Searching \ for '(OT) Re: Thanks for the Information' in subject line. ()
Make payments with PayPal - it's fast, free and secure! Help us get a faster server
FAQ page: www.piclist.com/techref/index.htm?key=thanks+information
Search entire site for: 'Re: Thanks for the Information'.

Truncated match.
PICList Thread
'(OT) Re: Thanks for the Information'
1999\08\18@191832 by Stuart O'Reilly

flavicon
face
I've been thinking of a car computer as well, for playing MP3's, I thought of
making control panels that connect to the LPT port (using a pic) to control what
song and playlist etc but it looked to hard to do the windows software. So to ge
t
around it I've decided to get an (ntsc) 4" LCD monitor from Timeline inc for
about $70 - $80 and connect this to the video out of an AGP video card and to
controll it I'll use a trackball therefore no custom written software, no hassel
s
etc
Regards
Stuart
P.S. I've priced motherboards here in Aus and i can get a motherboard with AGP
video, sound,100 baseT network card and a 56K modem all built in (making it very
compact) for about $180

Mark Willis wrote:

{Quote hidden}

1999\08\18@214359 by Steve Ridley

flavicon
face
Stuart

This sounds brilliant to me. I have been thinking of building an MP3 player
for my lounge room and you have almost done the entire design for me. Where
do I get this stuff ? Now what about a remote control. I was planning to
make my MP3 player Linux based. I figured I could knock up a bit of code to
read the parallel port to provide an external user interface but I suffer
from chronic laziness and if I can avoid doing any work I will. What about
fan noise. Is it possible to load this motherboard you have suggested with a
processor that doesn't need a fan. I have discovered you can get away with
less processing power doing MP3 stuff under Linux than Windows. This might
help.

Steve

{Original Message removed}

1999\08\18@225502 by Stuart O'Reilly

flavicon
face
Steve Ridley wrote:

> Stuart
>
> This sounds brilliant to me. I have been thinking of building an MP3 player
> for my lounge room and you have almost done the entire design for me.

I've been thinking of having one for home as well, get it to run through my home
automation system I'm slowly building up. That way I can do all the MP3 encoding
at home and when I drive in I just run a network cable out to my car and drag
and drop albums and playlists from inside to my car.

> Where
> do I get this stuff ?

http://www.winamp.com for the player (for win95)Just computers magazine (in Australia)
for the motherboard and other parts or a computer swap meet/market
You'll have to design your own powersupply for the car

> Now what about a remote control. I was planning to
> make my MP3 player Linux based. I figured I could knock up a bit of code to
> read the parallel port to provide an external user interface but I suffer
> from chronic laziness and if I can avoid doing any work I will.

I can't say to much about linux, I've tried running it at home but it's a steep
learning curve on your own, you could do the code yourself if you can but i was
trying to do it on the KISS principle

> What about
> fan noise. Is it possible to load this motherboard you have suggested with a
> processor that doesn't need a fan. I have discovered you can get away with
> less processing power doing MP3 stuff under Linux than Windows. This might
> help.
>
> Steve

I'm not to sure if you can get a processor without a fan these days. What sort
of fan noise do you mean? wind noise or electrical noise.
I'd say you could get away with less processing power under linux than windows
(it also would save you buying a copy of windows) and if I was experienced
enough in Linux I'd probably go that way myself.
Ive mentioned this Idea to friends and  if I got this working I think Iwould be
making four of them rather than one.
Regards
Stuart

1999\08\18@234611 by Thomas Brandon

flavicon
picon face
There is no way you could run any processor without a cooling device I don't
think. Certainly not a SLOT chip, they have fans built onto the chip. You
could replace the fan with a peltier device but these chew a wack of power
which is bad in the car. But it'd be nice for the home model to have silence
(although I'm not sure how quiet Peltiers are). Also, MP3 decoding should
take the same ammount of processor regardless of platform but of course the
processing overhead of Windoze will crank abit of heat. But just MP3
decoding will push even a low end pentium.

A 486 would be pushing it, although Winamp has options to tailor decoding
for a 486. Or you could build an ISA decoder card and use a 286 (need own
software to pump to card but that's it). Certainly a P100 could do the
software decoding and run Windoze.

AU$770, that's a bit excessive (both in terms of an MP3 player and in terms
of what you're getting).
Try this for a similar system:
$140 for Celeron 366 (or $170 for a celeron 450)
$285 for 13gig ($215 for 8Gb)
$50 for 32meg (or $80 for 64)

Totals:
C366/32Mb/13Gb - $475 + $260 (M/B + display) = $735 (same price but 13Gb
with celeron 366 (don't know what you had) and 32 (again don't know what you
had))

All these prices are from the TPO (http://www.tpo.com.au).
But that's a good desktop let alone Mp3 decoder. If i were you I'd be
heading to a bargain computer store and saving yourself a good few hundred
bucks by buying a low level pentium with 32Mb (or maybe only 16Mb) and a
seperate sound card and video card. It may not fit under the seat but you'll
have a couple of hundred dollars to build a place for it in the boot and
upgrade your car stereo.

Tom.
----- Original Message -----
From: Stuart O'Reilly <spam_OUTpigTakeThisOuTspamAR.COM.AU>
Subject: Re: (OT) Re: Thanks for the Information
> > What about
> > fan noise. Is it possible to load this motherboard you have suggested
with a
> > processor that doesn't need a fan. I have discovered you can get away
with
> > less processing power doing MP3 stuff under Linux than Windows. This
might
> > help.

1999\08\19@004637 by Ben Stragnell

flavicon
face
Alternatively, if you fancy getting your hands a bit dirtier, do what
I'm doing, and use a PIC, with a MAS3507D mp3 decoder chip.

       http://www.codepuppies.com/~ben/sens/pic/mp3

A bunch of people are doing similar projects - there's a list of them at

       http://spectsoft.dynip.com/mp3tech/index.htm

Cheers,
Ben

1999\08\19@004702 by Steve Ridley
flavicon
face
I meant the wind noise of the fan. I really notice it late at night. Of
course this wouldn't be a problem in a car and probably not at all when the
music is playing.

I am just learning to use Linux myself and I agree the learning curve is
steep. However, I have already discovered things are just that much more
reliable than on Windows. This has been very apparent when ripping CD's. I
decided to go this way because after years of use I had the impression that
Windows couldn't run long enough to play a whole CD. Not in one go.
<straight face>

>
>> What about
>> fan noise. Is it possible to load this motherboard you have suggested
with a
>> processor that doesn't need a fan. I have discovered you can get away
with
>> less processing power doing MP3 stuff under Linux than Windows. This
might
>> help.
>>
>> Steve
>
>I'm not to sure if you can get a processor without a fan these days. What
sort
>of fan noise do you mean? wind noise or electrical noise.
>I'd say you could get away with less processing power under linux than
windows
>(it also would save you buying a copy of windows) and if I was experienced
>enough in Linux I'd probably go that way myself.
>Ive mentioned this Idea to friends and  if I got this working I think
Iwould be
>making four of them rather than one.
>Regards
>Stuart
>

1999\08\19@010718 by Bob Blick

face
flavicon
face
>There is no way you could run any processor without a cooling device I don't
>think. Certainly not a SLOT chip, they have fans built onto the chip. You
>could replace the fan with a peltier device but these chew a wack of power
>which is bad in the car. But it'd be nice for the home model to have silence
>(although I'm not sure how quiet Peltiers are). Also, MP3 decoding should
>take the same ammount of processor regardless of platform but of course the
>processing overhead of Windoze will crank abit of heat. But just MP3
>decoding will push even a low end pentium.

I tried using just a large heatsink on both a P90 and a K5-75. It works
fine at room temperature with the covers off, but inside a case there's
just no way. It locked up after 20 minutes. If you used a peltier device
without a fan you would need a very significant heatsink. The sound of a
processor fan is about the same as a hard disk anyway.

Full decoding is possible on a 486 or 586 @ 120 mhz but almost anything
will cause it to glitch. A K5-75 or Pentium 75 is perfectly happy. I can
play tunes while shoving files to the player about 1 megabyte/second
through ethernet, and it is smooth with a P90, and glitches a bit with a
K5-75. Partly that might be due to bus speed, 50mhz on the 75 and 60mhz on
the 90, since it's a throughput problem(or maybe just need to "nice" the
ftp task).

If you need a power supply you can copy mine:
http://www.bobblick.com/bob/projects/yamm/

If you use a motherboard with on-board audio, you might want to look at my
fix for crappy sound:
www.bobblick.com/bob/computer/cmi8330.html
It applies to the cmi8330 sound chip and also the HT1869 which is the same
thing.

Cheers,
Bob

1999\08\19@011033 by Mark Willis

flavicon
face
Stuart O'Reilly wrote:
>
> Steve Ridley wrote:
> > <snipped>
> > What about
> > fan noise. Is it possible to load this motherboard you have suggested with a
> > processor that doesn't need a fan. I have discovered you can get away with
> > <snipped>
> I'm not to sure if you can get a processor without a fan these days. What sort
> of fan noise do you mean? wind noise or electrical noise.
> <snipped>

One local store has a fanless CPU heat sink that's for P100 or so
machines (Made by Micron), it's a nice "Top Hat" shaped aluminum dealie,
about $5 or so.  I think if you put a nice heat sink atop the CPU, and
thermally attached that heat sink to the Case - or Car Chassis, you
could do without a fan (or at least without much of one.)  Something
like a steel or aluminum strap, say 2" wide, 1/4" thick, should carry a
lot of heat to the case.  Thicker is better, here <G>  If you had a
Celeron or something, I'd try a heat sink that was on the outside of the
case, maybe, and pretty darn huge (say 10" square by 1" tall fins, and
keep it clear of anything that'll clog up the air flow?)

A CPU fan really doesn't use up that much power, though, compared to a
CPU's use of power, and if your CPU overheats it's not going to work
right.  I have laptops that have CPU fans, with all the power you have
available on a car, I'd just run a CPU fan, probably...

And don't worry about electrical noise (The switching electrical power
supply {DC-DC converter} generates more noise than any fan CAN generate,
methinks...)

 Mark

1999\08\19@093338 by Adam Davis

flavicon
face
Where are you getting such motherboards?  I've been looking for some all in
ones...

-Adam

Stuart O'Reilly wrote:
> Stuart
> P.S. I've priced motherboards here in Aus and i can get a motherboard with AGP
> video, sound,100 baseT network card and a 56K modem all built in (making it ve
ry
> compact) for about $180

1999\08\31@170121 by Cranston Grey

picon face
<x-flowed>Jut an FYI...

Any Processor CAN run without a fan. Case in point. I'm currently banging on
a stock Compaq Deskpro with a slot one Celeron 400mhz. No fan at all. The
heat sink is large and the case is large but, the heat build up is not bad
at all.

BTW. The users here love them because they are soooo.. silent.

Regards


{Quote hidden}

______________________________________________________
Get Your Private, Free Email at http://www.hotmail.com

</x-flowed>

1999\08\31@170950 by Bob Blick

face
flavicon
face
On Tue, 31 Aug 1999, Cranston Grey wrote:
> Jut an FYI...
> Any Processor CAN run without a fan. Case in point. I'm currently banging on
> a stock Compaq Deskpro with a slot one Celeron 400mhz. No fan at all. The
> heat sink is large and the case is large but, the heat build up is not bad
> at all.
> BTW. The users here love them because they are soooo.. silent.

No power supply fan either? Is this in an igloo?

I agree, fans are no fun, but PC power supplies are not designed for
convection cooling. You can put a quad-size heatsink on the processor and
get away with no fan as long as there is decent convection, but the power
supply is a different story. PC power supplies are crap and need all the
air they can get.

Just my .02

-Bob

More... (looser matching)
- Last day of these posts
- In 1999 , 2000 only
- Today
- New search...