spark-io.md

Led Blink on Spark Core

Example using Johnny-Five + Spark-io to control a Spark Core device wirelessly.

LED on pin D1

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

 

Run this example from the command line with:

node eg/spark-io.js

var five = require("johnny-five");
var Spark = require("spark-io");
var board;

// Create Johnny-Five board connected via Spark.
// Assumes access tokens are stored as environment variables
// but you can enter them directly below instead.
board = new five.Board({
  io: new Spark({
    token: process.env.SPARK_TOKEN,
    deviceId: process.env.SPARK_DEVICE_ID
  })
});

board.on("ready", function() {
  console.log("CONNECTED");

  // Once connected, we can do normal Johnny-Five stuff
  var led = new five.Led("D1");
  led.blink();

});

Illustrations / Photos

Spark Core Wifi Device

Additional Notes

In order to use the spark-io library, you will need to load the special voodoospark firmware onto your device. We recommend you review VoodooSpark's Getting Started before continuing. We also recommend storing your Spark token and device ID in a dot file so they can be accessed as properties of process.env. Create a file in your home directory called .sparkrc that contains:

export SPARK_TOKEN="your spark token"
export SPARK_DEVICE_ID="your device id"

Then add the following to your dot-rc file of choice:

source ~/.sparkrc

Ensure your host computer (where you're running your Node application) and the Spark are on the same local network.

Learn More

• spark-io on GitHub

 

License

Copyright (c) 2012-2014 Rick Waldron [email protected] Licensed under the MIT license. Copyright (c) 2015-2023 The Johnny-Five Contributors Licensed under the MIT license.