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| Thread ID: 26067 | 2002-10-18 20:35:00 | The project a success, the idea failed. | E.ric (351) | Press F1 |
| Post ID | Timestamp | Content | User | ||
| 90605 | 2003-02-02 01:52:00 | The power socket at the back of a CD drive is often or usually, marked 5v, ground, ground, 12v. So I guess it uses both votages, maybe 12v for the drive and 5v for the logic circuitry. This is the problem with adapting computer stuff, like the query about the sound card, very, very much easier to go and buy an audio kit from Dick Smith or Jaycar. |
Terry Porritt (14) | ||
| 90606 | 2003-02-03 20:11:00 | Hey, does anyone think this would work as a cheap (ie free) cd player for in a car??. Got a decent stereo, a cdrom creative 2x, and the car is 12 v just need a regulator to get it down to 5v. ???? |
rmcb (164) | ||
| 90607 | 2003-02-03 20:32:00 | Technically yes, practically no. The in-car units have a high level of damping for vibration, and also I suspect quite a few Megs of buffering. A PC-type CD rom has neither, and would probably not be useable while the car was travelling. I base this on experiments I have done with a portable CD player, it had no buffering and was (almost) useless whenever a bump was felt it skipped. If you just want the music when stopped its likely ok. Has your car stereo got external inputs for a CD or similar? Use a 3 terminal voltage regulator (LM7805) to provide 5 volts, but the 12 volts may be the problem. I don't know the tolerance of the CD ROM for +12v, but your car system can easily get to 14 v or more. You cannot use an LM7812 voltage regulator to provide the 12 volts, as the input voltage will be too close to the output voltage to allow it to work. |
godfather (25) | ||
| 90608 | 2003-02-03 20:34:00 | AFAIK the outer two pins on the power lead are 12v and the inner two are 5v. If you can get some sort of regulator to lower it down from 12v to 5, although I bet ya there's some other pitfall I havent thought of here! I'll have a wee chat to a friend of mine, who used an old 4x CD-ROM and also an old garage door opener (3 buttons) and set himself up a small box that contains the CD-ROM in it, and he can control it remotely from his garage door opener! I'll go txt him now and see if he can help out :-) Cheers Chilling_Silence |
Chilling_Silence (9) | ||
| 90609 | 2003-02-03 20:37:00 | > Use a 3 terminal voltage regulator (LM7805) to > provide 5 volts, but the 12 volts may be the problem. > I don't know the tolerance of the CD ROM for +12v, > but your car system can easily get to 14 v or more. > Or, dip to around 10, when its stopped too.. Ive seen that happen, with a friends "Proper" car audio system. Runs such large speakers etc that it goes right down to 10v..... :) |
Chilling_Silence (9) | ||
| 90610 | 2003-02-03 20:42:00 | The title of this thread has bugged me ever since it was first posted. E.ric has been too modest or something. Surely the idea was a success but the project failed? A great idea and execution was only let down by faulty hardware. Cheers Billy 8-{) :D I think I must be getting $@#*&^ retentive in my old age. Fancy being bugged by something as silly as that:( |
Billy T (70) | ||
| 90611 | 2003-02-03 20:54:00 | > A great idea and execution was only let down by > faulty hardware. I believe it was Graham L who said: If the drawer does "not open, sometimes", keep a straightened paperclip handy. The wee hole in the front panel is for fixing that problem. It did work.. All you really need to do is replace it if it bugs you too much, otherwise, why not make a little paper-clip holder that sits beside it or sometihng :D |
Chilling_Silence (9) | ||
| 90612 | 2003-02-03 21:05:00 | Ummm . . . . . . . . . I think you sort of missed the point of my post Chill, if indeed there was any point :8} I was not concerned with the technical aspects of faulty CD ROMs and the wily ways of paper clips skilfully wielded . I just thought the idea was alright but the hardware caused flawed execution . E . ric indicated that he suspected a problem before he started because the CD ROM had a "faulty" label on it . Cheers Billy 8-{) :D |
Billy T (70) | ||
| 90613 | 2003-02-03 21:14:00 | Which brings me to ask, Chill..........How did you change the title of this post, or is that an internal access privilege?:| Cheers Billy 8-{) :D |
Billy T (70) | ||
| 90614 | 2003-02-03 21:22:00 | When you hit reply - Up the top is an edit box called subject, just about the formatting options, emoticons, quote original.... Change that :-) |
Chilling_Silence (9) | ||
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