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Do It Yourself CD Changer 183

Posted by CmdrTaco
from the surprisingly-elegant dept.
SuperDuG writes "This is a true homebrew solution to saving a few bucks when it comes to cd changers. And to make it even better the whole setup is controlled by none other than linux. Seems like a nice setup to do batch burns without user interaction. Source is provided if you wanted to build your own." Not sure if this is very practical, or even if it would be cheaper than buying a changer, but it sure looks cool.
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Do It Yourself CD Changer

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  • by mirko (198274) on Tuesday July 22, 2003 @07:55AM (#6498288) Journal
    You're right : he's a genuine hacker.

    I am however much more impressed by his organ [sentex.net] as he does not only need some manual skills but also a good ear to set it up.
  • Mislead by Title (Score:2, Interesting)

    by 955301 (209856) on Tuesday July 22, 2003 @08:00AM (#6498324) Journal
    I went into this one expecting to find a pc emulating an automobile CD changer. This is an idea I've been wanting to try out for a while. I've shelved it for a while because I have too many things going on, and lack of knowledge on my part.

    Does anyone anything about emulating a cd changer's controls so I might plug a computer into the back of a stock car stereo with changer support, and fake it into driving an ogg player?

    From what I gather, each system's pinout is different, but generally they all have to work the same, right?
  • by doomy (7461) on Tuesday July 22, 2003 @08:06AM (#6498359) Homepage Journal
    I was looking at this guy's wooden assembly and all I could think was, why didn't he use an used dot matrix/ink printer for the carriage. That would certainly be pretty interesting to play with, and would definitly be more precise, ofcourse he'd still need the up and down movement done using another motor.
  • by WesG (589258) on Tuesday July 22, 2003 @08:06AM (#6498364)
    Check out the Rubiks cube solver made entirely out of Lego's.

    http://jpbrown.i8.com/cubesolver.html

    Even uses a cam to figure out what is on each of the cubes faces!
  • by TerryAtWork (598364) <research@aceretail.com> on Tuesday July 22, 2003 @08:12AM (#6498404)
    We really need a cheap CD/DVD jukebox. I've seen them at Comdex etc for $25,000. The hell with that.

    Someone get a carousel CD player at Target for $100 and wire it up to a computer. There's 70,200 megs nearline.

    Anyone up for that?

  • Interesting (Score:3, Interesting)

    by Jeff DeMaagd (2015) on Tuesday July 22, 2003 @08:14AM (#6498414) Homepage Journal
    I was thinking of doing the same by making a MiniDisc megachanger. Instead, for now, I bought a Sony CD-Audio megachanger and it worked out of the box. I still intend to go back to that idea though.

    One thing I wish would be done is better control of the Sony CD changer. There are S-link projects out there but all use the parallel port, and IMO, that's too hacktastic, I'd want to continue or build a serial port S-link controller. There is some _very_ slick control software that can even ID all the discs and tracks in the changer, and you select a track on a computer and the changer will play your music. Most people would do MP3 instead, but man-machine and electrical-mechanical interfacing is cool.

    Unfortunately, there aren't any Sonys that can burn discs, at least none that I know, and none that I know that can be used as a CD-ROM changer, at least affordably, so this project still has some merit.
  • by chrestomanci (558400) * <david AT chrestomanci DOT org> on Tuesday July 22, 2003 @08:15AM (#6498415)

    A friend of mine used to be in an unsigned Metal band. He told me that one of the most boring parts is copying CDs. Apparently commercial CD copy companies usually had a minimum order that was quite large, and always invented problems with whatever was sent to them, creating longer turn around and more hassle. The cost per CD was also quite high compared with burning their own on a CDR.

    Instead, what he would do, is to setup his PC next to a sofa in front of the TV, and manually swap CDs, while watching TV. He said that if he managed 20 CDs per hour (on his 40x burner) he would be doing well, but tropically managed less than that.

    It was of course, boring, and prone to error.

    A contraption to automatically load, burn and unload CDs, like in the article, would have been much better. He could have loaded it up with 200 blanks, gone to bed and come back in the morning to find it jammed, but at least with ~100 CDs done :-)

  • Re:Made out of wood? (Score:2, Interesting)

    by 91degrees (207121) on Tuesday July 22, 2003 @08:44AM (#6498595) Journal
    Ype. That's something I plan to do when I get home. I reckon I can make it considerably more compact as well. I'm surprised he used a linear rather than rotational mechanism. Surely that makes it rather large.
  • by ahfoo (223186) on Tuesday July 22, 2003 @08:48AM (#6498628) Journal
    This is definitely cool. For all the people saying this type of hack is irrelevant because of the storage difference between HDs and CDs, I must say that's rather short-sited when you consider that the form factor for optical media is most likely going to stay the same all the way into the violet laser media. So, while you could call this an out-of-date CD changer, you could also call it a cutting edge Blu-Ray changer. And commercial alternatives are insanely overpriced.
    But this is certainly not the last word on the matter. I've got my own plans as well. One thing we didn't see was any kind of performance specs about how big of an unattended stack the thing could handle. I read the part where he said it was just for fun, but I'd still like to know how many he could do consecutively.
    The option I'm considering is where you take a plastic housed stack of a hundred hundred discs sitting on a conveyer whith a slot at the bottom of the stack only big enough for one disc at a time to be rolled out. I think some of the commercaial solutions might work like this.
  • That thing is the type of stuff that us art-technology people like. It looks elegant, and it can be seen in a context apart from the fact that it burns CD's... it is creating copies, which could be seen as cloning one's self. If only he had thought of that at the time, it would've been a great work of art!
  • by Anonymous Coward on Tuesday July 22, 2003 @09:36AM (#6499027)
    I'm not sure, but how big a jukebox do you need? Here are a couple random links... But I guess u gotta shop around :)

    CD Server [cdw.com] Controller box for an audio CD changer [nirvis.com]
  • Re:Mislead by Title (Score:3, Interesting)

    by cloudmaster (10662) on Tuesday July 22, 2003 @09:37AM (#6499051) Homepage Journal
    Have you been reading my old car mp3 player page [cloudmaster.com] or my old [google.com] usenet [google.com] posts [google.com] again? :)

    Note that my post about emulating the Kenwood occured about a month before the people at PhatNoise (now makers of the audio Keg) started working on their device. They actually finished theirs, which is more than I did. They're not real keen on sharing their specs, though. At least, they haven't been helpful when I've contacted them. Kenwood's been useless, too. Not that I'm bitter or anything. :)

    As far as how the things actually work, no, they use different control signals. Most do put the line-level audio on 3 wires back to the head unit, but they vary on how they detect the presence of a changer and control said changer. It's a good idea, though, and I'd really like to know if anyone ever documents how any of them work. It just *can't* be much more than can be done with a serial port...

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