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09-28-2006, 06:04 PM
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#1
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FLAC
Join Date: Jun 2006
Location: Calgary, Alberta
Posts: 1,074
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LCD Screen: Does the Accessory wire have to be regulated too?
Hi.
My carputer project is almost done! My LCD screen just came in this week and all I have to do now is remove my dash and plug everything in (I have everything prewired). I plan on installing everything this weekend, when I dont have any homework. I have done much testing and I am pretty sure this will work. However, my initial designs meant that my LCD screen would run off the 12 volt PSU on my computer. However, I want to run it off the car's electrical system, that way, my screen can still open/close when the computer is off. I already built a 12 volt regulator based on the lm317 chip (for something else) and I would like to use it to regulate the voltage going into my new LCD. My LCD's model is DPI.107B. I think it is equivalent to the MTSVO-SC sold on the mp3car.com store. My question is, if I regulate the voltage powering my LCD screen, does the accessory voltage have to be regulated as well? Is it okay if I just regulate the power in, but not my accessory voltage?
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09-28-2006, 09:30 PM
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#2
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Neither darque nor pervert
Join Date: Apr 2004
Location: Elsewhere
Posts: 12,911
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If the screen requires regulated 12v power (Lilliput), then yes, you'd have to regulate the ACC line.
__________________
LOOKING FOR THE FAQ? IT'S HERE.
You never found that link, did you? Why? It's hard to find in the NavBar across the top of the forums, amongst a lot of other crap.
TELL MP3CAR YOU WANT A LINK TO THE FAQ IN A MORE OBVIOUS, NOTICABLE LOCATION HERE.
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09-29-2006, 02:41 PM
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#3
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FLAC
Join Date: Jun 2006
Location: Calgary, Alberta
Posts: 1,074
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But the ACC line only is used for signal. My +12 volt and ground is what the screen is drawing power from.
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09-29-2006, 03:30 PM
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#4
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Low Bitrate
Join Date: Jun 2006
Location: St. Asaph, UK
Posts: 100
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i asked this and no one seemed to know 
i think the flip out lilli needs power to remeber where to stop too
__________________
2001 Passat 130TDi Sport - Via Epia 15000, 1gb, 100gb, 220w psu, 7" lilliput motorized touch (chopped and in dash as a fixed), bluetooth, bu-303 gps, 7 port usb hub, tiny keyboard, netgear 54mb wifi, optima yellow top, ryder rt1170x, freecom dvb
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09-29-2006, 04:24 PM
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#5
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FLAC
Join Date: Jun 2006
Location: Calgary, Alberta
Posts: 1,074
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Yea I figure I'll use regulated power direct from the car's battery. That way, I can open and close the screen whenever I want. Eg. I want to be able to close then screen when my computer automatically shutsdown.
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09-29-2006, 04:35 PM
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#6
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Newbie
Join Date: Aug 2006
Posts: 48
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where is the best place to get a regulator from? I have never used one, don't even know what they look like....but I know I need one to get rid of the lines on my screen! haha
oh, I am in the UK by the way.
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09-30-2006, 12:32 AM
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#7
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FLAC
Join Date: Jun 2006
Location: Calgary, Alberta
Posts: 1,074
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You can build your own regulator. If you have installed a computer in your car, I'm guessing you probably have the skill to make a simple voltage regulator. Here is a very helpful tutorial on building a regulator: http://casemods.pointofnoreturn.org/...rial-full.html
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