Hello, Puck demonstrates many of the built-in features of Puck.js. Like Arduino, you can use Puck.js to build IoT devices. While you code Arduino in C++, Puck.js runs JavaScript. Like the Amazon Dash, you can program behaviors accessible with a single button click.

• Web Bluetooth IDE and console
• Button
• RGB LEDs
• Temperature sensor
• Battery sensor
• Magnetometer:
  • movement
  • orientation
  • magnetism
• Nearby BLE devices
• Light sensor
• NFC URL broadcasting and field detection

30-second video demo on Youtube

There are a bunch of convenience objects and functions in here for simplifying using sensors and LEDs.

You can create two actions that happen on button press like this:

var toggleButton = new ToggleButton(startAction, stopAction);

You can do a 20-second fade through the colors of the rainbow with:

var animation = new Animation();
animation.startRainbow();

You can list nearby Pucks like this:

var pucks = new NearbyPucks();
pucks.find(foundCallback);

var foundCallback = function(names){
	// do something with found Pucks
};

There's a lot more; will flesh this out later.