Uploaded byAntonio Mondragon
The up next
The document describes a device called the upNext, which allows party guests to choose and vote on music played through a stereo system by uploading songs from their smartphones and other devices to a Raspberry Pi-based prototype. The target audience is college students who host parties but can't agree on music selection. Users transfer music files without wires via a WiFi network, and songs with the most votes move to the top of the queue. Development challenges included issues with an intended MP3 decoder chip.
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The up next
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- 2. Product Vision The upNextremoves the need for a DJ at a party, as everyone present can choose the music. This device allows everyone nearby to add music, vote on music that has been uploaded, and enjoy the music. Songs with the most votes move to the top of the queue.
- 3. Target Audience Our targetaudience for the upNext is the college crowd. They like to host a lot of parties but can never seem to agree on what music should be played. Also they are most likely to adopt new technology.
- 4. General Description The upNextis a small box that interfaces with most stereo systems. It accepts music wirelessly from smart phones, tablets, laptops, and other devices with internet access. https://www.youtube.com/watch?v=dtgAA0SSXqY
- 5. Detailed Description RaspberryPi Web server NoJS USB sound card RCA outputs
- 6. Differentiation Our product isoriginal in that it takes music directly from the users. The transfer is done over a WiFi network, so no wires are needed. The voting system also gives the device a unique advantage.
- 7. Retrospective We envisioned aprototype product that included a Raspberry Pi, a Sparkfun MP3 decoder chip, both inside a sleek case. What we have is a prototype product that includes a Raspberry Pi, a USB sound card, inside a sleek case.
- 8. Project Management Methodologies We tookthe time to set up a timeline for each step of the prototyping process.
- 9. Roadblocks The original designcalled for a Sparkfun MP3 decoder. After working with the chip for 7 weeks it was found that it comes defective from the factory, and needs to be modified in order to run properly. Even after modification, the logic analyzer showed exactly what the timing diagram of the datasheet showed, yet no music played.
- 10. Thoughts The project wasfun as soon as it started working. Until then it was very stressful. The Raspberry Pi is supposed to be an easy platform to use, but there seems to be a lack of libraries for reading/writing to the GPIO pins.
- 11. Advice for Others Thebest advice I can give incoming ESD III students is if something isn’t working after several weeks, just give up on it and try another approach.
- 12. If we hadto do it again… If I had to do this again, I would choose embedded systems with more documentation. The Raspberry Pi has a lot of documentation, just not for the functions that we needed. As for the MP3 decoding chip, the documentation was poor.
- 13. Pick Up WhereWe Left Off… If someone were to pick up where we left off, they could port the system to a cheaper embedded system, or port it to a smaller one. Also they could come up with a case design that is easy to mass produce.