#define SWITCH_PIN D0  
#define R1 D1         
 #define R2 D2           
   #define R3 D5           
     #define R4 D6           
     #define R5 D7          
   #define R6 D8           
 #define R7 3            
#define R8 1            


const unsigned long stepDelay = 1000;

void setup() {
  
  pinMode(SWITCH_PIN, INPUT);  

  
  pinMode(R1, OUTPUT);
   pinMode(R2, OUTPUT);
     pinMode(R3, OUTPUT);
       pinMode(R4, OUTPUT);
         pinMode(R5, OUTPUT);
           pinMode(R6, OUTPUT);
             pinMode(R7, OUTPUT);
               pinMode(R8, OUTPUT);

  
               digitalWrite(R1, LOW);
              digitalWrite(R2, LOW);
            digitalWrite(R3, LOW);
         digitalWrite(R4, LOW);
       digitalWrite(R5, LOW);
     digitalWrite(R6, LOW);
   digitalWrite(R7, LOW);
  digitalWrite(R8, LOW);
}

void loop() {
  int switchState = digitalRead(SWITCH_PIN);

  if (switchState == LOW) { 
    delay(300); 

    digitalWrite(R1, HIGH);
     delay(stepDelay);
        digitalWrite(R2, HIGH);
         delay(stepDelay);
           digitalWrite(R3, HIGH);
             delay(stepDelay);
              digitalWrite(R4, HIGH);
                delay(stepDelay);
                 digitalWrite(R5, HIGH);
                   delay(stepDelay);
                     digitalWrite(R6, HIGH);
                       delay(stepDelay);
                         digitalWrite(R7, HIGH);
                           delay(stepDelay);
                             digitalWrite(R8, HIGH);
    
  } else {  
    delay(300); 

                               digitalWrite(R8, LOW);
                             delay(stepDelay);
                           digitalWrite(R7, LOW);
                         delay(stepDelay);
                       digitalWrite(R6, LOW);
                     delay(stepDelay);
                   digitalWrite(R5, LOW);
                 delay(stepDelay);
               digitalWrite(R4, LOW);
             delay(stepDelay);
           digitalWrite(R3, LOW);
         delay(stepDelay);
       digitalWrite(R2, LOW);
     delay(stepDelay);
    digitalWrite(R1, LOW);
  }

  delay(10); 
}