#include <Servo.h>

Servo myservo; // create servo object to control a servo
int servoPin = 9; // set the pin for the servo

int button_01 = 2;
int button_02 = 3;
int button_03 = 13;

int i = 0;
int servoAngles[10] = {10, 90, 30, 120, 60, 150, 90, 180, 100, 20}; // initialize array of servo angles

bool state_1 = 0;
bool state_2 = 0;
bool state_3 = 0;

void setup() {
  myservo.attach(servoPin); // attaches the servo on pin 9 to the servo object
  pinMode(button_01, INPUT_PULLUP); // enable internal pull-up resistors for the buttons
  pinMode(button_02, INPUT_PULLUP);
  pinMode(button_03, INPUT_PULLUP);
  Serial.begin(9600);
}

void loop() {
  // code for button 1
  if (digitalRead(button_01) == LOW && state_1 == 0) { // check if button 1 is pressed and not already processed
    state_1 = 1; // set state to 1 to indicate button press is processed
    delay(50); // Add a short delay to prevent multiple executions
    if (i < 9) {
      i++; // increment index in array
    } else {
      i = 0; // reset index to 0 if it reaches the end of the array
    }
    Serial.print("Selected angle: ");
    Serial.println(servoAngles[i]);
    delay(100); // Add a delay to prevent multiple executions
    state_1 = 0; // set state back to 0 to indicate processing is completed
  }

  // code for button 2
  if (digitalRead(button_02) == LOW && state_2 == 0) { // check if button 2 is pressed and not already processed
    state_2 = 1; // set state to 1 to indicate button press is processed
    delay(50); // Add a short delay to prevent multiple executions
    if (i > 0) {
      i--; // decrement index in array
    } else {
      i = 9; // set index to the end of the array if it reaches 0
    }
    Serial.print("Selected angle: ");
    Serial.println(servoAngles[i]);
    delay(100); // Add a delay to prevent multiple executions
    state_2 = 0; // set state back to 0 to indicate processing is completed
  }

  // code for button 3
  if (digitalRead(button_03) == LOW && state_3 == 0) { // check if button 3 is pressed and not already processed
    state_3 = 1; // set state to 1 to indicate button press is processed
    myservo.write(servoAngles[i]);
    Serial.print("Set angle: ");
    Serial.println(servoAngles[i]);
    delay(100); // Add a delay to prevent multiple executions
    state_3 = 0; // set state back to 0 to indicate processing is completed
  }
}