#include <LiquidCrystal.h>
#define apin A0
#define leda 4
#define ledb 5
#define ledc 6
LiquidCrystal lcd(12, 11, 10, 9, 8, 7);
int i = 0;
void fun(int a, int b, int c);
void setup() {
  pinMode(leda, OUTPUT);
  pinMode(ledb, OUTPUT);
  pinMode(ledc, OUTPUT);
  lcd.begin(16, 2);
  lcd.print("ADC value");
  Serial.print("ADC value");
  Serial.begin(9600);
  i = 0;
}
void loop() {
  float val = analogRead(A0);
  lcd.setCursor(10, 0);
  lcd.print( val);
  Serial.println(val);
  if (val < 300) {
    fun(1, 0, 0);
  }
  else if (val < 600) {
    fun(1, 1, 0);
  }
  else {
    fun(1, 1, 1);
  }
}
void fun(int a, int b, int c) {
  digitalWrite(leda, a);
  digitalWrite(ledb, b);
  digitalWrite(ledc, c);
  delay(500);
}