- Welcome to the STEREO MP3 Project -
Please set resolution of your video at 800x600
minimun and MEDIUM CHARACTER!
This Page contains instructions &
software for create a Stereo Hi-Fi Mp3 BASED ON A PERSONAL
COMPUTER. The software is all free, except for the 128x64
Dot Matrix display (not ready). The Stereo that I have made supports 2
LCD 20x4, an I/O
interface for drive 2 electric motors and a small keyboard for input. The project is based on
the very powerfull 'MPXPLAY'
(You need MPXPLAY 1.42 !) software for play MP3 files. If you have any question please write.
Here you can see a picture preview, if you
want see all of it go to the Picture
The hardware that I have used is listed below, but you can try also other types of cpu (less
powerfull) because the MPXPLAY software don't need very much system resources.
Gb + 4.1
with Backlight of Xiamen Corporation (LPT1)
Keyboard (see pictures)
simple circuits for Vu-Meter
Input/Output Interface for Led & Motors
Electric 12 Volts Motor
: 6 Volts & 12 Volts
The software that I have Made drive 2 LCD at the same time using only one Parallel Port. The
second Parallel Port is for the Motors & Leds.
runs under Dos, so if you want use it you must install a Dos version on your PC because
is not compatible with Windows 95/98.
My program is a TSR (terminate/stay resident) that read information on video memory and report
it to you.
The FIRST LCD (how you can see on the Pictures) displays these information :
1 line display Song
Name, Author, Album name & Year
lines are for Spectrum
Last line display
the time of song, the number, and the total time.
The SECOND LCD displays these other
1 line display
Vu-Meter & Surrond, treble, Bass when it change
line are for position in song
1 line are for
1 line are for Speed
The part of software that control I/O
1 Red Led for Pause
1 Green Led for Replay
1 Blu Led for Random
1 Red Led for Autovolume
can download all software for this project in the bottom of this page or go to the Main Download
You can see the
for all of this.
When you use arrow button for search for a song, the second line on first LCD write the name of
the song that is highlighted on MPXPLAY.
The particularity of this Stereo is the
electric motors that put-out a "Drawer" that
contain the CD-Covers (for a quick search), and the second LCD display. All is controlled by the
Here is a list of what's to do :
- Support for Cross Fade (key & led)
- Support for a 128x64
- Support for a Infra Red
Two words on the I/O Interface & motors :
You can find the project of the I/O on the Useful
Circuits Section. The problem that I have found is on
the RELAYS for drive motors : I have only 6 Volt RELAYS so I can't use the 5 Volt of the main PC
Adaptor. The only solution was to buy a 6 Volts adaptor (remember that is NOT the right way to
do it, because the parallel port of PC is able to manage 5 volts so I don't know if it will
broke on the future) and another 12 Volts adaptor for the motors. The result is that my MP3
Stereo need 4 connection to the electric socket.
have take the motors for the drawer & 2° LCD on a 2 old CD-ROM, it's really simple use it
because they are ready with motors and with sensor for the OPEN/CLOSE position.(sorry for my
really bad english, I hope you will understand).
is the connection for the LCD Displays :
Remember This :
The PIN "E" (number 6 of display 1) must be connected to the PIN number 16 of Parallel
- The PIN "E" (number 6 of display 2 ) must be connected to the PIN number 1 of