#include <LiquidCrystal.h>
//initialze the variables and constant room temp.
int beyazmalzeme = 3;
int metalmalzeme = 2;
//int siyahmalzeme = 21;
int beyazsayici=0;
int metalsayici=0;
//int siyahsayici=0;
//LiquidCrystal beyazlcd1(8, 9, 10, 11, 12, 13);
LiquidCrystal beyazlcd(8, 9, 10, 11, 12...