New in car PC
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New in car PC
Well, I have finally got my incar PC setup
though using a video out the quality is not great.
though fine for DVDs
The trouble I am having though is interference on the screen and in the sound, I think it's associated with the power.
though using a video out the quality is not great.
though fine for DVDs
The trouble I am having though is interference on the screen and in the sound, I think it's associated with the power.
1996 Mini Classic 1275.
- Jamo
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You really want the earth on the car body no the battery, also what gauge wires are you using?MatBat wrote:yes, power is taken from the battery, and the earth is to the battery
You'll want ground isolation loops on the alternator and on the RCA leads as well
[img]http://img.photobucket.com/albums/0603/JamoDodger/Avatar/startrek-bluescreen.gif[/img]
Ex 480 Turbo owner, Currently own Audi S2 Avant running 500-600 bhp
Ex 480 Turbo owner, Currently own Audi S2 Avant running 500-600 bhp
Issues of noise are an arse in these cars!
As my lecturer is fond of saying it's a hostile environment (I'm frickin hostile when handling electronics on the 480!!!)
A few hints- Ferrite beads are cheap as chips - slip them onto every wire going in and out of your PC - they add inductance to the wire - filtering out high-freq noise.
Suppress the altenator, plus the heating and cooling fans with a ceramic (non-polarised) capacitors across the terminals - also RS/Maplins etc sell noise supression blocks to push into the power supply lines to remove noise from the car electronics for ICE installs.
You can also buy shielded ignition leads next time they need replacing. They help lots if you don't have them already.
Ground your power to the car body as near to your pc as poss to avoid picking up extra noise from the engine bay through the earth cable. A really good earthing point helps.
Still getting noise? Twist a thin-insulation copper cable around the power cable while it's in the engine bay and then ground it at both ends. This creates a farraday-shield which will shield RF interference being picked up from sparks/injectors/ECU/CEM etc. as nothing is properly shielded in the 480.
If it's still getting through then you're in dire straits - but not that suprising as the electronics in the 480 were designed by the devil - so I'd say next step is to move the battery into the boot, or better still, fit a second battery (i.e. a Lesiure/Caravan) battery that trickle charges off the main battery and then use that to power the PC.
Good luck my friend - and good on you!
As my lecturer is fond of saying it's a hostile environment (I'm frickin hostile when handling electronics on the 480!!!)
A few hints- Ferrite beads are cheap as chips - slip them onto every wire going in and out of your PC - they add inductance to the wire - filtering out high-freq noise.
Suppress the altenator, plus the heating and cooling fans with a ceramic (non-polarised) capacitors across the terminals - also RS/Maplins etc sell noise supression blocks to push into the power supply lines to remove noise from the car electronics for ICE installs.
You can also buy shielded ignition leads next time they need replacing. They help lots if you don't have them already.
Ground your power to the car body as near to your pc as poss to avoid picking up extra noise from the engine bay through the earth cable. A really good earthing point helps.
Still getting noise? Twist a thin-insulation copper cable around the power cable while it's in the engine bay and then ground it at both ends. This creates a farraday-shield which will shield RF interference being picked up from sparks/injectors/ECU/CEM etc. as nothing is properly shielded in the 480.
If it's still getting through then you're in dire straits - but not that suprising as the electronics in the 480 were designed by the devil - so I'd say next step is to move the battery into the boot, or better still, fit a second battery (i.e. a Lesiure/Caravan) battery that trickle charges off the main battery and then use that to power the PC.
Good luck my friend - and good on you!
Greta - 1994 2.0 480 GT
Herbie - 1972 1.3 VW Beetle Deluxe
Kochanski - 1982 1.7 340 GLE - Gone, but not forgotten
Herbie - 1972 1.3 VW Beetle Deluxe
Kochanski - 1982 1.7 340 GLE - Gone, but not forgotten
- martinholmesuk
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..
Why is it better to earth ICE to the body as opposed to the neg terminal of the battery.Always wanted to know this one!!!!!
Steve.
Im sooooo chuffed with my new Alpine
Steve.
Im sooooo chuffed with my new Alpine
I'm No Longer Here :(
http://www.volvo-480-europe.org/forum/viewtopic.php?f=19&t=34359&start=20
http://www.volvo-480-europe.org/forum/viewtopic.php?f=19&t=34359&start=20
- Jamo
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Re: ..
catgroom wrote:Why is it better to earth ICE to the body as opposed to the neg terminal of the battery.Always wanted to know this one!!!!!
Steve.
Im sooooo chuffed with my new Alpine
Because the car is negatively ground, grounding using the car body allows better flow of current back to the battery (unless you use 0 or 2 gauge amp on the amp to battery).
Simply put more free electrons in car body due to greater surface area of metal.
Using a cable back to the battery cause a bottleneck and you normal get noise on the amps during playback.
For best results you want the shortest possible length of ground cable to the car body, normal within 18" or shorter if possible.
If you want a technical explanation search the web.
[img]http://img.photobucket.com/albums/0603/JamoDodger/Avatar/startrek-bluescreen.gif[/img]
Ex 480 Turbo owner, Currently own Audi S2 Avant running 500-600 bhp
Ex 480 Turbo owner, Currently own Audi S2 Avant running 500-600 bhp
Yeah - think of the car body like a massive wire returning to the battery - gives less resistance/capacitance and other nasties than a wire back to the batt.
/ALSO/ wires running through the engine bay should be avoided if you can. They pick up so much interference from the ignition/spark plugs and the four odd computers these 480s have it be horrible! <<Volvo once got slated from health and safety bods for the amount of electrical noise in their cars... they said the S40 was worse than mobile phones>>
/ALSO/ heavy guage, good quality wire for ICE power is expensive!
/ALSO/ wires running through the engine bay should be avoided if you can. They pick up so much interference from the ignition/spark plugs and the four odd computers these 480s have it be horrible! <<Volvo once got slated from health and safety bods for the amount of electrical noise in their cars... they said the S40 was worse than mobile phones>>
/ALSO/ heavy guage, good quality wire for ICE power is expensive!
Greta - 1994 2.0 480 GT
Herbie - 1972 1.3 VW Beetle Deluxe
Kochanski - 1982 1.7 340 GLE - Gone, but not forgotten
Herbie - 1972 1.3 VW Beetle Deluxe
Kochanski - 1982 1.7 340 GLE - Gone, but not forgotten
- martinholmesuk
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- coyote1980
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Here is a pic of the mainpage:
and here is the carpc in an old cd-changer housing:
the setup:
via epia m1000@1200mhz, 7" touchscreen, 256Ram, 30gb hd, slim dvd-rom, onboard sound and grafic-card, gps-antenna.
i`m planning to get an additional sound card to improve sound quality and a rs-card for connecting it to lambda sond etc.
still to do: ir-port and fixing the heat problems
and here is the carpc in an old cd-changer housing:
the setup:
via epia m1000@1200mhz, 7" touchscreen, 256Ram, 30gb hd, slim dvd-rom, onboard sound and grafic-card, gps-antenna.
i`m planning to get an additional sound card to improve sound quality and a rs-card for connecting it to lambda sond etc.
still to do: ir-port and fixing the heat problems
ok i`m warnedAdam Wants Adam is going to get
So very sweet.
New summer project!
Is it powered off a mains converter, or have you got it running from 12+ DC?
You;ve done a wikid job fitting the screen into the dash!
Tell us all, we are leaches for information on pretty gadgets!
New summer project!
Is it powered off a mains converter, or have you got it running from 12+ DC?
You;ve done a wikid job fitting the screen into the dash!
Tell us all, we are leaches for information on pretty gadgets!
Greta - 1994 2.0 480 GT
Herbie - 1972 1.3 VW Beetle Deluxe
Kochanski - 1982 1.7 340 GLE - Gone, but not forgotten
Herbie - 1972 1.3 VW Beetle Deluxe
Kochanski - 1982 1.7 340 GLE - Gone, but not forgotten