#include <Keypad.h>
#include <ESP32Servo.h>

#define SERVO_PIN 13   // Servo signal pin

Servo myservo;

// Keypad setup
const byte ROWS = 4; // four rows
const byte COLS = 4; // four columns
char keys[ROWS][COLS] = {
  {'1','2','3','A'},
  {'4','5','6','B'},
  {'7','8','9','C'},
  {'*','0','#','D'}
};
byte rowPins[ROWS] = {19, 18, 5, 17}; // connect to the row pinouts of the keypad
byte colPins[COLS] = {16, 4, 2, 15};  // connect to the column pinouts of the keypad

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

void setup() {
  Serial.begin(115200);
  myservo.attach(SERVO_PIN);  
  myservo.write(0);  // start position
}

void loop() {
  char key = keypad.getKey();
  if (key) {
    Serial.print("Key Pressed: ");
    Serial.println(key);

    // Example control: map keys to servo angles
    switch (key) {
      case '1': myservo.write(0); break;
      case '2': myservo.write(45); break;
      case '3': myservo.write(90); break;
      case '4': myservo.write(135); break;
      case '5': myservo.write(180); break;
      default: break;
    }
  }
}
//keypad predefined pins 
//r1-esp19
//r2-esp18
//r3-esp5
//r4-esp17

//c1-esp16
//c2-esp4
//c3-esp2
//c4-esp15

//for servo pin connection
//pmw-esp13
//vcc-5V
//gnd-GND.1