#include <Servo.h>
#include <LiquidCrystal.h>
LiquidCrystal lcd(6,5,4,3,2,1);

int b1 = 10;
int b2 = 9;
int b3 = 8;
int b4 = 7;

Servo myservo;
int pos = 0; 

int angka= 0;
int baca = 0;

int nilai;

int kondisi = 0;
 

void setup() {
  // put your setup code here, to run once:
lcd.begin(16,2);
lcd.setCursor(0,0);
lcd.print("LKS KAB. 2023");

lcd.setCursor(0,1);
lcd.print("ELECTRONICS");
delay(1000);

lcd.clear();

myservo.attach(11);

pinMode(b1, INPUT_PULLUP);
pinMode(b2, INPUT_PULLUP);
pinMode(b3, INPUT_PULLUP);
pinMode(b4, INPUT);
pinMode(A0, INPUT);

}

void loop() {
  // put your main code here, to run repeatedly:
baca = digitalRead(b4);

if(digitalRead(b1)==0){
  kondisi = 1;
}

if(digitalRead(b2)==0){
  kondisi = 2;
}

if(digitalRead(b3)==0){
  kondisi = 3;
}

if(baca==1){
  lcd.clear();
}
switch (kondisi){

case 1:
lcd.setCursor(10,1);
lcd.print(">>>>");
break;

case 2:
lcd.setCursor(10,1);
lcd.print("<-->");
break;

case 3:
lcd.setCursor(10,1);
lcd.print("<<<<");
break;

}

int value = analogRead(A0);
lcd.setCursor(0,0);
lcd.print("RPM    :");
lcd.setCursor(0,1);
lcd.print("posisi :");
lcd.setCursor(10,1);

if(kondisi==1){
  lcd.print("<<<<");
}
if(kondisi==2){
  lcd.print("<-->");
}
if(kondisi==3){
  lcd.print(">>>>");
}

lcd.setCursor(10,0);
lcd.print(value);
myservo.write(value/4);
delay(100);
lcd.clear();
}