#include <Keypad.h>
#include<Servo.h>
Servo s;
const byte ROWS = 4; //four rows
const byte COLS = 4; //three columns
char keys[ROWS][COLS] = {
  {'1','2','3','A'},
  {'4','5','6','B'},
  {'7','8','9','C'},
  {'*','0','#','D'}
};
byte rowPins[ROWS] = {9,8,7,6}; //connect to the row pinouts of the keypad
byte colPins[COLS] = {5,4,3,2}; //connect to the column pinouts of the keypad

Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );

void setup(){
  Serial.begin(9600);
  s.attach(10);
}
  
void loop(){
  char key = keypad.getKey(); 
  if (key){
    Serial.println(key);
    if (key=='0'){ s.write(0);}
    else if(key=='1'){s.write(90);}
    else if (key=='2'){s.write(180);}
    else if(key == '9'){
      s.write(0);
      delay(1000);
      s.write(90);
      delay(1000);
      s.write(180);
      delay(1000);
    }
  }
}