#include <LiquidCrystal.h> // LCD library
int acval = 0;
int relay1 = 3; int relay2 = 4;
int relay3 = 5; int relay4 = 6;
//int relay5 = 7;
const int rs = 12, en = 11, d4 = 10, d5 = 9, d6 = 8, d7 = 7;  // with the arduino pin number it is connected to

LiquidCrystal lcd(rs, en, d4, d5, d6, d7);
void setup() {
  Serial.begin(9600);
  Serial.println("meaw");
  pinMode(relay1, OUTPUT);   pinMode(relay2, OUTPUT);  pinMode(relay3, OUTPUT);   pinMode(relay4, OUTPUT);
  //pinMode(relay5, OUTPUT);
  digitalWrite(relay1, 1);   digitalWrite(relay2, 1);  digitalWrite(relay3, 1);   digitalWrite(relay4, 1);
  //digitalWrite(relay5, 1);
  lcd.begin(16, 2);// set up the LCD's number of columns and rows: // (note: line 1 is the second row, since counting begins with 0):
  lcd.setCursor(0, 0);// set the cursor to column 0, line 1
  lcd.print("BOOTING...");//lcd print
  delay(100);//delay
}

void loop() {
  delay(200);
  acval = analogRead(A0);
  Serial.print("AC analog VALUE ");
  Serial.print(acval);
  Serial.println("");
  delay(100);
  if ( acval <= 263)  {
    Serial.println("Voltage is less than 130V ");
    digitalWrite(relay1, 1);
    digitalWrite(relay2, 1);
    digitalWrite(relay3, 1);
    digitalWrite(relay4, 1);
    //digitalWrite(relay5, 1);
  }
  else if (acval >= 263 && acval <= 283)  {
    Serial.println("Voltage is  around 130V ");
    digitalWrite(relay1, 1); //            tapper 1
    digitalWrite(relay2, 1); //             tapper 2
    digitalWrite(relay3, 1); //170 >>192.4  tapper3
    digitalWrite(relay4, 1); //             tapper 4
    //digitalWrite(relay5, 1); //             tapper 5
  }
  else if (acval >= 293 && acval <= 306)  {
    Serial.println("Voltage is  around 140V ");
    digitalWrite(relay1, 1); //            tapper 1
    digitalWrite(relay2, 1); //            tapper 2
    digitalWrite(relay3, 1); //170 >>192.4  tapper3
    digitalWrite(relay4, 1); //             tapper 4
    //digitalWrite(relay5, 1); //             tapper 5
  }
  else if (acval >= 313 && acval <= 335)  {
    Serial.println("Voltage is  around 150V ");
    digitalWrite(relay1, 1); //            tapper 1
    digitalWrite(relay2, 1); //            tapper 2
    digitalWrite(relay3, 1); //170 >>192.4  tapper3
    digitalWrite(relay4, 1); //             tapper 4
    //digitalWrite(relay5, 1); //             tapper 5
  }
  else if (acval >= 342 && acval <= 363)   {
    Serial.println("Voltage is around 160V ");
    digitalWrite(relay1, 1); //            tapper 1
    digitalWrite(relay2, 1); //           tapper 2
    digitalWrite(relay3, 1); //170 >>192.4 tapper3
    digitalWrite(relay4, 1); //           tapper 4
    //digitalWrite(relay5, 1); //           tapper 5
  }
  else if (acval >= 369 && acval <= 394)  {
    Serial.println("Voltage is  around 170V ");
    digitalWrite(relay1, 1); //
    digitalWrite(relay2, 1); //
    digitalWrite(relay3, 1); //170 >>192.4  tapper3
    digitalWrite(relay4, 1); //
    //digitalWrite(relay5, 1); //
  }
  else if (acval >= 392 && acval <= 413)   {
    Serial.println("Voltage is  around 180V ");
    digitalWrite(relay1, 1); //
    digitalWrite(relay2, 1); //
    digitalWrite(relay3, 0); //180 >>204.4  tapper3
    digitalWrite(relay4, 1); //
    //digitalWrite(relay5, 1); //
  }
  else if (acval >= 419 && acval <= 434)  {
    Serial.println("Voltage is  around 190V ");
    digitalWrite(relay1, 1); //            tapper 1
    digitalWrite(relay2, 1); //            tapper 2
    digitalWrite(relay3, 0); //190 >>216.1  tapper3
    digitalWrite(relay4, 1); //            tapper 4
    //digitalWrite(relay5, 1); //            tapper 5
  }
  else if (acval >= 451 && acval <= 474)  {
    Serial.println("Voltage is around 200V ");
    digitalWrite(relay1, 1); //           tapper 1
    digitalWrite(relay2, 0); //  200>>218.5              tapper 2
    digitalWrite(relay3, 1); //  tapper3
    digitalWrite(relay4, 1); //  tapper 4
    //digitalWrite(relay5, 1); //  tapper 5
  }
  else if (acval >= 472 && acval <= 506)  {
    Serial.println("Voltage is  around 210V ");
    digitalWrite(relay1, 0); //    210>>219.5        tapper 1
    digitalWrite(relay2, 1); //                      tapper 2
    digitalWrite(relay3, 1); //                       tapper3
    digitalWrite(relay4, 1); //                       tapper 4
    //digitalWrite(relay5, 1); //                       tapper 5
  }
  else if (acval >= 483 && acval <= 512)  {
    Serial.println("Voltage is around 215V ");
    digitalWrite(relay1, 1); //           tapper 1
    digitalWrite(relay2, 1); //           tapper 2
    digitalWrite(relay3, 1); //            tapper3
    digitalWrite(relay4, 0); //215>>215.5       tapper 4
    //digitalWrite(relay5, 1); //            tapper 5
  }
  else if (acval >= 488 && acval <= 525)  {
    Serial.println("Voltage is  around 220V ");
    digitalWrite(relay1, 1); //            tapper 1
    digitalWrite(relay2, 1); //            tapper 2
    digitalWrite(relay3, 1); //            tapper3
    digitalWrite(relay4, 0); //220>>220.1        tapper 4
    //digitalWrite(relay5, 1); //            tapper 5
  }
  else if (acval >= 500 && acval <= 535)  {
    Serial.println("Voltage is  around 222V ");
    digitalWrite(relay1, 1); //            tapper 1
    digitalWrite(relay2, 1); //            tapper 2
    digitalWrite(relay3, 1); //            tapper3
    digitalWrite(relay4, 1); //            tapper 4
    //digitalWrite(relay5, 0); // 222>220.2   tapper 5
  }
  else if (acval >= 507 && acval <= 542)  {
    Serial.println("Voltage is  around 225V ");
    digitalWrite(relay1, 1); //           tapper 1
    digitalWrite(relay2, 1); //           tapper 2
    digitalWrite(relay3, 1); //170 >>192.4  tapper3
    digitalWrite(relay4, 1); //           tapper 4
    //digitalWrite(relay5, 0); //            tapper 5
  }
  else if (acval >= 511 && acval <= 536)  {
    Serial.println("Voltage is  around 228V ");
    digitalWrite(relay1, 1); //            tapper 1
    digitalWrite(relay2, 1); //            tapper 2
    digitalWrite(relay3, 1); //170 >>192.4  tapper3
    digitalWrite(relay4, 1); //            tapper 4
    //digitalWrite(relay5, 0); // 228>>217.6  tapper 5
  }
  else if (acval >= 537 && acval <= 552)  {
    Serial.println("Voltage is around 230V ");
    digitalWrite(relay1, 1); //            tapper 1
    digitalWrite(relay2, 1); //            tapper 2
    digitalWrite(relay3, 1); //            tapper3
    digitalWrite(relay4, 1); //            tapper 4
    // digitalWrite(relay5, 0); //230>>219.3  tapper 5
  }
  else if (acval >= 580)  {
    Serial.println("Voltage is  more than 230V  .Warning!! ");
    digitalWrite(relay1, 1); //            tapper 1
    digitalWrite(relay2, 1); //            tapper 2
    digitalWrite(relay3, 1); //170 >>192.4  tapper3
    digitalWrite(relay4, 1); //            tapper 4
    //digitalWrite(relay5, 1); //            tapper 5
  }
}