SMART HYDROPONIC -V1

//CREATED BY M. AFDAL ZIKRI

//BPVP BELITUNG

#include <EEPROM.h>

#include <LiquidCrystal_I2C.h>

#include <Keypad.h>

const int baris = 4;

const int kolom = 4;

LiquidCrystal_I2C lcd(0x27, 16, 2);

char kar [4][4]= {

  {'1','2','3','A'},

  {'4','5','6','B'},

  {'7','8','9','C'},

  {'*','0','#','D'}

};

byte pinBaris [baris] = {13,12,11,10};

byte pinKolom [kolom] = {7,6,5,4};

Keypad keypad = Keypad(makeKeymap(kar), pinBaris, pinKolom, baris, kolom);

String data = "";

int kursor = 9;

bool bled = false;

bool led = false;

bool nutrisi = false;

int baca;

bool buzz = false;

float sensor;

unsigned long last =0;

bool lcdOn = true;

bool modeKedip = false;

unsigned int lastKedip = 0;

byte ceklis[8] = {

  B01110,

  B11011,

  B10101,

  B10101,

  B11111,

  B00100,

  B01110,

  B11111

};

byte noCeklis[8] = {

  B00000,

  B00000,

  B00000,

  B00000,

  B00000,

  B00000,

  B00000,

  B00000

};

void setup(){

  pinMode(8, OUTPUT);

  pinMode(3, OUTPUT);

  pinMode(2, OUTPUT);

  digitalWrite(3, LOW);

  digitalWrite(2, LOW);

  noTone(8);

  EEPROM.get(0, baca);

  lcd.init();

  lcd.createChar(1, ceklis);

  lcd.createChar(2, noCeklis);

  lcd.setCursor(0,0);

  lcd.print("SET PPM: ");

  lcd.print(baca);

}

void loop(){

  sensor = analogRead(A1);

  float volt = sensor * 5.0 / 1023.0;

  float tds = volt * 2000 / 5.0;

  lcd.setCursor(0,1);

  lcd.print("PPM Air: ");

  lcd.print(String(tds,0));

  lcd.print("  ");

  if(modeKedip){

    kedip();

  }

  char tombol = keypad.getKey();

  int hasil = tombol - '0';

  if(hasil >= 0 && hasil <= 9) {

    modeKedip = true;

    lcd.setCursor(kursor,0);

    lcd.print(hasil);

    lcd.print("           ");

    kursor++;

    data += hasil;

  }

  switch(tombol){

    case '*' :

      EEPROM.put(0,0);

      data = "";

      kursor = 9;

      lcd.noDisplay();

      delay(200);

      lcd.setCursor(9,0);

      lcd.print("           ");

      lcd.display();

      modeKedip = true;

      break;

    case 'A':

    led = !led;

    digitalWrite(3, led);

    break;

    case 'D':

    nutrisi = !nutrisi;

    digitalWrite(2, nutrisi);

    break;

    case 'B':

    if (bled){

      lcd.noBacklight();

    }

    else{

      lcd.backlight();

    }

    bled = !bled;

    break;

    case 'C' :

    buzz = !buzz;

    lcd.setCursor(15,1);

    if(buzz) lcd.write(byte(1));

    else lcd.write(byte(2));

    break;

    case '#':

     modeKedip = false;

     lcd.setCursor(9,0);

     lcd.noDisplay();

     delay(200);

     if (data.length() <= 4) {

      int nilai = data.toInt();

      EEPROM.put(0, nilai);

      EEPROM.get(0, baca);

      lcd.print(baca);

      lcd.print("         ");

     }

      else {

        lcd.print("invalid       ");

      }

      lcd.display();

      kursor = 9;

      data = "";

      break;

  }

  if (buzz){

    if(tds > baca +(baca*0.1)  || tds < baca-(baca*0.1)  ) {

      if(millis()-last > 1000){

      tone(8, 1000, 100);

      last = millis();

      }

    }

    else noTone(8);

  }

  else noTone(8);

}

void kedip() {

  if (millis() - lastKedip >= 500) {

    lastKedip = millis();

    lcdOn = !lcdOn;

    if (lcdOn) {

      lcd.display();

    } else {

      lcd.noDisplay();

    }

  }

}