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  • Author Author: kartben
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Controlling Holiday Lights using MQTT and the Arduino Yún

kartben

To all the Element14 members interested in participating to the Internet of Holiday Lights roadtest, and more generally to anyone who'd like to play with the Arduino Yún for building Internet of Things applications, this video is for you!
It gives you a very brief introduction on how you can turn an RGB LED strip that you can get on Amazon or eBay for ~25USD, into a remotely controlled IoT device using MQTT, the Eclipse IoT free broker, and an Arduino Yún!

 

 

The MQTT library for the Arduino is from Eclipse Paho but includes a fix that is not yet merged, so in the meantime you should probably use the library available here.

The code for the Arduino and Web applications is on Github.

 

Please do not hesitate to comment if you have any questions or if you want to share the ideas you may have to improve this little experiment!

  • Ah, I see!

    The app is packaged with Bower so the javascript dependencies are not checked-in in the Git repository.

    So either you ask bower to fetch the dependencies (bower install), but maybe simpler if you're not familiar with Bower would be to check out the gh-pages branch of the repo which already has all the required files and that you can tweak without having to understand too much the Bower/Grunt black magic.

     

    HTH!

  • in reply to alexev

    Hi Alex -

    Serving the HTML/JS file from the Yun would kind of defeat the point of using MQTT in the first place, since you would only be able to access the web page from your local network (or would need to open a port on your Internet router...).

    The web "application" is fully static and is just a bunch of HTML and JS files you can host anywhere. In the video, the web page is served directly from GitHub Pages.

  • in reply to peteroakes

    Thanks for the answer, i even did a firmware update on the yun, i do have the latest IDE version aswell and played a bit with the bridge examples too. Still digging.

  • in reply to alexev

    The YUN can host web pages by simply putting them onto a SD card and inserting into the YUN

     

    Needs to be in a folder "arduino\www"

     

    then you should be able to browse to the page

     

    There are plenty of examples for "Bridge", the YUN interface mechanics between the Linux side and Arduino side

     

    You do need the latest Arduino IDE though, version 1.5.8

  • Hello! Excuse my noobish questions but after programming the yun, where would you host the web application and how would you execute it? i'm trying to reproduce your nice project to better learn the mechanism of yun but i always find difficulties with eclipse. I already have eclipse for js. Do i need anything else besides your links to the project files? Thank you.