char aa=0;
int bb=0;
char cc=0;
#include <LiquidCrystal.h>
LiquidCrystal lcd(12,11,10,9,8,7);

#if defined(ARDUINO) && ARDUINO >= 100   
#define printByte(args)  write(args);
#else
#define printByte(args)  print(args,BYTE);
#endif


#include <Servo.h>
Servo myservo;

void setup() 
{
  lcd.begin(20,4);
  pinMode(6, INPUT_PULLUP);
  pinMode(5,INPUT_PULLUP);
       lcd.setCursor(0,0);lcd.print(" Stand By ");
       
attachInterrupt(1, stop1, FALLING);

myservo.attach(4,500,2500);
}
void loop()
{
  if(digitalRead(6)==LOW)
      {
       lcd.setCursor(0,0);lcd.print("RUN angle=");
       lcd.setCursor(11,0);lcd.print(bb,DEC); 
       lcd.setCursor(0,1);lcd.print("Num=");
       lcd.setCursor(5,1);lcd.print(cc,DEC);

       aa=1;
        }
  if(aa==1) {myservo.write(bb);bb++;delay(100);lcd.setCursor(11,0);lcd.print(bb,DEC); lcd.print("  ");  
    if(bb==90){aa=2;delay(2000);lcd.setCursor(0,1);lcd.print("Num=");lcd.setCursor(5,1);lcd.print(cc,DEC);  }}      


if(aa==2) {myservo.write(bb);bb--;delay(100);lcd.setCursor(11,0);lcd.print(bb,DEC); lcd.print("  ");  
    if(bb==0){cc++;aa=1;delay(2000);lcd.setCursor(0,1);lcd.print("Num=");lcd.setCursor(5,1);lcd.print(cc,DEC);  }}   

}

void stop1()
{
       lcd.setCursor(0,0);lcd.print(" Stand By       ");
       lcd.setCursor(0,1);lcd.print("                ");
myservo.write(-90); aa=0; bb=0;cc=0;

}