I am trying to design a system that could monitor the parameters such as temperature, humidity and so on.
For now i am programming the arduino to run on a pre-defined value such as (t>25) and some outputs are connected to it. When temp exceeds that value , the output unit starts.
But this is all pre-defined value , i am planning to modify this system to take input from a user such as (t>a), where a is the input variable from the user.
Anyone can help me out here if they know?