/* author arvind patil led scroll ,chase to and fro
select the led array refer to microcontroller board
for arduino 
for arduino uno int ARVINDS[]=  {2,3,4,5,6,7,8,9,10,11,12,13}; 
for rasberi pico
int ARVINDS[]=  {1,3,4,5,6,7,8,9,10,11,12,13}; 
for esp32 dev kit 30pin 
int ARVINDs[] = {15,2,4,5,18,19,21,22,23,26,27,32,33,};

 A PROJECT BY ARVIND PATIL

*/
int ARVINDsCount = 13;             
 
int ARVINDs[] = {15,2,4,5,18,19,21,22,23,26,27,32,33,35};

void setup() {
  for (int i = 0; i < ARVINDsCount; i = i + 1) {    
    pinMode(ARVINDs[i], OUTPUT);                   
  }
}

void loop() {
  for (int i = 0; i < ARVINDsCount; i = i + 1) { 
    digitalWrite(ARVINDs[i], HIGH);     
    delay(300);                         
    digitalWrite(ARVINDs[i], LOW);     
  }
  for (int i = ARVINDsCount - 1; i > 0; i = i - 1) {
    digitalWrite(ARVINDs[i], HIGH);                
    delay(300);                                      
    digitalWrite(ARVINDs[i], LOW);    
  }
}