#include <LiquidCrystal.h>
const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2, dout = 13, interval = 5000, Rtop = 20000, A = 0.001125308852122, B = 0.000234711863267, C =  0.000000085663516;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

void setup() {
  // put your setup code here, to run once:
  digitalWrite(dout, HIGH);
  lcd.begin(16, 2);
  // Print a message to the LCD.
  lcd.print("hello, world!");
}

void loop() {
  // put your main code here, to run repeatedly:
  lcd.setCursor(0, 1);
  int diff = analogRead(2);
  int Rbot = diff / 5 * Rtop * (1 / (1 - (diff / 5)));
  int temp =  1 /  (A + B * log(Rbot) + C * pow(log(Rbot), 3));
  // print the number of seconds since reset:
  lcd.print(temp);
  delay(5000);

}