Description

Sends one or more keystrokes to a connected computer, followed by a keystroke on the Enter key.

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

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 Enter.
• characters: a string to be sent to the computer as keystrokes, followed by Enter.

Returns

Number of keystrokes sent. Data type: size_t.

Example Code

    #include <Keyboard.h>

    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!");
      }
    }

Notes and Warnings

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