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 Posted: Fri, 20th Jan 2006 14:17 Post subject: Build your own Audio-CD player using PC-CD-Rom drive? |
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Hi guys...
I'm kinda bored and I decided it'd be nice to build my own AudioCD-player. I read somewhere a long time ago that you can use any CD-rom drive and mod it so its just a normal Audio-CD player. Then you could add buttons to play, stop and switch songs, add a cable to feed it with electricity and finally connect it to some loudspeakers and there you got your self-made audio-CD player. Sounds nice, But I have no idea how to do it. Can anyone help me out a bit?
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ollax
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Location: Here today, Hell tomorrow!
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| Posted: Fri, 20th Jan 2006 14:45 Post subject: Re: Build your own Audio-CD player using PC-CD-Rom drive? |
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| saddamhussein wrote: | Hi guys...
I'm kinda bored and I decided it'd be nice to build my own AudioCD-player. I read somewhere a long time ago that you can use any CD-rom drive and mod it so its just a normal Audio-CD player. Then you could add buttons to play, stop and switch songs, add a cable to feed it with electricity and finally connect it to some loudspeakers and there you got your self-made audio-CD player. Sounds nice, But I have no idea how to do it. Can anyone help me out a bit? |
I doubt it will work since theres no amplifier in a cd-rom!
Of all the things i've lost, i miss my mind the most!
"Ozzy Osbourne"
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| Posted: Fri, 20th Jan 2006 15:22 Post subject: |
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Theres a headphones out... you could put the siganl through headphones output into an amp and then to the speakers...
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SuTuRa
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Location: NFOHump
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| Posted: Thu, 26th Jan 2006 05:27 Post subject: |
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Jenni
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Location: England.
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| Posted: Thu, 26th Jan 2006 05:38 Post subject: |
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I would have thought it was possible. However you would need some sort of computer to decode the wav files. Remember it's not music on a cd/dvd but data.
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SuTuRa
Posts: 2445
Location: NFOHump
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| Posted: Thu, 26th Jan 2006 06:04 Post subject: |
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| Jenni wrote: | | I would have thought it was possible. However you would need some sort of computer to decode the wav files. Remember it's not music on a cd/dvd but data. |
I think you´re a little confused... He just wants to play normal audio cd´s in the cd-rom. So no need for decoding cuz it´s normal .cda files.
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| Posted: Thu, 26th Jan 2006 13:29 Post subject: |
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Yup... just normal cd audio files.
Problem is, My cd player has an eject and a skip button, but no play, stop and skip backward. I once read that ervery cd player has these functions, but not all of them were finally wired to buttons... So if I open the player I should find some sort of contacts for these commands?!
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Jenni
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Location: England.
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| Posted: Thu, 26th Jan 2006 14:28 Post subject: |
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| SuTuRa wrote: |
I think you´re a little confused... He just wants to play normal audio cd´s in the cd-rom. So no need for decoding cuz it´s normal .cda files. |
But a cda file still needs to be decoded as it's data. I'm not sure that the cdrom decodes it or if it routes it to the cpu/memory for decoding. The only real way of finding out is to wire it upto a psu and no ribbon cable and plugging in a small 3.5 jack.
Hard to say saddam. My dvd writer I have here only has an eject. |
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Bigperm
Posts: 1908
Location: Alberta,Canada
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| Posted: Thu, 26th Jan 2006 17:05 Post subject: |
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| Jenni wrote: | | SuTuRa wrote: |
I think you´re a little confused... He just wants to play normal audio cd´s in the cd-rom. So no need for decoding cuz it´s normal .cda files. |
But a cda file still needs to be decoded as it's data. I'm not sure that the cdrom decodes it or if it routes it to the cpu/memory for decoding. The only real way of finding out is to wire it upto a psu and no ribbon cable and plugging in a small 3.5 jack.
Hard to say saddam. My dvd writer I have here only has an eject. |
Even if it didnt decode, its as easy as walking to your local electronics store and buying a good DAC IC. I forget the model number off hand, but there are some very cheap DAC ICs , and all data sheets for ICs are available on the net in PDF format. Or if you want to have more fun soldering, build your own DAC with a ladder circuit, quite easy. You should also be able to get the data sheet for your cd-rom drive you intend to use. And to clarify some of the last comments. Yes a CD-Rom drive has a DAC. Well all the ones i have used.
This project is very simple after you have the required documentation.
I would say you need only a couple parts.
1. Some debounce switches
2. Wire and solder
3. Possibly a GAL for addressing
4. Possibly (Cant remeber the exact chip but i think its a) 8510. This can be used to control 16 or 32 address lines (I think). Man i havent done this stuff since university. 
Even if you dont need addressing, you can always use this to control 16 or 32 programable inputs/outputs. (I dont think my part numbers are right, im getting confuzed between decrete electronics and industrial controls, But do a little research and you should be able to find the parts you need. If you cant i can always look in some text books for ya.
5. All the data sheets for the required components.
6. Oh almost forgot. Pickup a breadboard to prototype on, then a project board when your ready to solder.
&. And some resistors to build a DAC if needed or in your so inclined.
I dont have a data sheet handy for a CD-ROM, or the IDE controller so this is just a
generalization.
almost forgot.
Pickup some op-amps (Operational Amplifiers) and you can make a quick amplifier. There are many good layouts online.
And last but not least get some capacitors and resisitors for some high and low pass filters. You may have some noise, or you can make these with a potentiometer and have nifty bass and treble knobs.
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bnf
Posts: 238
Location: your ceiling
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| Posted: Thu, 26th Jan 2006 17:20 Post subject: |
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| Jenni wrote: | | SuTuRa wrote: |
I think you´re a little confused... He just wants to play normal audio cd´s in the cd-rom. So no need for decoding cuz it´s normal .cda files. |
But a cda file still needs to be decoded as it's data. I'm not sure that the cdrom decodes it or if it routes it to the cpu/memory for decoding. The only real way of finding out is to wire it upto a psu and no ribbon cable and plugging in a small 3.5 jack. |
I'm pretty sure it decodes, that's why cdrom drives have analogue outputs you can hook up to your sound card and I also don't find it likely that the cdrom sends data via the ide bus to the cpu and gets decoded data sent back so it can output it on the microphone jack.
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| Posted: Thu, 26th Jan 2006 18:01 Post subject: |
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every cd-drive for PC decodes the music itself. no need for additional stuff.
You can actually take out the drive, give it some power, put in a cd and plug in some earphones and you'll get music.
My problem is the buttons. I want more than just the standard eject/skip button my drive has...
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