How do I add additional sensors?

Projects Programming
9

tobba__1990:
I do not really understand? where can I read about how Serial println works how is it up to the computer how do I know which sensor it comes from?

By reading a sensor then printing the value that it returns, preferably with a text label indicating what the value means.

Serial.print("Value from A0 : ";
Serial.println(analogRead(A0));