#include <LiquidCrystal_I2C.h>

#define I2C_ADDR    0x27
#define LCD_COLUMNS 16
#define LCD_LINES   2
 
LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

int sa = 14;
int sb = 15;

int trothle = A0;


bool jumlah;
bool jumlah2;

unsigned int gear;


void setup() {
  // put your setup code here, to run once:
  lcd.init();
  lcd.backlight();
  lcd.setCursor(4,0);
  lcd.print("aracer ");
  lcd.setCursor(3,1);
  lcd.print("speedtek");
  delay(1000);
  lcd.clear();
  Serial.begin(9600);
  pinMode(sa, INPUT);
  pinMode(sb, INPUT);
  pinMode(trothle, INPUT);

  
}

void loop() {
  // put your main code here, to run repeatedly:
  int rpm = analogRead(trothle);
  jumlah = digitalRead(sa);
  Serial.println(jumlah);

  jumlah2 = digitalRead(sb);
  Serial.println(jumlah2);


  rpm = map(trothle,0,1023,0,12000);
  

  if (jumlah == 1){
    gear ++;
  }
  if (jumlah2 == 1){
    gear --;
  }
  lcd.setCursor(0,0); 
  lcd.println(gear);

  lcd.setCursor(0,1);
  Serial.println(trothle);
  
  delay(50);
}