arduino Digital Inputs
Syntax
pinMode(pin, pinMode)// Sets the pin to the mode defined.digitalRead(pin);// Reads the value from a specified digital pin,
Parameters
| Paramter | Details |
|---|---|
| pinmode | Should be set to INPUT or INPUT_PULLUP |
Remarks
If the input pin is not pulled LOW or HIGH, the value will float. That is, it won't be clearly a 1 or a 0, but somewhere in between. For digital input, a pullup or pulldown resistor is a necessity.
