(:source lang=arduino tabwidth=4:) void setup() {

  // make pin 2 an input and turn on the 
  // pullup resistor so it goes high unless
  // connected to ground:
  pinMode(2, INPUT_PULLUP);
  Keyboard.begin();

}

void loop() {

  //if the button is pressed
  if(digitalRead(2)==LOW){
    //Send the message
    Keyboard.println("Hello!");
  }

} (:sourceend:)

int : number of bytes sent

Example

See Also

• Keyboard.begin()
• Keyboard.end()
• Keyboard.press()
• Keyboard.print()
• Keyboard.release()
• Keyboard.releaseAll()
• Keyboard.write()

Keyboard.println() must be called after initiating Keyboard.begin().

character : a char or int to be sent to the computer as a keystroke, followed by newline and carriage return.\\

Keyboard.print() must be called after initiating Keyboard.begin().

int : number of bytes sent
\\

Keyboard.println()
Keyboard.println(character)\\

//

Keyboard

Keyboard.println()

Description

Sends a keystroke to a connected computer, followed by a newline and carriage return.

WARNING: When you use the Keyboard.println() command, the Arduino takes over your keyboard! Make sure you have control before you use the command. A pushbutton to toggle the keyboard control state is effective.

Syntax

Keyboard.println() Keyboard.println(character) Keyboard.println(characters)

Parameters

character : a char or int to be sent to the computer as a keystroke, followed by newline and carriage return. characters : a string to be sent to the computer as a keystroke, followed by a newline and carriage return.

Returns

int : number of bytes sent