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4hv.org :: Forums :: General Science and Electronics
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Making a VGA projector with an old LCD screen...

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Inducktion
Sat Dec 10 2011, 07:51PM Print
Inducktion Registered Member #3637 Joined: Fri Jan 21 2011, 11:07PM
Location: Buffalo, NY
Posts: 1068
I tore apart an old LCD monitor some time ago, and was wondering if it would be possible to make a projector using the board?

Link2

Problem is, though, I only kept the board directly attached to the LCD, and here's the single cable that comes out of it;

Link2

Is this a lost cause trying to make a VGA cable with this, or even trying to make a projector?

Thanks!
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Experimentonomen
Sat Dec 10 2011, 07:53PM
Experimentonomen Registered Member #941 Joined: Sun Aug 05 2007, 10:09AM
Location: in a swedish junk pile
Posts: 497
Forget about it!! Your much better of just buying a used lcd or dlp projector.
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testtest
Sat Dec 10 2011, 10:27PM
testtest Registered Member #3271 Joined: Mon Oct 04 2010, 02:29AM
Location: Canada
Posts: 159
This might give you some ideas!
Link2
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Turkey9
Sat Dec 10 2011, 10:58PM
Turkey9 Registered Member #1451 Joined: Wed Apr 23 2008, 03:48AM
Location: Boulder, Co
Posts: 661
I don't know exactly what all the connections are, but a lot of monitor screens are controlled via SPI by a microcontroller that interprets the incoming VGA signal. In short, without the controller board, it's not possible for the average hobiest.
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Carbon_Rod
Sat Dec 10 2011, 11:59PM
Carbon_Rod Registered Member #65 Joined: Thu Feb 09 2006, 06:43AM
Location:
Posts: 1155
That is likely an LVDS cable, and they are usually a manufacturer specific implementation of the protocol.... Could be a fun fpga and dual ported vram project... wink

Or...
An LED based Pico Projector is less than $100 on ebay, and some even have direct iPhone interface cables.

Cheers,
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Patrick
Sun Dec 11 2011, 03:24AM
Patrick Registered Member #2431 Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
Are both pics the same in the first post?
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Inducktion
Sun Dec 11 2011, 03:59AM
Inducktion Registered Member #3637 Joined: Fri Jan 21 2011, 11:07PM
Location: Buffalo, NY
Posts: 1068
Um, I guess they are! That would be a mistake on my part. :P
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Shrad
Tue Dec 13 2011, 10:45AM
Shrad Registered Member #3215 Joined: Sun Sept 19 2010, 08:42PM
Location:
Posts: 780
there are cheap direct VGA to LVDS converters on ebay from an unique chinese seller (no other seller has them)

I had a look to get some small 5"7 touch panel controllers, but they don't have a firmware for my TFT, but they have great controllers for LG, toshiba, dell and other TFT panels up to 13xx resolution, with audio in, tuner in, dvi in/out, etc...

not too hard to find, sorry I have no URL as I'm at work right now
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