TI-H: javier


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TI-H: javier




what is ur site?
----- Original Message -----
From: Javier <grijalba@cvtci.com.ar>
To: <ti-hardware@lists.ticalc.org>
Sent: Wednesday, October 06, 1999 10:26 PM
Subject: RE: TI-H: MP3 player for cars


>
> Hi Jeff
> Did you find any nice inverter schematics or power supplies for the car
mp3
> player ??
> Javier
>
> -----Mensaje original-----
> De: jeff dezur <jeffd@wwnet.net>
> Para: ti-hardware@lists.ticalc.org <ti-hardware@lists.ticalc.org>
> Fecha: Miércoles 6 de Octubre de 1999 02:29 a.m.
> Asunto: Re: TI-H: MP3 player for cars
>
>
> >
> >Note: this is on topic for DKs message, and is lengthy. Delete if you
> aren't
> >interested.
> >--------------------------------------------
> >
> >Yes, you can do it this way(with a rio), but even with 64 MB of flash
ram,
> >which is EXPENSIVE (if you buy the expansion cards alone) you can still
> only
> >put on maybe 25 MP3s, with them being 2.5-3 MB each. You might as well
just
> >go buy a 10 disc CD changer for the price of the rio. No its not very
> >portable, but you get a LOT more music.
> >
> >Also, if you wanted to compare a 10 disc CD changer to an linux MP3 box,
> you
> >can fit about 150-170(or more) songs onto a CD. Thats about 10-12
> >discs(straight audio) per MP3 CD. With the price of hard drives now, you
> >might as well just buy a 10 GB, fill it with MP3s, and essentially put a
> 100
> >disc CD changer inside your car. I bought a 10 gb hard drive the other
> week,
> >and it was only $125. Yes, I could have gotten western digitals 27 GB,
but
> I
> >didn't quite have the extra $150 bucks. You can tell from this that the
> cost
> >per MB is a TON cheaper than a bunch of CF cards for a rio.
> >
> >Now, in the way of hardware hacking, I made one myself, which I can
convert
> >from a car player to a stereo player just by bringing it in the house(how
> >convienent).  I used pretty much used, leftover parts with it, and its
been
> >running for about a year or so without any problems. it does use win95,
but
> >I really hate how long it loads. But, I'm too lazy to customize a kernel
> for
> >linux. The way I have it set up, isn't anything special. Win95 runs off
the
> >HD, I've got a little VB program I made up so when it runs, it checks the
> CD
> >in the drive (if there is one), makes up a playlist (only adds mp3s, that
> >way, I can take some of my software/mp3 combo cds, and use them), saves
it
> >to the HD, runs the mp3 software I made up (its got an LCD control panel,
> >and uses a little remote I made up, all together in the same packaging),
> >plays and plays, until I go to shut down (option on the remote), when it
> >closes everything, and powers down the system. I have an ATX motherboard,
> >and use a remote switch on the remote for powering up/down, also, it will
> >shut itself off when I go to shutdown. :) The remote lets me select the
> >songs, shuffle, volume (for fine tuning), repeat play, and basic
functions
> >like shutting down, rebooting, etc. The lcd display shows the title of
the
> >song, artist, time elapsed, the menu system, etc...
> >
> >For the shock resistance, I didn't do anything much but put the hard
drive
> >in a 5 1/4" slot in the case, and put it on one of those rubber mounted
CD
> >holders for cars(got that at radio shack, about 2 years ago). it hasn't
> >skipped once yet, and if it did, I would have known it. :) I am a little
> >more cautious about driving when its on, because I know that going over a
> >set of 4 inch high speed bumps doing 50 would probably trash the hard
> drive.
> >But its a pickup, so if you drive a lexus, you definitly don't need to
> worry
> >about shock resistance. Hard drives I've found are pretty stable.
> >Temperature changes though are bad for it, I know, and living in
michigan,
> >the winters are harsh, (worse in alaska where grant lives) but I'm not
too
> >sure how well the hard drive will do this winter. last winter, on really
> >cold mornings (20 degrees or colder) the computer didn't want to work
very
> >well. but after I was driving for about 20 minutes with the heat on, it
was
> >fine.
> >
> >The CD shock protection, I have only one answer: PUT A BIG BUFFER IN
> PLAYER!
> >with the software I developed, it re-reads a few times if it screws up.
:)
> >and the chances it screws up twice or 3 times in a row is slim... it's
only
> >reading maybe 500k at a time, and that lasts a good 4 seconds...
> >
> >Price wise, this is what I came up with.
> >
> >LCD, wire, controller = maybe $25.
> >MB=$70
> >Processor = $50 (a pentium 233 mmx... slow, but efficent, and WAY
overkill
> >for the box)
> >HD=$100 (its a 2gb, but I bought a long time ago. you can get a 8 gb now
> for
> >that price.)
> >CD-Rom = $35 (its a 32x, lots of overkill)
> >ram=$50 (its 32 MB, but ram has skyrocketed in price with that earthquake
> in
> >taiwan)
> >case= maybe $20 (its customized to fit my pickup, price comes from the
> power
> >supply)
> >soundcard=$20 (el cheepo)
> >Net card=$15 (generic 10base-t)
> >power inverter = $40 (a little 140 watt does great)
> >cassette adapter = $15 (got it on sale, but I'm sure its cheaper
somewhere)
> >line filter = $20 (I get this nasty humming noise off the power supply.
> >Probably because the inverter is a square wave sine, and the power supply
> >doesn't like it much. this cleaned that up VERY nicely.)
> >-------
> >total=$410 + tax.
> >Rio (last I checked) = $230 at beyond.com
> >CD Changer = $210
> >
> >Tell me if this doesn't kick a Rio's ass... No, its not very portable,
but
> >it serves my purposes well. only bad part with this, is I spent days
> writing
> >the software for it (i could have just bought the OCX controls for VB,
but
> I
> >wanted this to be inexpensive). it's a bigger shell-out in the beginning,
> >but you see how much you spend in AA batteries + CF cards, while mine
runs
> >off the car... and mine holds 200 files on the hard drive, plus another
150
> >on a CD.
> >
> >Next thing I want to change, is put the GPS reciever I've got into the
> >works, and change the LCD to a color touchscreen active matrix LCD panel,
> >then run a modified version of Explorer in win95 so it'll be compatible.
> Put
> >in the DVD & video card, so I can watch movies while in traffic. Then
> >replace the radio with the computer display(unfortunatly its a leased
> truck,
> >so ripping out the factory radio isn't so good), pop in a radio card in
the
> >expansion slot, lose the cassette adapter, run the speakers into the
> >computer, get a better power supply (need to somehow get about 5 amps on
a
> >+5V signal into the computer... and a 7805 chip only gives 1 amp MAX),
and
> >make my car able to drive itself... :)
> >
> >-Jeff D.
> >P.S. Anyone know where I can get a touchscreen LCD panel (color of
course)
> >for a relatively cheap price? it needs to be about 5" high and 7" long.
> I've
> >been getting prices like 600 to 800 bucks. :(
> >
> >
> >----- Original Message -----
> >From: Paul Kafasis <punkrock17@home.net>
> >To: <ti-hardware@lists.ticalc.org>
> >Sent: Tuesday, October 05, 1999 6:48 PM
> >Subject: Re: TI-H: MP3 player for cars
> >
> >
> >>
> >> David,
> >>  I'm sure others can point you to lots of specific car MP3 players, but
> >> one suggestion is to get a RIO 500, and use a tape adapter, just like
> >> with a portable CD Player(assuming you have a tape player). This is a
QD
> >> method, but it involves zero in the way of hardware hacking.
> >>
> >> -P
> >>
> >>
> >
> >
>
>
>
>

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