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Side Projects Related to the MP3 Player
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This page attempts to provide information about many "side projects"
related to the MP3 player project. Most of these are undertaken by
individuals independent of PJRC. We hope this page helps you to find
their project and perhaps build it yourself, or contribute or colloraberate
on improving it.
In most cases, we have tried to provide links to websites, or pages
hosted here at PJRC when no website is available. Also, when it is ok
with the author, we provide you with email contact info.
This is a very new page and a lot of information is
still missing.
If you are working on a side project not listed here, or know of one,
please contact paul@pjrc.com to have it listed. You do not need to have
a website, but we appreciate when you can provide an email address
for people who are interested in your project to contact you.
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Cheuk Poon's USB Interface provides a way to
connect a USB hard drive adaptor board. Only one of the boards accesses the hard
drive at one time, so when you plug it into your PC, the PC "sees" only the hard
drive, so you can easily copy files onto it. Then, when you unplug from the
computer it acts as the mp3 player again.
You can contact Cheuk at: 
Several people have talked about making some nice cases in small production
and offering them for sale to others.
Please contact me if you are doing this. This will likely become its own
web page with lots of photos.
VW / Panasonic: Ed Schlunder has
developed an interface to the VW based decks
You can contact Ed at: 
BMW (I-Bus): Franck Touanen has developped a special that allows
the mp3 player to integrate with the BMW I-Bus. The objective was not
only to be able to control the
player, but also to send PJRC player + MP3 infos to the BMW
integrated display without using any external LCD screen. For more
information, visit the
Hack The I-Bus Yahoo Group
(may require free yahoo login).
Also, generic information about I-Bus is available at
OpenBMW.org.
You can contact Franck at: 
CDROM: Marco Bakker did quite a lot of coding some time ago, to add ATAPI
protocol support to the firmware. His code can access a CDROM, but it requires
quite a bit of work to be able to integrate into the device drivers in the main
firmware. Here is a message from Marco and his modified code.
TODO: link to the firmware the Marco wrote...
Derek Joos and other students also made an attempt
at ATAPI/CDROM support, and their work is archived it the photo gallery section.
Compact Flash: It is believed that compact flash might work with an IDE
adaptor, such as PC Engines CFDISK.2D.
However, FAT32 formatting is needed by the firmware, and virtually all CF cards are formatted
with FAT16. TODO: rough ideas for formatting small cards as FAT32. The 0.6.x firmware
requires IDE "multiple-mode" transfers of 8 sectors, which are supported by all modern
hard drives, but might not be possible in compact flash that lacks buffering.
Also, hot-swap does not work with CF's True-IDE mode.
PocketPC: Matthew Williams (a.k.a. Ophbalance) is working on a
nice PocketPC interface application,
which has a new site with updated info.
You can contact Matt at: 
Palm Pilot:Dean Woodyatt connected the player to a Palm,
and used a Palm-based terminal emulator to view the serial port messages.
From: "Tom Parker"
Date: Thu Apr 10, 2003 2:39 am
Subject: 89C2051 based IR remote control updated
I've updated my remote control project to output \n after each command
for the new parser. As Paul mentioned previously the parser input
format has been changed.
You can find all the details at
http://www.wiresncode.com/projects/pjrcmp3/remote/
Currently it supports only the Packard Bell IR Remote control ($US12
from http://sun818.home.mindspring.com/html/order.htm).
Todd Elliot's original IR controller
These are PC software applications that communicate with the mp3 player and
emulate the 24x8 LCD on-screen.
b_ko_69 at yahoo dot com
http://groups.yahoo.com/group/pjrcmp3/files/VirtualDisplay_10.zip
http://groups.yahoo.com/group/pjrcmp3/files/VirtualDisplay_src.zip
mwilliams at extol dot com
http://groups.yahoo.com/group/pjrcmp3/files/vbterm-prototype.zip
Keith ???
http://www.unf.edu/~kschin
colonwq at yahoo dot com
Dean Woodyatt's original backlight
Techknowman's Backlight, now
also sold
ready to use by PJRC.
TODO: info and links about Techknowman's other stuff
Maybe copy the messages from the developer group to a page about the ethernet.
Find Tom's image of the circuit board layout.
Tom's website.
TODO, make a page here with more explaination about this, about how the FPGA
works, and an archive of the VHDL code.
http://roger.trideja.com/mp3.html
todo: anti-spam for Roger's email address
??? Where does this fit in ???
http://mp3tsi.cjb.net/
bmatthiasp at yahoo dot com
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