Build Instructions

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  Run a Program

  /*
  *
  *
  * Power LCD and Rotary encoder from the +5V pin of Arduino
  * LCD RS -> pin 7
  * LCD EN -> pin 6
  * LCD D4 -> pin 5
  * LCD D5 -> pin 4
  * LCD D6 -> pin 3
  * LCD D7 -> pin 2
  * Encoder Switch -> pin 10
  * Encoder Output A -> pin 9
  * Encoder Output B -> pin 8
  */

  int Encoder_OuputA = 9;
  int Encoder_OuputB = 8;
  int Encoder_Switch = 10;

  int Previous_Output;
  int Encoder_Count;

  #include //Default Arduino LCD Librarey is included

  const int rs = 7, en = 6, d4 = 5, d5 = 4, d6 = 3, d7 = 2; //Mention the pin number for LCD connection
  LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

  void setup() {
  lcd.begin(16, 2); //Initialise 16*2 LCD

  lcd.print(" Rotary Encoder "); //Intro Message line 1
  lcd.setCursor(0, 1);
  lcd.print(" With Arduino "); //Intro Message line 2

  delay(2000);
  lcd.clear();

  //pin Mode declaration
  pinMode (Encoder_OuputA, INPUT);
  pinMode (Encoder_OuputB, INPUT);
  pinMode (Encoder_Switch, INPUT);

  Previous_Output = digitalRead(Encoder_OuputA); //Read the inital value of Output A
  }

  void loop() {
  //aVal = digitalRead(pinA);
  
  if (digitalRead(Encoder_OuputA) != Previous_Output)
  {
  if (digitalRead(Encoder_OuputB) != Previous_Output)
  {
  Encoder_Count ++;
  lcd.clear();
  lcd.print(Encoder_Count);
  lcd.setCursor(0, 1);
  lcd.print("Clockwise");
  }
  else
  {
  Encoder_Count--;
  lcd.clear();
  lcd.print(Encoder_Count);
  lcd.setCursor(0, 1);
  lcd.print("Anti - Clockwise");
  }
  }

  Previous_Output = digitalRead(Encoder_OuputA);

  if (digitalRead(Encoder_Switch) == 0)
  {
  lcd.clear();
  lcd.setCursor(0, 1);
  lcd.print("Switch pressed");
  }
  }

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