Build a Real-time Location Tracker Using Wia


Demo: https://wiaio.github.io/wia-location-tracker-example-web/

Project Requirements

tmp_image_0

Setting up the Wia Node.js SDK

  • First thing you will want to do is to create a folder on your location device. Let’s call it wia-location-device.
  • Go into the folder and initialize the project by creating a package.json file using the command “npm init” (use defaults for everything).
  • Install the Wia SDK using the command “npm install --save wia“.
  • Your package.json file should look something like the code below.
{
    "name": "wia-location-device",
    "version": "1.0.0",
    "description": "",
    "main": "index.js",
    "scripts": {
        "test": "echo \"Error: no test specified\" && exit 1"
    },
    "author": "Your Name Here",
    "license": "ISC",
    "dependencies": {
        "wia": "^1.3.3"
    }
}

Creating your Location Tracking Device

  • From here, click on the + symbol and the Add New Device modal will appear.
  • Enter ‘Location Device’ as the name and click Add Device.
  • Take a note of the device’s secret key, we’ll need this later.

Write code for the location tracking device

  • We need to create a file for our program, let’s call it index.js
  • Copy the code from the example below add to the index.js file.
  • Replace the device-secret-key on line 3 with your device’s secret key that you made a note of earlier.
  • Now to test that you have done your setup correctly, simply run node index.js
  • Your device should have updated in the dashboard under the Location tab, with your sensor readings. You can also view in in real-time in the Debugger tab.
'use strict'
var wia = require('wia')('Your secret key'); 
// collection of cities
var cities = [{"city":"Dublin","lat":"53.349805","lng":"-6.260310"}, 
             {"city":"London","lat":"51.5013673","lng":"-0.1440787"}, 
             {"city":"Paris","lat":"48.8922431","lng":"2.2380753"}, 
             {"city":"Toronto","lat":"43.6426731","lng":"-79.3928402"}]; 
// Using the MQTT stream
wia.stream.on('connect', function() { 
 console.log('Stream connected!'); 
 // randomly choosing city location to publish
 var random = Math.floor(Math.random() * 4); 
 var randomcity = cities[random]; 
 // setting the interval at which to publish location i.e. every second
 setInterval(function() { 
   // function to publish location data 
   wia.locations.publish( 
       { 
         "latitude": randomcity.lat, 
         "longitude": randomcity.lng, 
         "altitude": 2 

Read More:  Build a Real-time Location Tracker Using Wia




© 2015 Powered By Engineering Projects Team, Raspberry Pi Projects

Scroll to top