when i use the command analogRead("X")
The problem is that i am not putting voltage y the arduino board, there is nothing connected
QuoteThe problem is that i am not putting voltage y the arduino board, there is nothing connectedSo the input is what is known as floating and it is picking up interference. It happens to all unconnected inputs in digital electronics, it is no problem and no magic.
it returns a response bits that should not exist because I'm not giving voltage.
how to remove that interference in arduino analog pins?
i really sorry for my ignorance. if i short them to ground, how i connect the analog input of voltage?and thank you very much for your help and patience