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06-01-2002, 07:34 AM
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#1
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Registered User
Join Date: Jan 2002
Location: Wollongong, Australia
Vehicle: 2000 Jeep Grand Cherokee, 4.7L V8
Posts: 158
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using LPT plugs for quick connect -> LCD Extension
Hi guys,
I am about to extend my LCD cable. It is a 20 core sheilded cable.
I have a 25core parallel cable (printer cable) here that i am going to cut up and use for the extension (this should be ok right? i think it is sheilded, it has foil on the inside of it????).
In order for me to quickly and easily remove the screen from my car, i am going to use the 25 pin connectors on the end of the parallel cable to connect the screen to and from the extension lead.
In essence, the LCD will now have a 25pin LPT connector on a short lead, and the extension lead will have the opposite sex plug on one end and the connector to the controller on the other.
can anyone see any problems with this idea?
Cheers!
Ian
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06-01-2002, 07:45 AM
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#2
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Low Bitrate
Join Date: Apr 2002
Location: Lafayette, LA
Posts: 79
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Just exactly how far are you extending? Parallel signals really can't go that far. I've had lots of trouble with my LCD in my car. You can't use a normal parallel extension cable? If I were you I'd definately try everything outside of the car because it would suck to do all that work then have it not work.
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06-01-2002, 08:06 AM
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#3
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Registered User
Join Date: Jan 2002
Location: Wollongong, Australia
Vehicle: 2000 Jeep Grand Cherokee, 4.7L V8
Posts: 158
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Quote:
You can't use a normal parallel extension cable?
Thats what i want to use! Why wouldn't it work?
Quote:
Parallel signals really can't go that far
Is video a parallel signal? In case you are mixed up...i am not extending a parallel signal from the parallel port. I am using the cabel from a parallel extension cable and using the 25pin plugs for a quick disconnect/connect solution for my LCD!
here is a diagram:
[PCI Controller]--------Extension---------[25pin Male]--/ --[25pin female]---------LCD.
get the gist? |
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06-01-2002, 08:18 AM
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#4
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Low Bitrate
Join Date: Apr 2002
Location: Lafayette, LA
Posts: 79
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Ohhh... Sorry bout that. I thought you were talking about a parallel character LCD.
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06-01-2002, 08:25 AM
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#5
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Registered User
Join Date: Jan 2002
Location: Wollongong, Australia
Vehicle: 2000 Jeep Grand Cherokee, 4.7L V8
Posts: 158
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Nah my appologies. I am talking about my 12.1" LCD.
My char LCD probs have finished! (for interest sake, i extended my char lcd's quite a distance with no degradation what so ever!)
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06-01-2002, 08:58 AM
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#6
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Maximum Bitrate
Join Date: Aug 2001
Location: Cambridge & Bristol, UK
Vehicle: Peugeot 205
Posts: 709
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I also want to do the same thing-I`m going to have an allen ruble controller in the boot, and a lg lcd up front. I figured that extending a digital signal is better than extending an analogue one (ie. vga signal).
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06-01-2002, 09:07 AM
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#7
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Registered User
Join Date: Jan 2002
Location: Wollongong, Australia
Vehicle: 2000 Jeep Grand Cherokee, 4.7L V8
Posts: 158
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That would make sense.....
anyone eles got some input! i want to know before i start cutting up my cable!
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06-02-2002, 10:53 PM
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#8
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Maximum Bitrate
Join Date: Jan 2002
Location: Chaska, MN
Vehicle: 1997 Jeep Wrangler
Posts: 695
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lpt cable used to extend my wires 14'
It introduced some scan lines, but you can hardly see them. |
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06-03-2002, 05:00 PM
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#9
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Newbie
Join Date: May 2002
Location: Slovenia
Posts: 37
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Quote:
Originally posted by MP3IAN by Ian Gregory
Nah my appologies. I am talking about my 12.1" LCD.
My char LCD probs have finished! (for interest sake, i extended my char lcd's quite a distance with no degradation what so ever!)
Did you have any problems extending the char lcd cable? what is the max. length of the parallel cable? Is 4m too much?
__________________
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Status: I still need to get some money to buy the inverter.
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06-04-2002, 02:24 AM
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#10
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Registered User
Join Date: Jan 2002
Location: Wollongong, Australia
Vehicle: 2000 Jeep Grand Cherokee, 4.7L V8
Posts: 158
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I successfully extended my Char LCD cable to about 2.5-3mtrs (rough guess) without any trouble. It was three Paralell cables joined together!
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06-04-2002, 02:28 AM
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#11
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Registered User
Join Date: Jan 2001
Location: The Netherlands
Posts: 626
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I have my char.lcd extended something over 4 meters..
no garbage or whatsoever... display behaves exactly the same as it was on a 20cm cable.. also.. my solderign is very dodgy, but the display doesn't care.. make sure you don't short something.
Greetz,
__________________
Raas - The Netherlands
ME: VIA epia m10000, lilliput 7', opus 150w, 80gb<br>
GF: IBM Thinkpad 380, ext. 3.5 80gb, 40x4, PB-IR
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06-04-2002, 04:11 AM
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#12
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Registered User
Join Date: Jul 2001
Location: The Netherlands
Vehicle: 1981 Citroen 2cv6
Posts: 307
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I tried extending both my character LCD & my 12.1 LCD neither worked with the extension. the character worked sometimes but not all the time. I guess this has something to do with the timing in my program, have to build in a delay when writing to the screen. My 12.1 didn't even go on, I'm gonna check my cable to see if there are any loose contacts...
__________________
If at first you don't succeed.........
destroy all evidence you tried
for info on t6369c LCD or Presslab's powersupply check:
http://www.namms.tk <=updated!!
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06-04-2002, 08:30 AM
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#13
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Registered User
Join Date: Jan 2002
Location: Wollongong, Australia
Vehicle: 2000 Jeep Grand Cherokee, 4.7L V8
Posts: 158
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That would be good! Let us know how you go!
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06-04-2002, 04:05 PM
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#14
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FLAC
Join Date: Jan 2002
Location: Mellansel, Sweden
Vehicle: Audi 90 -88, VW Polo CAB -81
Posts: 1,299
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I get crap on longer cables within the car, not at home... have ordered the amp-chips and will keep you posted.
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06-04-2002, 05:53 PM
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#15
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Newbie
Join Date: May 2002
Location: Slovenia
Posts: 37
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Maybe the length depends on your soldering skills or
MP3IAN, Raas: what software are you using?
__________________
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Status: I still need to get some money to buy the inverter.
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