Wiki > Main > LyreProject (compare)
Difference: LyreProject (r92 vs. r91)
Project to design and build a Free/Open hardware audio player (DAP) and recorder, for use with RockBox.
The main project page is now on:
This page is here as an archive.
Major companies that build DAPs like Apple or Sandisk, often create new versions of hardware to get lower prices and add new functionality. Since the new versions are usually designed with different chips, are often undocumented and locked, Rockbox developers have to struggle to find information that permits them understand how the devices work, and allow the Rockbox firmware to run on them. Sometimes, before the developers can hack some older target versions, a new version appears and the older version is not available on the market anymore!
Also the same companies make DAPs with lower quality components so they can get lower prices and earn more. Lower quality components usually means an audio signal that is noisy or a DAP with a shorter life span.
Modern micro-controllers and memory have become very cheap, and tend to be very fast with a lot of resources inside like DAC and USB peripherals. This means that it is possible to build a reasonably priced and powered DAP with a fewer components. If we manufacture our DAP, we will be able to maintain a much more stable and documented hardware, with a good quality audio and a perfect Rockbox port.
All documentation to produce the LyreProject is under license:
If you use this work, you must reference this project as "Rockbox Player" and use this link: http://www.rockbox.org/twiki/bin/view/Main/LyreProject
We are working closely with ARMopendous project, which is a Open Hardware ARM9 development board. The person behind that project already sent the board for production and designed an expansion board for a DAP, with buttons, audio DAC IC and LCD. If all goes well, in the end a hardware he will design a "short" version of all this hardware for being a DAP and a plastic case.
ARMopendous is a complete service, he design the board with a Free Software CAD, send it for production, buy the components and assembly them on the board at his home, verify and test it, finally sells it on Ebay shop. It's a bit DIY, and it's all Open Hardware (all source files for board available with many good information and tips).
Final hardware should be available at mid June. Base board (which will also run GNU Linux) should cost about $50 and the base board + the DAP expansion board should cost about $100.
If you would like to follow the development and buy the hardware (when available), please visit us at: http://code.google.com/p/armopendous/
Our actual working prototype is LyreLittlePrototype and we now have a working Rockbox bootloader. We believe that 90% of the total project is done.
Here is one video: http://blip.tv/file/get/Jpcasainho-LyreProjectActualWorkingState511.ogg
If needed, contact companies asking for support at assembly and selling the player on theirs online shops - example:
Please add yourself to this list.
r92 - 21 Sep 2009 - 11:44:24 - JorgePintoRevision r92 - 21 Sep 2009 - 11:44 - JorgePinto
Revision r91 - 23 May 2009 - 09:53 - JorgePinto
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