#define yellow D0
#define red D1
#define white D2
#define blue D3
#define green D4
#define button D7

int stoppingTime=250;
void setup() {
   // put your setup code here, to run once:
  pinMode(yellow, OUTPUT);
  pinMode(red, OUTPUT);
  pinMode(white, OUTPUT);
  pinMode(blue, OUTPUT);
  pinMode(green, OUTPUT);
  pinMode(button, INPUT_PULLDOWN);
 }
void loop(){
 if(digitalRead (button)== LOW){
  light();
 }
 else{
 digitalWrite(yellow, LOW);
 digitalWrite(red, LOW);
 digitalWrite(white, LOW);
 digitalWrite(red, LOW);
 digitalWrite(green, LOW);
 }

}
void light() {
  // put your main code here, to run repeatedly:
 digitalWrite(yellow, HIGH);  
  delay(stoppingTime);  
 digitalWrite(yellow, LOW);  
 digitalWrite(red, HIGH);  
  delay(stoppingTime); 
 digitalWrite(red, LOW);  
 digitalWrite(white, HIGH);  
  delay(stoppingTime); 
 digitalWrite(white, LOW);  
  digitalWrite(blue, HIGH);  
  delay(stoppingTime); 
 digitalWrite(blue, LOW);  
  digitalWrite(green, HIGH);  
  delay(stoppingTime); 
 digitalWrite(green, LOW);  
  
}