Smartwatch Game Controller

Introduction

I've always wanted to experiment with using smartwatches as game controllers. They come with everything necessary: buttons, gyroscopes, accelerometers, sometimes even touchscreens.

This particular project was made during a Hackster Live meetup in Livingston, NJ and the goal was to convert a Pebble into a game controller. 

There are three parts to this:

Pebble - runs a javascript app and uses ajax to post data to a local IP

Node.js - runs an application with express and listens for data receive

Unity3D - runs a simple script to just fetch data from node.js

I haven't supplied the Node.js and Unity3D scripts because those would have to be tailored for your specific game. In node.js, include express and the following:

var x = 0;
var y = 0;
var z = 0;
//add variables here that can be logged
app.get('/log', function(req,res) {
x=req.query.x; y=req.query.y; z=req.query.z;
res.send("Success");
}); //your request must be in format lcoalhost:port/log?x=X_VALUE&y=Y_VALUE&z=Z_VALUE
app.get('/update', function(req,res){
res.send("x="+x+" y="+y+" z="+z); //add variables here
});

That is a skeleton of logging and updating data.

Using the WWW class (http://docs.unity3d.com/ScriptReference/WWW.html) in Unity3D, you can get data by navigating to the page and updating in that manner. Attach it to a controller and run.

(Cover Pic: this is the difference between the current accelerometer reading and the Unity app. The two most pronounced zig-zag lines are the difference in the reading, blue is the first 5 seconds and white is the next 5 seconds. The red line represents the lag in milliseconds.)