ECE434 Spotify Box

Embedded Linux Class by Mark A. Yoder

Team members: Aman Bajaj and Eric Kirby

Grading Template

I'm using the following template to grade. Each slot is 10 points. 0 = Missing, 5=OK, 10=Wow!

09 Executive Summary
09 Packaging
09 Installation Instructions 
09 User Instructions
09 Highlights
09 Theory of Operation
09 Work Breakdown
09 Future Work/Conclusions
09 Hackster.io
09 Demo/Poster
00 Late
Comments: Have a good day.

Score:  90/100

(Inline Comment)

Executive Summary

This project is making a device using the Beaglebone which can stream music through spotify. The final result displays a mopidy interface on an LCD screen that can be controlled using buttons as GPIO into the Beaglebone. This is done using Mopidy, specifically the Mopidy-spotify, Mopidy-touchscreen and Mopidy-GPIO extensions. In order to adapt the existing code to our project, we created our own mopidy extension and tailored the code so that it works the way we want it to. The output audio is controlled using PulseAudio and comes out from the USB port through a USB-AUX adapter.

Timeline

• 10/29 - Order Parts
• 11/3 - Receive Parts
• 11/5 - Install necessary packages on Bone
• 11/6 - Play music from Spotify
• 11/9 - Display Pygame on the LCD
• 11/13 - Create an interface for the LCD
• 11/18 - Finish documentation

Packaging

Packaging not really possible as wifi dongle didn't work with spotify

Spotify Box Fritzing Design

Installation Instructions

Give step by step instructions on how to install your project.

https://github.com/kirbyes/ECE434/tree/master/final-project

• Include your github path as a link like this to the read-only git site: https://github.com/MarkAYoder/gitLearn.
• Be sure your README.md is includes an up-to-date and clear description of your project so that someone who comes across you git repository can quickly learn what you did and how they can reproduce it.
• Include a Makefile for your code if using C.
• Include any additional packages installed via apt. Include install.sh and setup.sh files.
• Include kernel mods.
• If there is extra hardware needed, include links to where it can be obtained.

User Instructions

First, make sure that a speaker or headphones are plugged in to the aux port of the USB-AUX adapter. Plug in the beaglebone, upon startup it should run the program. Use the buttons to navigate around the touch screen (up, left, down, right and enter are the buttons). Once you find the song that you want, you can play it and it should come out of the speaker/headphones!

Highlights

Here is where you brag about what your project can do.

Include a YouTube demo the audio description.

Theory of Operation

The user interacts with the LCD touchscreen, which uses the Mopidy-Touchscreen extension that has already been written. When the user selects a song, a request is sent to spotify using the Mopidy-Spotify extension. Once the data returns, the song begins to play, and the audio output is handled using the PulseAudio package.

Pipeline

Work Breakdown

List the major tasks in your project and who did what.

Also list here what doesn't work yet and when you think it will be finished and who is finishing it.

Future Work

One really cool thing that could be done is adding a voice recognition component to the project so that it works similar to Alexa where a user can speak to it and request a song. This could be done using the Mopidy-Headless extension and adapting it with open source voice recognition.

Conclusions

A lot of this project was adapting previous work that had been done, which made it rather smooth. It would have been interesting to create our own user interface, but we didn't really see the point in doing so as it is much easier to adapt work that has been done (yay open source!). As mentioned in the future work section, it would be really cool to adapt the project to use voice recognition, and even cooler if we could get it to work with playlists (a feature that Mopidy doesn't support).

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Embedded Linux Class by Mark A. Yoder