#include <LiquidCrystal.h>
LiquidCrystal myLCD(13, 12, 11, 10, 9, 8);

void setup() {
  myLCD.begin(20, 4);
}

void loop() {

  int ADCval;
  float U, R, T, L;

  myLCD.clear();
  myLCD.print("P1=");
  myLCD.print(analogRead(A0));

   myLCD.setCursor(0, 1);
   myLCD.print("P2=");
   myLCD.print(analogRead(A1));

   const float B = 3950;
   ADCval = analogRead(A8);
   T = 1 / (log(1 / (1023. / ADCval - 1)) / B + 1. / 298.15) - 273.15;
   myLCD.setCursor(0, 2);
   myLCD.print("T=");
   myLCD.print(T);
   myLCD.print("\xDF");
   myLCD.print("C");

   const float GAMMA = 0.7;
   const float RL10 = 50;
   ADCval = analogRead(A12);
   U = ADCval / 1024. * 5;
   R = 2000 * U / (1 - U / 5);
   L = pow(RL10 * 1e3 * pow(10, GAMMA) / R, 1 / GAMMA);
   myLCD.setCursor(0, 3);
   myLCD.print("L=");
   myLCD.print(L);
   myLCD.print("Lux");

   delay(300);

   


}