hi, im a beginner on arduino programming and im trying to build an automated greenhouse, i use a keypad 4x4 to set temperature and other parameters and it is all reported on an lcd 16x2. i've created 4 pages where you can enter by press 'A','B','C','D' from the keypad, at the moment im trying to set the temperature so i press 'A' then in the top of lcd i see the current value of temperature and i will to set temperature by pressing '#'. my problem is to get decimal values from keypad and charge it to a variable witch i can use to lean the temperature.
i hope some one can help me here is my code