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| − | Quite a few people have released the schematics and source code for their music player.
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| − | Such open-source music players include:
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| − | == at Open Circuits ==
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| − | * [[TRAXMOD]] Digital Audio Player
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| − | == elsewhere ==
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| − | ''Some of these web sites are very difficult to post comments to. I suppose posting comments about these music players here -- at Open Circuits -- is the next best thing.''
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| − | <div style="float:left" >
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| − | http://www.makezine.com/blog/package.jpg
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| − | </div>
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| − | == MP3 players by Raphael Abrams ==
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| − | [http://walrus.com/~raphael/html/eejump.html MP3 players by Raphael Abrams] has designed and released the designs and has [http://www.teuthis.com/html/kits.html kits for 3 MP3 players]:
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| − | * MAKE: Daisy MMC/SD Mp3 Player
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| − | * The “Sakura” MMC Mp3 Player
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| − | * The Super Simple (Compact Flash Card) Mp3 Player
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| − |
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| − | === Daisy MP3 player ===
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| − | Daisy MP3 Player Kit: Open Source MP3 Player Kit
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| − | http://makezine.com/daisy/
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| − | http://www.teuthis.com/html/daisy_mp3.html
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| − | ''(photo from [http://www.makezine.com/blog/archive/2007/01/make_daisy_mp3_1.html Make Zine blog ])''
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| − | uses:
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| − | * Microchip PIC18F45j10
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| − | * VS1011 from VLSI, Finland. It is an .mp3 and .wav decoder chip, a DAC, and a headphone amplifier all in one 28 pin package.
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| − |
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| − | === "The Super-Simple pocket size mp3 player" ===
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| − | "simplest possible MP3 setup"
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| − | by Raphael Abrams.
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| − | Completely open source.
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| − | http://teuthis.com/html/mp3.html
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| − | Based on the PIC 16LF877,
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| − | uses the vs1001k decoder chip
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| − | uses compact flash cards
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| − | (with standard MP3 files in standard FAT32 format)
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| − | "around $100 in parts for a 128MB setup ... no display"
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| − | 2 versions of the source code, one in assembly, one in C.
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| − |
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| − | === The Sakura, the World’s Simplest Open Source DIY MP3 player ===
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| − | The Sakura, the World’s Simplest Open Source DIY MP3 player.
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| − | by Raphael Abrams.
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| − | All the source and schematics are here for free as part of the Creative Commons.
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| − | http://www.teuthis.com/html/mmc_mp3.html
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| − | "around $30 in parts and a good amount of patience (not including the MMC card)"
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| − | FAT32 support
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| − | WAV files are also supported
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| − | Based on the PIC 16LF88
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| − | uses the VS1011 decoder chip.
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| − | Source code is in C.
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| − |
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| − | === Juicebox ===
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| − | "Juicebox is a design (code and hardware) for a small ATMEGA128 system which can be used for mp3 playback and general tasks. It includes MMC card (multimedia card) and FAT filesystem support and is written for GNU tools."
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| − | Uses VS1001 MP3 Decoder.
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| − | Supports 4x12 cell phone LCD or a small E Ink panel.
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| − | "a pocket size MP3 player, a bit smaller than a business card in footprint, and about 9mm thick."
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| − | by Holly Gates, Becky Moran, Brian Hone.
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| − |
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| − | * http://positron.org/projects/juicebox/
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| − | * http://sourceforge.net/projects/juicebox/
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| − |
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| − | === PIC audio player ===
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| − | People at the Microchip PIC forum are batting around ideas:
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| − | [http://forum.microchip.com/tm.aspx?m=166133 dsPic audio player],
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| − | [http://forum.microchip.com/tm.aspx?m=166337 data compression techniques],
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| − | [http://forum.microchip.com/tm.aspx?m=162048 saving an audio file to a memory].
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| − | ===MintyMP3===
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| − | MP3 player in an Altoids can.
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| − | includes FM transmitter.
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| − | Uses compact flash card (reads FAT16), PIC18F452, STA013 mp3 decoder chip, FT232 USB chip.
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| − | "compact flash card. ... Cheaper & faster than multimedia cards (MMC) and can be accessed via a PCMCIA slot, as all PC laptops have, using a $5 adaptor (although you can read/write using the Java program MintyComm program talking through the serial port)"
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| − | http://ladyada.net/make/minty/
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| − | (There's a nice forum at ''[FIXME: LINK]'' for discussing this).
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| − |
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| − | ==="MP3 Player"===
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| − | http://www.microsyl.com/mp3/mp3.html
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| − | based on Atmel AVR
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| − | ... The MP3 decoder is a VS1001k ...
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| − | The USB interface is done via FT232MB ...
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| − | ... standard hard drive with MP3s stored in FAT
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| − | ...
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| − | includes Infrared bi-directional interface
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| − | ...
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| − | includes source code in C.
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| − | ===Yet Another Mobile MP3 Player===
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| − | http://www.bobblick.com/techref/projects/yammp3/yammp3.html
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| − | "basically a personal computer that runs in a car"
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| − | (runs Linux)
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| − | ===BookPC Car MP3 Player===
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| − | http://www.bobblick.com/techref/projects/mp3book/mp3book.html
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| − | "a computer I built for my car"
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| − | (runs Linux)
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| − |
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| − | === MP3Car ===
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| − | "MP3Car.Com - Home of the Car Computer Forums - Build your own Carputer"
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| − | http://mp3car.com/
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| − |
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| − | === MP3 Player ===
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| − | http://www.codepuppies.com/~ben/sens/pic/mp3/
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| − | (open-source hardware and software)
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| − | "the MAS3507D chip, from Micronas Intermetall, ... You simply clock a serial MP3 bitstream in one side, and digital audio gets clocked out of the other side."
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| − | So, we have
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| − | * Microchip PIC in the middle
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| − | * IDE interface (supports *both* hard drive *and* CD drive)
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| − | * MAS3507D chip ... to analog amplifiers ... out to headphone jack
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| − | * IR remote control.
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| − | * parallel port ... to PC, for downloading MP3s.
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| − | Stores the MP3s on the hard drive in a funky (but well documented) proprietary format,
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| − | to simplify the PIC playback code.
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| − |
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| − | === butterfly MP3 ===
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| − | An open design for a portable MP3 player.
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| − | It is designed to be easy / possible to make for a beginner and cheap as well.
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| − | An AVR Butterfly is used to simplify construction and minimise component count. The decoding is handled by a VS1001 decoder/DAC/amplifier.
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| − | The design supports the original Butterfly LCD as well as NOKIA 3310 cell phone displays. The project includes PCBs in eagle format for the player and also
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| − | an adapter board to replace the original LCD of the Butterfly with a BW Nokia 3310 or Color Nokia 6100 display.
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| − | The player uses MMC cards with a standard FAT16 file system.
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| − | http://butterflymp3.sourceforge.net/rev05Nokia02_TN.jpg
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| − | http://butterflymp3.sourceforge.net/
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| − |
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| − | ===yampp: Yet another MP-3 Player===
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| − | http://myplace.nu/mp3/
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| − |
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| − | === yampp Industrial III ===
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| − | The "SPE020 MP3 Player"
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| − | http://rev-ed.co.uk/picaxe/software.htm
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| − | , when you look at the .pdf, says in big letters
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| − | "yampp Industrial III
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| − | http://www.yampp.com/ "
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| − | and in smaller, hard-to-read letters, something like "Jesper Hansen -- 2003" (?).
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| − |
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| − |
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| − | === CarPuter ===
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| − | [http://www.nslu2-linux.org/wiki/HowTo/CarPuter NSLU2-based CarPuter]
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| − | seems to use less power than other Linux-based MP3 players. (?)
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| − |
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| − | == iPod ? ==
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| − | "Open Source Hardware"
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| − | http://www.nivi.com/blog/article/open-source-hardware
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| − | "The Bill of Materials for the 30 GB Video iPod from Jefferies &
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| − | Company's Video iPod Teardown is fascinating."
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| − | http://www.tuaw.com/2005/10/19/stock-brokers-crack-open-an-ipod-5g-so-you-dont-have-to/
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| − | == discussion ==
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| − | Rather than commercially selling yet another MP3 player,
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| − | I am
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| − | more interested in commercially selling something that has almost
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| − | identical hardware, but does something that none of these do.
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| − | --[[User:DavidCary|DavidCary]] 15:28, 25 April 2006 (PDT)
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| − | ----
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| − | The article
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| − | [http://www.wired.com/news/technology/0,1282,64963,00.html "High-Tech Hearing Bypasses Ears"]
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| − | by Laila Weir begins: "A wristwatch phone that lets you listen by sticking a finger in your ear, an MP3 player that vibrates the bones in your skull to play music that only you can hear ..."
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| − | So how does this "bone-conduction technology" work?
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| − | That article also mentions that "student ... Sam James created Soundwaves -- an underwater MP3 player".
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| − |
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| − | -----
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| − |
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| − | [http://xess.com/faq/M0000141.HTM MP3 decoding on a FPGA ?]
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| − |
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| − | -----
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