/*
 Controlling a servo position using a potentiometer (variable resistor)
 by Michal Rinott <http://people.interaction-ivrea.it/m.rinott>

 modified on 8 Nov 2013
 by Scott Fitzgerald
 http://www.arduino.cc/en/Tutorial/Knob
*/

#include <Servo.h>
#include <LiquidCrystal_I2C.h>

#define I2C_ADDR 0x27
#define LCD_COLUMNS 20
#define LCD_LINES 2

LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);
#define LED_BUILTIN 4
#define LED_ON  digitalWrite(LED_BUILTIN, HIGH)
#define LED_OFF digitalWrite(LED_BUILTIN, LOW);
#define  KAKI_POTENSIO A0
Servo myservo;  // create servo object to control a servo
int potpin = 0;  // analog pin used to connect the potentiometer
int val;

int progressBari = 0;
int i = 0;

byte progressBar[8] = {
  B11111,
  B11111,
  B11111,
  B11111,
  B11111,
  B11111,
  B11111,
};

int pos = 0;
void setup(){
  pinMode(LED_BUILTIN, OUTPUT);
  Serial.begin(115200);
  Serial.println("16 M ainul mafazi aplikasi sensor, lcd, led, servo sensor potensiometer mulai....");
  
  myservo.attach(9);
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0,0);
  lcd.println("       16      ");
  lcd.setCursor(0,1);
  lcd.println("  Ainul Mafazi  ");
  delay(5000);
  lcd.setCursor(0,1);
  lcd.println("               ");

  lcd.begin(16, 2);
  lcd.print("Posisi : ");
  lcd.createChar(0, progressBar);
}
uint16_t data;
uint16_t pot_pos;
uint16_t servo_pos;


void loop(){
  
  lcd.print("Posisi : ");
  lcd.setCursor(0,1);
  lcd.clear();
  data = analogRead(KAKI_POTENSIO);
  lcd.setCursor(12,0);
  lcd.print(pot_pos);
  progressBari=map(data, 0, 1023, 0, 17);
  for (i=0; i<progressBari; i++)
  
  {
    lcd.setCursor(i, 1);
    lcd.write(byte(0));
  }

  data = analogRead(KAKI_POTENSIO);
  servo_pos = map(data, 0, 1023, 0, 180);
  pot_pos = map(data, 0, 1023, 0, 90);
  Serial.println("raw[" + String(data)+ "], degree[" + String(pot_pos)+"], [" + String(servo_pos)+"]");

  if (pot_pos >=45)
  {
    LED_ON;
    lcd.setCursor(0,0);
    //lcd.println("LED_ON");
  }

  if (pot_pos < 45)
  {
    LED_OFF;
    lcd.setCursor (0,0);
    //lcd.println("LED_OFF");
  }
  {
    val = analogRead(potpin);            // reads the value of the potentiometer (value between 0 and 1023)
    val = map(val, 0, 1023, 0, 180);     // scale it to use it with the servo (value between 0 and 180)
    myservo.write(val);                  // sets the servo position according to the scaled value
    delay(15);                           // waits for the servo to get there
  }
  
  
  
}