LOW);
  digitalWrite(led7 , LOW);
  delay(100);
  digitalWrite(led3 , LOW);
  digitalWrite(led6 , LOW);
  delay(100);
  digitalWrite(led4 , LOW);
  digitalWrite(led5 , LOW);
  delay(200);
  } else {
    digitalWrite(led1  , LOW);
  digitalWrite(led2 , LOW);
  digitalWrite(led3 , LOW);
  digitalWrite(led4  , LOW);
  digitalWrite(led5 , LOW);
  digitalWrite(led6 , LOW);
  digitalWrite(led7  , LOW);
  digitalWrite(led8 , LOW);
  delay(100);
    
  
  
  
  
  

 
  
  
  

}
  
}

My code.

c_cpp

1const int led1 = 2;
2const int led2 = 3;
3const int led3 = 4;
4const
5  int led4 = 5;
6const int led5 = 6;
7const int led6 = 7;
8const int led7 =
9  8;
10const int led8 = 9;
11const int BUTTON1Pin= 12 ;
12const int BUTTON2Pin=
13  11 ;
14const int BUTTON3Pin= 10 ;
15const int BUTTON4Pin= 13 ;                                                                                      
16
17int
18  BUTTON1State = 0;
19int BUTTON2State = 0;
20int BUTTON3State = 0;
21int BUTTON4State
22  = 0;
23void setup() {
24 
25  pinMode(led1,OUTPUT);
26  pinMode(led2,OUTPUT);
27
28  pinMode(led3,OUTPUT);
29  pinMode(led4,OUTPUT);
30  pinMode(led5,OUTPUT);
31
32  pinMode(led6,OUTPUT);
33  pinMode(led7,OUTPUT);
34  pinMode(led8,OUTPUT);
35
36  pinMode(BUTTON1Pin,INPUT);
37  pinMode(BUTTON2Pin,INPUT);
38  pinMode(BUTTON3Pin,INPUT);
39
40  pinMode(BUTTON4Pin,INPUT);
41}
42
43void loop() {
44  BUTTON1State = digitalRead(BUTTON1Pin);
45
46  BUTTON2State = digitalRead(BUTTON2Pin);
47  BUTTON3State = digitalRead(BUTTON3Pin);
48
49  BUTTON4State = digitalRead(BUTTON4Pin);
50  if (BUTTON1State == HIGH) {
51    //
52  turn LED on:
53    digitalWrite(led1 , HIGH);
54  digitalWrite(led2 , HIGH);
55
56  digitalWrite(led3 , HIGH);
57  digitalWrite(led4 , HIGH);
58  digitalWrite(led5
59  , HIGH);
60  digitalWrite(led6 , HIGH);
61  digitalWrite(led7 , HIGH);
62  digitalWrite(led8
63  , HIGH);
64  delay(900);
65  digitalWrite(led1 , LOW);
66  digitalWrite(led2
67  , LOW);
68  digitalWrite(led3 , LOW);
69  digitalWrite(led4 , LOW);
70  digitalWrite(led5
71  , LOW);
72  digitalWrite(led6 , LOW);
73  digitalWrite(led7 , LOW);
74  digitalWrite(led8
75  , LOW);
76  delay(100);
77  digitalWrite(led1 , HIGH);
78  digitalWrite(led2
79  , LOW);
80  digitalWrite(led3 , HIGH);
81  digitalWrite(led4 , LOW);
82  digitalWrite(led5
83  , HIGH);
84  digitalWrite(led6 , LOW);
85  digitalWrite(led7 , HIGH);
86  digitalWrite(led8
87  , LOW);
88  delay(900);
89  digitalWrite(led1 , LOW);
90  digitalWrite(led2 ,
91  LOW);
92  digitalWrite(led3 , LOW);
93  digitalWrite(led4 , LOW);
94  digitalWrite(led5
95  , LOW);
96  digitalWrite(led6 , LOW);
97  digitalWrite(led7 , LOW);
98  digitalWrite(led8
99  , LOW);
100  delay(100);
101  digitalWrite(led1 , LOW);
102  digitalWrite(led2 ,
103  HIGH);
104  digitalWrite(led3 , LOW);
105  digitalWrite(led4 , HIGH);
106  digitalWrite(led5
107  , LOW);
108  digitalWrite(led6 , HIGH);
109  digitalWrite(led7 , LOW);
110  digitalWrite(led8
111  , HIGH);
112  delay(900);
113  digitalWrite(led1 , LOW);
114  digitalWrite(led2
115  , LOW);
116  digitalWrite(led3 , LOW);
117  digitalWrite(led4 , LOW);
118  digitalWrite(led5
119  , LOW);
120  digitalWrite(led6 , LOW);
121  digitalWrite(led7 , LOW);
122  digitalWrite(led8
123  , LOW);
124  delay(100);
125  digitalWrite(led1 , HIGH);
126  digitalWrite(led2
127  , HIGH);
128  digitalWrite(led3 , HIGH);
129  digitalWrite(led4 , HIGH);
130  digitalWrite(led5
131  , HIGH);
132  digitalWrite(led6 , HIGH);
133  digitalWrite(led7 , HIGH);
134  digitalWrite(led8
135  , HIGH);
136  delay(900);
137  digitalWrite(led1 , LOW);
138  digitalWrite(led2
139  , LOW);
140  digitalWrite(led3 , LOW);
141  digitalWrite(led4 , LOW);
142  digitalWrite(led5
143  , LOW);
144  digitalWrite(led6 , LOW);
145  digitalWrite(led7 , LOW);
146  digitalWrite(led8
147  , LOW);
148  delay(100);
149  digitalWrite(led1 , HIGH);
150  digitalWrite(led2
151  , LOW);
152  digitalWrite(led3 , HIGH);
153  digitalWrite(led4 , LOW);
154  digitalWrite(led5
155  , HIGH);
156  digitalWrite(led6 , LOW);
157  digitalWrite(led7 , HIGH);
158  digitalWrite(led8
159  , LOW);
160  delay(900);
161  digitalWrite(led1 , LOW);
162  digitalWrite(led2 ,
163  LOW);
164  digitalWrite(led3 , LOW);
165  digitalWrite(led4 , LOW);
166  digitalWrite(led5
167  , LOW);
168  digitalWrite(led6 , LOW);
169  digitalWrite(led7 , LOW);
170  digitalWrite(led8
171  , LOW);
172  delay(100);
173  digitalWrite(led1 , LOW);
174  digitalWrite(led2 ,
175  HIGH);
176  digitalWrite(led3 , LOW);
177  digitalWrite(led4 , HIGH);
178  digitalWrite(led5
179  , LOW);
180  digitalWrite(led6 , HIGH);
181  digitalWrite(led7 , LOW);
182  digitalWrite(led8
183  , HIGH);
184  delay(900);
185  digitalWrite(led1 , LOW);
186  digitalWrite(led2
187  , LOW);
188  digitalWrite(led3 , LOW);
189  digitalWrite(led4 , LOW);
190  digitalWrite(led5
191  , LOW);
192  digitalWrite(led6 , LOW);
193  digitalWrite(led7 , LOW);
194  digitalWrite(led8
195  , LOW);
196  delay(100);
197  } else {
198    digitalWrite(led1 , LOW);
199  digitalWrite(led2
200  , LOW);
201  digitalWrite(led3 , LOW);
202  digitalWrite(led4 , LOW);
203  digitalWrite(led5
204  , LOW);
205  digitalWrite(led6 , LOW);
206  digitalWrite(led7 , LOW);
207  digitalWrite(led8
208  , LOW);
209  delay(100);
210  }
211  if (BUTTON2State == HIGH) {
212    digitalWrite(led1
213  , HIGH);
214  delay(100);
215  digitalWrite(led1 , LOW);
216  digitalWrite(led2
217  , HIGH);
218  delay(100);
219  digitalWrite(led2 , LOW);
220  digitalWrite(led3
221  , HIGH);
222  delay(100);
223  digitalWrite(led3 , LOW);
224  digitalWrite(led4
225  , HIGH);
226  delay(100);
227  digitalWrite(led4 , LOW);
228  digitalWrite(led5
229  , HIGH);
230  delay(100);
231  digitalWrite(led5 , LOW);
232  digitalWrite(led6
233  , HIGH);
234  delay(100);
235  digitalWrite(led6 , LOW);
236  digitalWrite(led7
237  , HIGH);
238  delay(100);
239  digitalWrite(led7 , LOW);
240  digitalWrite(led8
241  , HIGH);
242  delay(100);
243  digitalWrite(led8 , LOW);
244  delay(100);//this
245  is the break 
246  digitalWrite(led8 , HIGH);
247  delay(100);
248  digitalWrite(led8
249  , LOW);
250  digitalWrite(led7 , HIGH);
251  delay(100);
252  digitalWrite(led7
253  , LOW);
254  digitalWrite(led6 , HIGH);
255  delay(100);
256  digitalWrite(led6
257  , LOW);
258  digitalWrite(led5 , HIGH);
259  delay(100);
260  digitalWrite(led5
261  , LOW);
262  digitalWrite(led4 , HIGH);
263  delay(100);
264  digitalWrite(led4
265  , LOW);
266  digitalWrite(led3 , HIGH);
267  delay(100);
268  digitalWrite(led3
269  , LOW);
270  digitalWrite(led2 , HIGH);
271  delay(100);
272  digitalWrite(led2
273  , LOW);
274  digitalWrite(led1 , HIGH);
275  delay(100);
276  digitalWrite(led1
277  , LOW);
278  delay(100);//this is the break 
279  digitalWrite(led1 , HIGH);
280
281  delay(100);
282  digitalWrite(led1 , LOW);
283  digitalWrite(led2 , HIGH);
284
285  delay(100);
286  digitalWrite(led2 , LOW);
287  digitalWrite(led3 , HIGH);
288
289  delay(100);
290  digitalWrite(led3 , LOW);
291  digitalWrite(led4 , HIGH);
292
293  delay(100);
294  digitalWrite(led4 , LOW);
295  digitalWrite(led5 , HIGH);
296
297  delay(100);
298  digitalWrite(led5 , LOW);
299  digitalWrite(led6 , HIGH);
300
301  delay(100);
302  digitalWrite(led6 , LOW);
303  digitalWrite(led7 , HIGH);
304
305  delay(100);
306  digitalWrite(led7 , LOW);
307  digitalWrite(led8 , HIGH);
308
309  delay(100);
310  digitalWrite(led8 , LOW);
311  delay(100);//this is the break
312  
313  digitalWrite(led8 , HIGH);
314  delay(100);
315  digitalWrite(led8 , LOW);
316
317  digitalWrite(led7 , HIGH);
318  delay(100);
319  digitalWrite(led7 , LOW);
320
321  digitalWrite(led6 , HIGH);
322  delay(100);
323  digitalWrite(led6 , LOW);
324
325  digitalWrite(led5 , HIGH);
326  delay(100);
327  digitalWrite(led5 , LOW);
328
329  digitalWrite(led4 , HIGH);
330  delay(100);
331  digitalWrite(led4 , LOW);
332
333  digitalWrite(led3 , HIGH);
334  delay(100);
335  digitalWrite(led3 , LOW);
336
337  digitalWrite(led2 , HIGH);
338  delay(100);
339  digitalWrite(led2 , LOW);
340
341  digitalWrite(led1 , HIGH);
342  delay(100);
343  digitalWrite(led1 , LOW);
344
345  delay(100);//this is the break 
346  }else{
347    digitalWrite(led1 , LOW);
348
349  digitalWrite(led2 , LOW);
350  digitalWrite(led3 , LOW);
351  digitalWrite(led4
352  , LOW);
353  digitalWrite(led5 , LOW);
354  digitalWrite(led6 , LOW);
355  digitalWrite(led7
356  , LOW);
357  digitalWrite(led8 , LOW);
358  delay(100);
359    
360  }
361  if (BUTTON3State
362  == HIGH) {
363    digitalWrite(led1 , HIGH);
364  delay(100);
365  digitalWrite(led2
366  , HIGH);
367  delay(100);
368  digitalWrite(led3 , HIGH);
369  delay(100);
370  digitalWrite(led4
371  , HIGH);
372  delay(100);
373  digitalWrite(led5 , HIGH);
374  delay(100);
375  digitalWrite(led6
376  , HIGH);
377  delay(100);
378  digitalWrite(led7 , HIGH);
379  delay(100);
380  digitalWrite(led8
381  , HIGH);
382  delay(100);
383  digitalWrite(led1 , LOW);
384  delay(100);
385  digitalWrite(led2
386  , LOW);
387  delay(100);
388  digitalWrite(led3 , LOW);
389  delay(100);
390  digitalWrite(led4
391  , LOW);
392  delay(100);
393  digitalWrite(led5 , LOW);
394  delay(100);
395  digitalWrite(led6
396  , LOW);
397  delay(100);
398  digitalWrite(led7 , LOW);
399  delay(100);
400  digitalWrite(led8
401  ,LOW);
402  delay(100);//this is the break
403  digitalWrite(led8 , HIGH);
404  delay(100);
405
406  digitalWrite(led7 , HIGH);
407  delay(100);
408  digitalWrite(led6 , HIGH);
409
410  delay(100);
411  digitalWrite(led5 , HIGH);
412  delay(100);
413  digitalWrite(led4
414  , HIGH);
415  delay(100);
416  digitalWrite(led3 , HIGH);
417  delay(100);
418  digitalWrite(led2
419  , HIGH);
420  delay(100);
421  digitalWrite(led1 , HIGH);
422  delay(100);
423  digitalWrite(led8
424  , LOW);
425  delay(100);
426  digitalWrite(led7 , LOW);
427  delay(100);
428  digitalWrite(led6
429  , LOW);
430  delay(100);
431  digitalWrite(led5 , LOW);
432  delay(100);
433  digitalWrite(led4
434  , LOW);
435  delay(100);
436  digitalWrite(led3 , LOW);
437  delay(100);
438  digitalWrite(led2
439  , LOW);
440  delay(100);
441  digitalWrite(led1 , LOW);
442  delay(100);//this is
443  the break
444  digitalWrite(led1 , HIGH);
445  delay(100);
446  digitalWrite(led2
447  , HIGH);
448  delay(100);
449  digitalWrite(led3 , HIGH);
450  delay(100);
451  digitalWrite(led4
452  , HIGH);
453  delay(100);
454  digitalWrite(led5 , HIGH);
455  delay(100);
456  digitalWrite(led6
457  , HIGH);
458  delay(100);
459  digitalWrite(led7 , HIGH);
460  delay(100);
461  digitalWrite(led8
462  , HIGH);
463  delay(100);
464  digitalWrite(led8 , LOW);
465  delay(100);
466  digitalWrite(led7
467  , LOW);
468  delay(100);
469  digitalWrite(led6 , LOW);
470  delay(100);
471  digitalWrite(led5
472  , LOW);
473  delay(100);
474  digitalWrite(led4 , LOW);
475  delay(100);
476  digitalWrite(led3
477  , LOW);
478  delay(100);
479  digitalWrite(led2 , LOW);
480  delay(100);
481  digitalWrite(led1
482  ,LOW);
483  delay(100);//this is the break
484  digitalWrite(led8 , HIGH);
485  delay(100);
486
487  digitalWrite(led7 , HIGH);
488  delay(100);
489  digitalWrite(led6 , HIGH);
490
491  delay(100);
492  digitalWrite(led5 , HIGH);
493  delay(100);
494  digitalWrite(led4
495  , HIGH);
496  delay(100);
497  digitalWrite(led3 , HIGH);
498  delay(100);
499  digitalWrite(led2
500  , HIGH);
501  delay(100);
502  digitalWrite(led1 , HIGH);
503  delay(100);
504  digitalWrite(led1
505  , LOW);
506  delay(100);
507  digitalWrite(led2 , LOW);
508  delay(100);
509  digitalWrite(led3
510  , LOW);
511  delay(100);
512  digitalWrite(led4 , LOW);
513  delay(100);
514  digitalWrite(led5
515  , LOW);
516  delay(100);
517  digitalWrite(led6 , LOW);
518  delay(100);
519  digitalWrite(led7
520  , LOW);
521  delay(100);
522  digitalWrite(led8 , LOW);
523  delay(100);
524  }
525  else{
526    digitalWrite(led1 , LOW);
527  digitalWrite(led2 , LOW);
528  digitalWrite(led3
529  , LOW);
530  digitalWrite(led4 , LOW);
531  digitalWrite(led5 , LOW);
532  digitalWrite(led6
533  , LOW);
534  digitalWrite(led7 , LOW);
535  digitalWrite(led8 , LOW);
536  delay(100);
537
538    
539  }
540  if (BUTTON4State == HIGH) {
541    digitalWrite(led1 , HIGH);
542
543  digitalWrite(led8 , HIGH);
544  delay(100);
545  digitalWrite(led2 , HIGH);
546
547  digitalWrite(led7 , HIGH);
548  delay(100);
549  digitalWrite(led3 , HIGH);
550
551  digitalWrite(led6 , HIGH);
552  delay(100);
553  digitalWrite(led4 , HIGH);
554
555  digitalWrite(led5 , HIGH);
556  delay(100);
557  digitalWrite(led4 , LOW);
558
559  digitalWrite(led5 , LOW);
560  delay(100);
561  digitalWrite(led3 , LOW);
562
563  digitalWrite(led6 , LOW);
564  delay(100);
565  digitalWrite(led2 , LOW);
566
567  digitalWrite(led7 , LOW);
568  delay(100);
569  digitalWrite(led1 , LOW);
570
571  digitalWrite(led8 , LOW);
572  delay(100);//this is the break
573  digitalWrite(led1
574  , HIGH);
575  digitalWrite(led8 , HIGH);
576  delay(100);
577  digitalWrite(led2
578  , HIGH);
579  digitalWrite(led7 , HIGH);
580  delay(100);
581  digitalWrite(led3
582  , HIGH);
583  digitalWrite(led6 , HIGH);
584  delay(100);
585  digitalWrite(led4
586  , HIGH);
587  digitalWrite(led5 , HIGH);
588  delay(100);
589  digitalWrite(led1
590  , LOW);
591  digitalWrite(led8 , LOW);
592  delay(100);
593  digitalWrite(led2 ,
594  LOW);
595  digitalWrite(led7 , LOW);
596  delay(100);
597  digitalWrite(led3 , LOW);
598
599  digitalWrite(led6 , LOW);
600  delay(100);
601  digitalWrite(led4 , LOW);
602
603  digitalWrite(led5 , LOW);
604  delay(100);//this is the brek
605  digitalWrite(led4
606  , HIGH);
607  digitalWrite(led5 , HIGH);
608  delay(100);
609  digitalWrite(led3
610  , HIGH);
611  digitalWrite(led6 , HIGH);
612  delay(100);
613  digitalWrite(led2
614  , HIGH);
615  digitalWrite(led7 , HIGH);
616  delay(100);
617  digitalWrite(led1
618  , HIGH);
619  digitalWrite(led8 , HIGH);
620  delay(100);
621  digitalWrite(led4
622  , LOW);
623  digitalWrite(led5 , LOW);
624  delay(100);
625  digitalWrite(led3 ,
626  LOW);
627  digitalWrite(led6 , LOW);
628  delay(100);
629  digitalWrite(led2 , LOW);
630
631  digitalWrite(led7 , LOW);
632  delay(100);
633  digitalWrite(led1 , LOW);
634
635  digitalWrite(led8 , LOW);
636  delay(100);//this is the break
637   digitalWrite(led4
638  , HIGH);
639  digitalWrite(led5 , HIGH);
640  delay(100);
641  digitalWrite(led3
642  , HIGH);
643  digitalWrite(led6 , HIGH);
644  delay(100);
645  digitalWrite(led2
646  , HIGH);
647  digitalWrite(led7 , HIGH);
648  delay(100);
649  digitalWrite(led1
650  , HIGH);
651  digitalWrite(led8 , HIGH);
652  delay(100);
653  digitalWrite(led1
654  , LOW);
655  digitalWrite(led8 , LOW);
656  delay(100);
657  digitalWrite(led2 ,
658  LOW);
659  digitalWrite(led7 , LOW);
660  delay(100);
661  digitalWrite(led3 , LOW);
662
663  digitalWrite(led6 , LOW);
664  delay(100);
665  digitalWrite(led4 , LOW);
666
667  digitalWrite(led5 , LOW);
668  delay(200);
669  digitalWrite(led1 , HIGH);
670
671  digitalWrite(led8 , HIGH);
672  delay(100);
673  digitalWrite(led2 , HIGH);
674
675  digitalWrite(led7 , HIGH);
676  delay(100);
677  digitalWrite(led3 , HIGH);
678
679  digitalWrite(led6 , HIGH);
680  delay(100);
681  digitalWrite(led4 , HIGH);
682
683  digitalWrite(led5 , HIGH);
684  delay(100);
685  digitalWrite(led4 , LOW);
686
687  digitalWrite(led5 , LOW);
688  delay(100);
689  digitalWrite(led3 , LOW);
690
691  digitalWrite(led6 , LOW);
692  delay(100);
693  digitalWrite(led2 , LOW);
694
695  digitalWrite(led7 , LOW);
696  delay(100);
697  digitalWrite(led1 , LOW);
698
699  digitalWrite(led8 , LOW);
700  delay(100);//this is the break
701  digitalWrite(led1
702  , HIGH);
703  digitalWrite(led8 , HIGH);
704  delay(100);
705  digitalWrite(led2
706  , HIGH);
707  digitalWrite(led7 , HIGH);
708  delay(100);
709  digitalWrite(led3
710  , HIGH);
711  digitalWrite(led6 , HIGH);
712  delay(100);
713  digitalWrite(led4
714  , HIGH);
715  digitalWrite(led5 , HIGH);
716  delay(100);
717  digitalWrite(led1
718  , LOW);
719  digitalWrite(led8 , LOW);
720  delay(100);
721  digitalWrite(led2 ,
722  LOW);
723  digitalWrite(led7 , LOW);
724  delay(100);
725  digitalWrite(led3 , LOW);
726
727  digitalWrite(led6 , LOW);
728  delay(100);
729  digitalWrite(led4 , LOW);
730
731  digitalWrite(led5 , LOW);
732  delay(100);//this is the brek
733  digitalWrite(led4
734  , HIGH);
735  digitalWrite(led5 , HIGH);
736  delay(100);
737  digitalWrite(led3
738  , HIGH);
739  digitalWrite(led6 , HIGH);
740  delay(100);
741  digitalWrite(led2
742  , HIGH);
743  digitalWrite(led7 , HIGH);
744  delay(100);
745  digitalWrite(led1
746  , HIGH);
747  digitalWrite(led8 , HIGH);
748  delay(100);
749  digitalWrite(led4
750  , LOW);
751  digitalWrite(led5 , LOW);
752  delay(100);
753  digitalWrite(led3 ,
754  LOW);
755  digitalWrite(led6 , LOW);
756  delay(100);
757  digitalWrite(led2 , LOW);
758
759  digitalWrite(led7 , LOW);
760  delay(100);
761  digitalWrite(led1 , LOW);
762
763  digitalWrite(led8 , LOW);
764  delay(100);//this is the break
765   digitalWrite(led4
766  , HIGH);
767  digitalWrite(led5 , HIGH);
768  delay(100);
769  digitalWrite(led3
770  , HIGH);
771  digitalWrite(led6 , HIGH);
772  delay(100);
773  digitalWrite(led2
774  , HIGH);
775  digitalWrite(led7 , HIGH);
776  delay(100);
777  digitalWrite(led1
778  , HIGH);
779  digitalWrite(led8 , HIGH);
780  delay(100);
781  digitalWrite(led1
782  , LOW);
783  digitalWrite(led8 , LOW);
784  delay(100);
785  digitalWrite(led2 ,
786  LOW);
787  digitalWrite(led7 , LOW);
788  delay(100);
789  digitalWrite(led3 , LOW);
790
791  digitalWrite(led6 , LOW);
792  delay(100);
793  digitalWrite(led4 , LOW);
794
795  digitalWrite(led5 , LOW);
796  delay(200);
797  } else {
798    digitalWrite(led1
799  , LOW);
800  digitalWrite(led2 , LOW);
801  digitalWrite(led3 , LOW);
802  digitalWrite(led4
803  , LOW);
804  digitalWrite(led5 , LOW);
805  digitalWrite(led6 , LOW);
806  digitalWrite(led7
807  , LOW);
808  digitalWrite(led8 , LOW);
809  delay(100);
810    
811  
812  
813
814  
815  
816  
817
818 
819  
820  
821  
822
823}
824  
825}
826

const int led1 = 2;
const int led2 = 3;
const int led3 = 4;
const
  int led4 = 5;
const int led5 = 6;
const int led6 = 7;
const int led7 =
  8;
const int led8 = 9;
const int BUTTON1Pin= 12 ;
const int BUTTON2Pin=
  11 ;
const int BUTTON3Pin= 10 ;
const int BUTTON4Pin= 13 ;                                                                                      

int
  BUTTON1State = 0;
int BUTTON2State = 0;
int BUTTON3State = 0;
int BUTTON4State
  = 0;
void setup() {
 
  pinMode(led1,OUTPUT);
  pinMode(led2,OUTPUT);

  pinMode(led3,OUTPUT);
  pinMode(led4,OUTPUT);
  pinMode(led5,OUTPUT);

  pinMode(led6,OUTPUT);
  pinMode(led7,OUTPUT);
  pinMode(led8,OUTPUT);

  pinMode(BUTTON1Pin,INPUT);
  pinMode(BUTTON2Pin,INPUT);
  pinMode(BUTTON3Pin,INPUT);

  pinMode(BUTTON4Pin,INPUT);
}

void loop() {
  BUTTON1State = digitalRead(BUTTON1Pin);

  BUTTON2State = digitalRead(BUTTON2Pin);
  BUTTON3State = digitalRead(BUTTON3Pin);

  BUTTON4State = digitalRead(BUTTON4Pin);
  if (BUTTON1State == HIGH) {
    //
  turn LED on:
    digitalWrite(led1 , HIGH);
  digitalWrite(led2 , HIGH);

  digitalWrite(led3 , HIGH);
  digitalWrite(led4 , HIGH);
  digitalWrite(led5
  , HIGH);
  digitalWrite(led6 , HIGH);
  digitalWrite(led7 , HIGH);
  digitalWrite(led8
  , HIGH);
  delay(900);
  digitalWrite(led1 , LOW);
  digitalWrite(led2
  , LOW);
  digitalWrite(led3 , LOW);
  digitalWrite(led4 , LOW);
  digitalWrite(led5
  , LOW);
  digitalWrite(led6 , LOW);
  digitalWrite(led7 , LOW);
  digitalWrite(led8
  , LOW);
  delay(100);
  digitalWrite(led1 , HIGH);
  digitalWrite(led2
  , LOW);
  digitalWrite(led3 , HIGH);
  digitalWrite(led4 , LOW);
  digitalWrite(led5
  , HIGH);
  digitalWrite(led6 , LOW);
  digitalWrite(led7 , HIGH);
  digitalWrite(led8
  , LOW);
  delay(900);
  digitalWrite(led1 , LOW);
  digitalWrite(led2 ,
  LOW);
  digitalWrite(led3 , LOW);
  digitalWrite(led4 , LOW);
  digitalWrite(led5
  , LOW);
  digitalWrite(led6 , LOW);
  digitalWrite(led7 , LOW);
  digitalWrite(led8
  , LOW);
  delay(100);
  digitalWrite(led1 , LOW);
  digitalWrite(led2 ,
  HIGH);
  digitalWrite(led3 , LOW);
  digitalWrite(led4 , HIGH);
  digitalWrite(led5
  , LOW);
  digitalWrite(led6 , HIGH);
  digitalWrite(led7 , LOW);
  digitalWrite(led8
  , HIGH);
  delay(900);
  digitalWrite(led1 , LOW);
  digitalWrite(led2
  , LOW);
  digitalWrite(led3 , LOW);
  digitalWrite(led4 , LOW);
  digitalWrite(led5
  , LOW);
  digitalWrite(led6 , LOW);
  digitalWrite(led7 , LOW);
  digitalWrite(led8
  , LOW);
  delay(100);
  digitalWrite(led1 , HIGH);
  digitalWrite(led2
  , HIGH);
  digitalWrite(led3 , HIGH);
  digitalWrite(led4 , HIGH);
  digitalWrite(led5
  , HIGH);
  digitalWrite(led6 , HIGH);
  digitalWrite(led7 , HIGH);
  digitalWrite(led8
  , HIGH);
  delay(900);
  digitalWrite(led1 , LOW);
  digitalWrite(led2
  , LOW);
  digitalWrite(led3 , LOW);
  digitalWrite(led4 , LOW);
  digitalWrite(led5
  , LOW);
  digitalWrite(led6 , LOW);
  digitalWrite(led7 , LOW);
  digitalWrite(led8
  , LOW);
  delay(100);
  digitalWrite(led1 , HIGH);
  digitalWrite(led2
  , LOW);
  digitalWrite(led3 , HIGH);
  digitalWrite(led4 , LOW);
  digitalWrite(led5
  , HIGH);
  digitalWrite(led6 , LOW);
  digitalWrite(led7 , HIGH);
  digitalWrite(led8
  , LOW);
  delay(900);
  digitalWrite(led1 , LOW);
  digitalWrite(led2 ,
  LOW);
  digitalWrite(led3 , LOW);
  digitalWrite(led4 , LOW);
  digitalWrite(led5
  , LOW);
  digitalWrite(led6 , LOW);
  digitalWrite(led7 , LOW);
  digitalWrite(led8
  , LOW);
  delay(100);
  digitalWrite(led1 , LOW);
  digitalWrite(led2 ,
  HIGH);
  digitalWrite(led3 , LOW);
  digitalWrite(led4 , HIGH);
  digitalWrite(led5
  , LOW);
  digitalWrite(led6 , HIGH);
  digitalWrite(led7 , LOW);
  digitalWrite(led8
  , HIGH);
  delay(900);
  digitalWrite(led1 , LOW);
  digitalWrite(led2
  , LOW);
  digitalWrite(led3 , LOW);
  digitalWrite(led4 , LOW);
  digitalWrite(led5
  , LOW);
  digitalWrite(led6 , LOW);
  digitalWrite(led7 , LOW);
  digitalWrite(led8
  , LOW);
  delay(100);
  } else {
    digitalWrite(led1 , LOW);
  digitalWrite(led2
  , LOW);
  digitalWrite(led3 , LOW);
  digitalWrite(led4 , LOW);
  digitalWrite(led5
  , LOW);
  digitalWrite(led6 , LOW);
  digitalWrite(led7 , LOW);
  digitalWrite(led8
  , LOW);
  delay(100);
  }
  if (BUTTON2State == HIGH) {
    digitalWrite(led1
  , HIGH);
  delay(100);
  digitalWrite(led1 , LOW);
  digitalWrite(led2
  , HIGH);
  delay(100);
  digitalWrite(led2 , LOW);
  digitalWrite(led3
  , HIGH);
  delay(100);
  digitalWrite(led3 , LOW);
  digitalWrite(led4
  , HIGH);
  delay(100);
  digitalWrite(led4 , LOW);
  digitalWrite(led5
  , HIGH);
  delay(100);
  digitalWrite(led5 , LOW);
  digitalWrite(led6
  , HIGH);
  delay(100);
  digitalWrite(led6 , LOW);
  digitalWrite(led7
  , HIGH);
  delay(100);
  digitalWrite(led7 , LOW);
  digitalWrite(led8
  , HIGH);
  delay(100);
  digitalWrite(led8 , LOW);
  delay(100);//this
  is the break 
  digitalWrite(led8 , HIGH);
  delay(100);
  digitalWrite(led8
  , LOW);
  digitalWrite(led7 , HIGH);
  delay(100);
  digitalWrite(led7
  , LOW);
  digitalWrite(led6 , HIGH);
  delay(100);
  digitalWrite(led6
  , LOW);
  digitalWrite(led5 , HIGH);
  delay(100);
  digitalWrite(led5
  , LOW);
  digitalWrite(led4 , HIGH);
  delay(100);
  digitalWrite(led4
  , LOW);
  digitalWrite(led3 , HIGH);
  delay(100);
  digitalWrite(led3
  , LOW);
  digitalWrite(led2 , HIGH);
  delay(100);
  digitalWrite(led2
  , LOW);
  digitalWrite(led1 , HIGH);
  delay(100);
  digitalWrite(led1
  , LOW);
  delay(100);//this is the break 
  digitalWrite(led1 , HIGH);

  delay(100);
  digitalWrite(led1 , LOW);
  digitalWrite(led2 , HIGH);

  delay(100);
  digitalWrite(led2 , LOW);
  digitalWrite(led3 , HIGH);

  delay(100);
  digitalWrite(led3 , LOW);
  digitalWrite(led4 , HIGH);

  delay(100);
  digitalWrite(led4 , LOW);
  digitalWrite(led5 , HIGH);

  delay(100);
  digitalWrite(led5 , LOW);
  digitalWrite(led6 , HIGH);

  delay(100);
  digitalWrite(led6 , LOW);
  digitalWrite(led7 , HIGH);

  delay(100);
  digitalWrite(led7 , LOW);
  digitalWrite(led8 , HIGH);

  delay(100);
  digitalWrite(led8 , LOW);
  delay(100);//this is the break
  
  digitalWrite(led8 , HIGH);
  delay(100);
  digitalWrite(led8 , LOW);

  digitalWrite(led7 , HIGH);
  delay(100);
  digitalWrite(led7 , LOW);

  digitalWrite(led6 , HIGH);
  delay(100);
  digitalWrite(led6 , LOW);

  digitalWrite(led5 , HIGH);
  delay(100);
  digitalWrite(led5 , LOW);

  digitalWrite(led4 , HIGH);
  delay(100);
  digitalWrite(led4 , LOW);

  digitalWrite(led3 , HIGH);
  delay(100);
  digitalWrite(led3 , LOW);

  digitalWrite(led2 , HIGH);
  delay(100);
  digitalWrite(led2 , LOW);

  digitalWrite(led1 , HIGH);
  delay(100);
  digitalWrite(led1 , LOW);

  delay(100);//this is the break 
  }else{
    digitalWrite(led1 , LOW);

  digitalWrite(led2 , LOW);
  digitalWrite(led3 , LOW);
  digitalWrite(led4
  , LOW);
  digitalWrite(led5 , LOW);
  digitalWrite(led6 , LOW);
  digitalWrite(led7
  , LOW);
  digitalWrite(led8 , LOW);
  delay(100);
    
  }
  if (BUTTON3State
  == HIGH) {
    digitalWrite(led1 , HIGH);
  delay(100);
  digitalWrite(led2
  , HIGH);
  delay(100);
  digitalWrite(led3 , HIGH);
  delay(100);
  digitalWrite(led4
  , HIGH);
  delay(100);
  digitalWrite(led5 , HIGH);
  delay(100);
  digitalWrite(led6
  , HIGH);
  delay(100);
  digitalWrite(led7 , HIGH);
  delay(100);
  digitalWrite(led8
  , HIGH);
  delay(100);
  digitalWrite(led1 , LOW);
  delay(100);
  digitalWrite(led2
  , LOW);
  delay(100);
  digitalWrite(led3 , LOW);
  delay(100);
  digitalWrite(led4
  , LOW);
  delay(100);
  digitalWrite(led5 , LOW);
  delay(100);
  digitalWrite(led6
  , LOW);
  delay(100);
  digitalWrite(led7 , LOW);
  delay(100);
  digitalWrite(led8
  ,LOW);
  delay(100);//this is the break
  digitalWrite(led8 , HIGH);
  delay(100);

  digitalWrite(led7 , HIGH);
  delay(100);
  digitalWrite(led6 , HIGH);

  delay(100);
  digitalWrite(led5 , HIGH);
  delay(100);
  digitalWrite(led4
  , HIGH);
  delay(100);
  digitalWrite(led3 , HIGH);
  delay(100);
  digitalWrite(led2
  , HIGH);
  delay(100);
  digitalWrite(led1 , HIGH);
  delay(100);
  digitalWrite(led8
  , LOW);
  delay(100);
  digitalWrite(led7 , LOW);
  delay(100);
  digitalWrite(led6
  , LOW);
  delay(100);
  digitalWrite(led5 , LOW);
  delay(100);
  digitalWrite(led4
  , LOW);
  delay(100);
  digitalWrite(led3 , LOW);
  delay(100);
  digitalWrite(led2
  , LOW);
  delay(100);
  digitalWrite(led1 , LOW);
  delay(100);//this is
  the break
  digitalWrite(led1 , HIGH);
  delay(100);
  digitalWrite(led2
  , HIGH);
  delay(100);
  digitalWrite(led3 , HIGH);
  delay(100);
  digitalWrite(led4
  , HIGH);
  delay(100);
  digitalWrite(led5 , HIGH);
  delay(100);
  digitalWrite(led6
  , HIGH);
  delay(100);
  digitalWrite(led7 , HIGH);
  delay(100);
  digitalWrite(led8
  , HIGH);
  delay(100);
  digitalWrite(led8 , LOW);
  delay(100);
  digitalWrite(led7
  , LOW);
  delay(100);
  digitalWrite(led6 , LOW);
  delay(100);
  digitalWrite(led5
  , LOW);
  delay(100);
  digitalWrite(led4 , LOW);
  delay(100);
  digitalWrite(led3
  , LOW);
  delay(100);
  digitalWrite(led2 , LOW);
  delay(100);
  digitalWrite(led1
  ,LOW);
  delay(100);//this is the break
  digitalWrite(led8 , HIGH);
  delay(100);

  digitalWrite(led7 , HIGH);
  delay(100);
  digitalWrite(led6 , HIGH);

  delay(100);
  digitalWrite(led5 , HIGH);
  delay(100);
  digitalWrite(led4
  , HIGH);
  delay(100);
  digitalWrite(led3 , HIGH);
  delay(100);
  digitalWrite(led2
  , HIGH);
  delay(100);
  digitalWrite(led1 , HIGH);
  delay(100);
  digitalWrite(led1
  , LOW);
  delay(100);
  digitalWrite(led2 , LOW);
  delay(100);
  digitalWrite(led3
  , LOW);
  delay(100);
  digitalWrite(led4 , LOW);
  delay(100);
  digitalWrite(led5
  , LOW);
  delay(100);
  digitalWrite(led6 , LOW);
  delay(100);
  digitalWrite(led7
  , LOW);
  delay(100);
  digitalWrite(led8 , LOW);
  delay(100);
  }
  else{
    digitalWrite(led1 , LOW);
  digitalWrite(led2 , LOW);
  digitalWrite(led3
  , LOW);
  digitalWrite(led4 , LOW);
  digitalWrite(led5 , LOW);
  digitalWrite(led6
  , LOW);
  digitalWrite(led7 , LOW);
  digitalWrite(led8 , LOW);
  delay(100);

    
  }
  if (BUTTON4State == HIGH) {
    digitalWrite(led1 , HIGH);

  digitalWrite(led8 , HIGH);
  delay(100);
  digitalWrite(led2 , HIGH);

  digitalWrite(led7 , HIGH);
  delay(100);
  digitalWrite(led3 , HIGH);

  digitalWrite(led6 , HIGH);
  delay(100);
  digitalWrite(led4 , HIGH);

  digitalWrite(led5 , HIGH);
  delay(100);
  digitalWrite(led4 , LOW);

  digitalWrite(led5 , LOW);
  delay(100);
  digitalWrite(led3 , LOW);

  digitalWrite(led6 , LOW);
  delay(100);
  digitalWrite(led2 , LOW);

  digitalWrite(led7 , LOW);
  delay(100);
  digitalWrite(led1 , LOW);

  digitalWrite(led8 , LOW);
  delay(100);//this is the break
  digitalWrite(led1
  , HIGH);
  digitalWrite(led8 , HIGH);
  delay(100);
  digitalWrite(led2
  , HIGH);
  digitalWrite(led7 , HIGH);
  delay(100);
  digitalWrite(led3
  , HIGH);
  digitalWrite(led6 , HIGH);
  delay(100);
  digitalWrite(led4
  , HIGH);
  digitalWrite(led5 , HIGH);
  delay(100);
  digitalWrite(led1
  , LOW);
  digitalWrite(led8 , LOW);
  delay(100);
  digitalWrite(led2 ,
  LOW);
  digitalWrite(led7 , LOW);
  delay(100);
  digitalWrite(led3 , LOW);

  digitalWrite(led6 , LOW);
  delay(100);
  digitalWrite(led4 , LOW);

  digitalWrite(led5 , LOW);
  delay(100);//this is the brek
  digitalWrite(led4
  , HIGH);
  digitalWrite(led5 , HIGH);
  delay(100);
  digitalWrite(led3
  , HIGH);
  digitalWrite(led6 , HIGH);
  delay(100);
  digitalWrite(led2
  , HIGH);
  digitalWrite(led7 , HIGH);
  delay(100);
  digitalWrite(led1
  , HIGH);
  digitalWrite(led8 , HIGH);
  delay(100);
  digitalWrite(led4
  , LOW);
  digitalWrite(led5 , LOW);
  delay(100);
  digitalWrite(led3 ,
  LOW);
  digitalWrite(led6 , LOW);
  delay(100);
  digitalWrite(led2 , LOW);

  digitalWrite(led7 , LOW);
  delay(100);
  digitalWrite(led1 , LOW);

  digitalWrite(led8 , LOW);
  delay(100);//this is the break
   digitalWrite(led4
  , HIGH);
  digitalWrite(led5 , HIGH);
  delay(100);
  digitalWrite(led3
  , HIGH);
  digitalWrite(led6 , HIGH);
  delay(100);
  digitalWrite(led2
  , HIGH);
  digitalWrite(led7 , HIGH);
  delay(100);
  digitalWrite(led1
  , HIGH);
  digitalWrite(led8 , HIGH);
  delay(100);
  digitalWrite(led1
  , LOW);
  digitalWrite(led8 , LOW);
  delay(100);
  digitalWrite(led2 ,
  LOW);
  digitalWrite(led7 , LOW);
  delay(100);
  digitalWrite(led3 , LOW);

  digitalWrite(led6 , LOW);
  delay(100);
  digitalWrite(led4 , LOW);

  digitalWrite(led5 , LOW);
  delay(200);
  digitalWrite(led1 , HIGH);

  digitalWrite(led8 , HIGH);
  delay(100);
  digitalWrite(led2 , HIGH);

  digitalWrite(led7 , HIGH);
  delay(100);
  digitalWrite(led3 , HIGH);

  digitalWrite(led6 , HIGH);
  delay(100);
  digitalWrite(led4 , HIGH);

  digitalWrite(led5 , HIGH);
  delay(100);
  digitalWrite(led4 , LOW);

  digitalWrite(led5 , LOW);
  delay(100);
  digitalWrite(led3 , LOW);

  digitalWrite(led6 , LOW);
  delay(100);
  digitalWrite(led2 , LOW);

  digitalWrite(led7 , LOW);
  delay(100);
  digitalWrite(led1 , LOW);

  digitalWrite(led8 , LOW);
  delay(100);//this is the break
  digitalWrite(led1
  , HIGH);
  digitalWrite(led8 , HIGH);
  delay(100);
  digitalWrite(led2
  , HIGH);
  digitalWrite(led7 , HIGH);
  delay(100);
  digitalWrite(led3
  , HIGH);
  digitalWrite(led6 , HIGH);
  delay(100);
  digitalWrite(led4
  , HIGH);
  digitalWrite(led5 , HIGH);
  delay(100);
  digitalWrite(led1
  , LOW);
  digitalWrite(led8 , LOW);
  delay(100);
  digitalWrite(led2 ,
  LOW);
  digitalWrite(led7 , LOW);
  delay(100);
  digitalWrite(led3 , LOW);

  digitalWrite(led6 , LOW);
  delay(100);
  digitalWrite(led4 , LOW);

  digitalWrite(led5 , LOW);
  delay(100);//this is the brek
  digitalWrite(led4
  , HIGH);
  digitalWrite(led5 , HIGH);
  delay(100);
  digitalWrite(led3
  , HIGH);
  digitalWrite(led6 , HIGH);
  delay(100);
  digitalWrite(led2
  , HIGH);
  digitalWrite(led7 , HIGH);
  delay(100);
  digitalWrite(led1
  , HIGH);
  digitalWrite(led8 , HIGH);
  delay(100);
  digitalWrite(led4
  , LOW);
  digitalWrite(led5 , LOW);
  delay(100);
  digitalWrite(led3 ,
  LOW);
  digitalWrite(led6 , LOW);
  delay(100);
  digitalWrite(led2 , LOW);

  digitalWrite(led7 , LOW);
  delay(100);
  digitalWrite(led1 , LOW);

  digitalWrite(led8 , LOW);
  delay(100);//this is the break
   digitalWrite(led4
  , HIGH);
  digitalWrite(led5 , HIGH);
  delay(100);
  digitalWrite(led3
  , HIGH);
  digitalWrite(led6 , HIGH);
  delay(100);
  digitalWrite(led2
  , HIGH);
  digitalWrite(led7 , HIGH);
  delay(100);
  digitalWrite(led1
  , HIGH);
  digitalWrite(led8 , HIGH);
  delay(100);
  digitalWrite(led1
  , LOW);
  digitalWrite(led8 , LOW);
  delay(100);
  digitalWrite(led2 ,
  LOW);
  digitalWrite(led7 , LOW);
  delay(100);
  digitalWrite(led3 , LOW);

  digitalWrite(led6 , LOW);
  delay(100);
  digitalWrite(led4 , LOW);

  digitalWrite(led5 , LOW);
  delay(200);
  } else {
    digitalWrite(led1
  , LOW);
  digitalWrite(led2 , LOW);
  digitalWrite(led3 , LOW);
  digitalWrite(led4
  , LOW);
  digitalWrite(led5 , LOW);
  digitalWrite(led6 , LOW);
  digitalWrite(led7
  , LOW);
  digitalWrite(led8 , LOW);
  delay(100);
    
  
  

  
  
  

 
  
  
  

}
  
}

Downloadable files

Circuit Diagram

For those who have four pushbuttons.

Circuit Diagram

For those who do not have four.

Circuit Diagram

For those who do not have four.

Circuit Diagram

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