DIY CD drive based on a computer CDROM

[emuman100]

Lupulroz,

I'm glad you are ok. When you are ready, I'd love to order.

Rotellian,

I plan on using the S/PDIF output on an NEC CDR-273 CD-ROM drive. It will be connected to a toslink transmitter and connected to a CS8420 on jwb's DAC. According to the CS8420 datasheet, high jitter wont bother it much. So do I have anything to worry about? Even if I use a clean power supply, is it really that bad?

 

[Rotellian]

Im sure it will sound good. (but just because its tolerant of high jitter doesnt mean that it sounds as good as with less jitter) Its just that jitter is one of the areas where improvements can be made to get truly high end sound. Good luck and enjoy the music 🙂

 

[pradit_p]

Proggress report

I try to finished this week.
This one is my prototype, and behind is incircuit programming board.

 

[pradit_p]

Status on LCD

LCD is 44780 Compatible.
On LCD show
Total Song
Track No.
Total Time
Elapse Time
Time of each Track

Features:
Pause on/off
Stop/Play
Eject
Skip next Song
Backward Previous Song
Auto Repeat
Can Choose Track No. by press No. on Remote Control

 

[pradit_p]

Finished PCB size 2 x 6 inch

I will try to finished remote code this week.

 

[Matttcattt]

wow, looks good 😀

any circuit diagrams/website?

 

[pradit_p]

Hello,
Thanks, This base on Mucop diagram design, but I swap some port and route my own pcb .🙂

 

[Matttcattt]

Hello,
Thanks, This base on Mucop diagram design, but I swap some port and route my own pcb .🙂

oh. have you finished/got it working yet? keep up posted. 😀

 

[loonatron]

Reguarding the posts on programming the PIC16F877A, It is compatible with the normal non-"A" chip, It is possible to program them with the simple DIY "JDM programmer" and the free IC-Prog software.

Hints here...

http://www.midibox.org/cgi-bin/yabb/YaBB.cgi?board=troubleshooting;action=display;num=1060700142

 

[Lupulroz]

CDROM control kit ready...
http://www.rockna-line.com/cdrom.htm

 

[Lupulroz]

Some pics...

 

[Lupulroz]

...

 

[Matttcattt]

looks good. 😀

does it use the PIC16F877?

including PSU for the CDROM... nice... 🙂

 

[davesaudio]

pradit_p

pradit_p
what was the bug in the mucop code?
did it work as it was?

Dave

 

[omar]

If the firmware of the kit is improved somedays after, is it upgradable by ourselves?🙂

 

[pradit_p]

Davesaudio

Hello Mr. Davesaudio
Rightnow I also finished my board , bug fix and remote command.
Now my board is in on one week test run.
For Mucop code is work fine in select push button code and open-close Tray, after that you need to code new one for play, skip, stop and pause command.

 

[Lupulroz]

The features of the board:
- IR sensor for a Philips cd remote control (I used the remote from the cd-pro kit) ;
- 5 buttons on board for basic functions;
- 4 modes time display (absolute/relative/ascendent/descendent)
- 2 modes search speed ;
- repeat 1/all ;
- direct track access ;
- standby mode ;
- random mode ;
- 2x16 dot matrix display interface
Tested and works perfectly with following units:
Plextor PX-54TA
Teac CD-552E
Teac CD-W540E
BTC BCD40SB
LG GCE8520E
Asus CDS520
😎

 

[pradit_p]

Finished

One Picture for Thousand word.
I use PIC16F877.

 

[Kari]

Lupulroz,
are you also locking the spindle speed to something like 1x? Dont really wanna have something rotating at 3600rpm and generating 100db of noice....

 

[Lupulroz]

The drive spins at normal playback speed. It depends on the unit how much noise comes out. There are units quiet as "normal" cd-mechanisms, other are a little more noisier, but the noise level is perfectly acceptable anyway.