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Board - Specify port

LED on pin 13 (Arduino UNO)

LED inserted directly into pin 13


Fritzing diagram: docs/breadboard/led-13.fzz


Run this example from the command line with:

node eg/board-with-port.js
const { Board } = require("johnny-five");

// Johnny-Five will try its hardest to detect the port for you,
// however you may also explicitly specify the port by passing
// it as an optional property to the Board constructor:
const board = new Board({
  port: "/dev/cu.usbmodem1411"

// The board's pins will not be accessible until
// the board has reported that it is ready
board.on("ready", () => {
  board.pinMode(13, board.MODES.OUTPUT);

  board.loop(500, () => {
    // Whatever the last value was, write the opposite
    board.digitalWrite(13, board.pins[13].value ? 0 : 1);



Copyright (c) 2012-2014 Rick Waldron Licensed under the MIT license. Copyright (c) 2015-2019 The Johnny-Five Contributors Licensed under the MIT license.

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