Has anyone ever used this LCD or attemted to use it in a DIY projector? Legacy LM71 7" LCD Video Monitor. This is a very inexpensive LCD, I need to know a few things about it, and any testimonial to its performance.
Here is the link to it. http://www.savinglots.com/lotprod.asp?item=LM71
Does anyone know if the electronics are easily seperated from the back?
And what kind of quality can be expected from this pannel?
Any other issues with it or interesting points? Any help would be greatly appreciated.
Here is the link to it. http://www.savinglots.com/lotprod.asp?item=LM71
Does anyone know if the electronics are easily seperated from the back?
And what kind of quality can be expected from this pannel?
Any other issues with it or interesting points? Any help would be greatly appreciated.
I was just wondering the same thing yesterday.
I saw them a few places and it sound pretty good for the price.
I saw them a few places and it sound pretty good for the price.
I just don't want to put out so much money only to ind impossible hurdels to jump to seperate the electronics from the pannel itself. I am very much hopig that it is a simple proceedure. I don't even know who to contact to ask. I guess I could try and contact Legacy.
Just a little warning,
All 7" displays I've seen have a resolution of 'only' 400 something x 270
If they state the horizontal res. its always pixelx3
All 7" displays I've seen have a resolution of 'only' 400 something x 270
If they state the horizontal res. its always pixelx3
Would this not be a good pannel to use for that purpous, then? Also assuming the electronics could be seperated. I am tryig to find a low-cost way of making my projector, yet at the same time retaining the ability to display 16:9 properly.
However, if memory serves me, isn't DVD encoded at 1048x487 or somesuch odd resolution?
However, if memory serves me, isn't DVD encoded at 1048x487 or somesuch odd resolution?
.
I FIND IT A GOOD IDEA USING A CAR LCD MONITOR FOR PROJECTION.THE ONLY THING IS THAT YOU WILL SEE A LOT OF PIXELS BECAUSE OF THE LOW REZOLUSION.THAT DOES NOT MEAN THAT YOU WILL NOT BE ABLE TO WATCH A MOVIE OR PLAY A PS2 GAME.YOU WILL BE ABLE TO DO THAT BUT NOT WITH GOOD QUALITY I THINK.THE VGA OPTION IS OUT OF QUESTION.I SAY THIS BECAUSE I USED A 2,2" LCD FROM A POCKET TV THAT WAS NOT TFT,(A LOT OF LIGHT BLOCKING),WAS STN,(PIXELIZED TO DEATH) AND HAD A REZOLUTION OF 138X480.NOW IF YOU WOULD ASK ME TO SAY MY OPINION ABOUT THE PICTURE QUALITY IWOULD SAY THAT IT WAS 3 OUT OF 10 BUT YOU COULD STILL WATCH A MOVIE,EVEN READ SUBTITLES.THINKING OF THIS THE 7" LCD MONITOR WITH A LOT MORE REZOLUTION,TFT AND A/V INPUT PROBABLY WOULD GO FOR 6.5 OR 7 OUT OF 10 IF EVERYTHING SET UP PROPERLY.I AM UP TO THIS NOW BUT WITH A SMALLER LCD MONITOR FROM PYLE 5,6" WITH THE SAME SPECS OF THE LEGASY BUT 4:3 FORMAT.I THING WITH 4:3 FORMAT WILL LOSE LESS LIGHT THAN THE 16:9 WHERE A LOT OF LIGHT WILL BE LOST UP AND DOWN,EXCEPT SOMEONE HAS FOUND A WAY OF MAKING THE LIGHT BEAM SUITABLE FOR 16:9 IF YOU KNOW WHAT I MEAN.
ANYWAY I LIKE THE IDEA AND I HOPE IT WILL WORK.WHEN I FINISH WITH IT I WILL POST PICS,BUT YOU CAN NEVER SEE EXACTLY HOW A PROJECTED IMAGE LOOKS WITH PICS!
I FIND IT A GOOD IDEA USING A CAR LCD MONITOR FOR PROJECTION.THE ONLY THING IS THAT YOU WILL SEE A LOT OF PIXELS BECAUSE OF THE LOW REZOLUSION.THAT DOES NOT MEAN THAT YOU WILL NOT BE ABLE TO WATCH A MOVIE OR PLAY A PS2 GAME.YOU WILL BE ABLE TO DO THAT BUT NOT WITH GOOD QUALITY I THINK.THE VGA OPTION IS OUT OF QUESTION.I SAY THIS BECAUSE I USED A 2,2" LCD FROM A POCKET TV THAT WAS NOT TFT,(A LOT OF LIGHT BLOCKING),WAS STN,(PIXELIZED TO DEATH) AND HAD A REZOLUTION OF 138X480.NOW IF YOU WOULD ASK ME TO SAY MY OPINION ABOUT THE PICTURE QUALITY IWOULD SAY THAT IT WAS 3 OUT OF 10 BUT YOU COULD STILL WATCH A MOVIE,EVEN READ SUBTITLES.THINKING OF THIS THE 7" LCD MONITOR WITH A LOT MORE REZOLUTION,TFT AND A/V INPUT PROBABLY WOULD GO FOR 6.5 OR 7 OUT OF 10 IF EVERYTHING SET UP PROPERLY.I AM UP TO THIS NOW BUT WITH A SMALLER LCD MONITOR FROM PYLE 5,6" WITH THE SAME SPECS OF THE LEGASY BUT 4:3 FORMAT.I THING WITH 4:3 FORMAT WILL LOSE LESS LIGHT THAN THE 16:9 WHERE A LOT OF LIGHT WILL BE LOST UP AND DOWN,EXCEPT SOMEONE HAS FOUND A WAY OF MAKING THE LIGHT BEAM SUITABLE FOR 16:9 IF YOU KNOW WHAT I MEAN.
ANYWAY I LIKE THE IDEA AND I HOPE IT WILL WORK.WHEN I FINISH WITH IT I WILL POST PICS,BUT YOU CAN NEVER SEE EXACTLY HOW A PROJECTED IMAGE LOOKS WITH PICS!
THIS IS ANOTHER LCD MONITOR
PT-506HS
Amorphous Active Matrix TFT/LCD
5" Monitor With Swivel Butterfly Stand & Headrest Shroud
Black Matt Finish
Single Video Input
PAL/NTSC Switchable
Resolution: 960x 234
Dimensions: 6.25” x 4.5” x 1”
MOST OF THEM COME WITH A FULLY FUNCTION REMOTE CONTROL!
A DIY PROJECTOR WITH A R/C!
PT-506HS
Amorphous Active Matrix TFT/LCD
5" Monitor With Swivel Butterfly Stand & Headrest Shroud
Black Matt Finish
Single Video Input
PAL/NTSC Switchable
Resolution: 960x 234
Dimensions: 6.25” x 4.5” x 1”
MOST OF THEM COME WITH A FULLY FUNCTION REMOTE CONTROL!
A DIY PROJECTOR WITH A R/C!
Attachments
I have a couple clients I'm expecting payment from, and once I get them, I'm ordering one. I'll post my results.
If someone gets one before me, please let me know what happens.
Later.
If someone gets one before me, please let me know what happens.
Later.
WMT I don't mean to dis, but could you please not write in all caps.
Anyways, I had pondered in going the pocket TV route, only using a TFT LCD. 2.2". I read somewhere however that you just cannot pack enough pixels on a small, inexpensive consumer project that will look good when used to project. I'm not going to spend $150 on something that is not going to give the quality of something cheaper.
As for loss of light. I don't see why you would lose so much light comparitively. Simply focus the light and limit the size of the light enclosure so that it is focused through the LCD. It shouldn't matter what aspect ratio it is. Just a matter of backlight design. I had planned on using a theator quality lens that I saw on one of the major DIY sites instead of a Delta V, so that I can accomidate a larger LCD.
But like I said. I want to display 16:9 and not have it letterbox and distort on me. Nordic, if you get one of these, please post your results with ease of disassembly and picture quality. 🙂
Anyways, I had pondered in going the pocket TV route, only using a TFT LCD. 2.2". I read somewhere however that you just cannot pack enough pixels on a small, inexpensive consumer project that will look good when used to project. I'm not going to spend $150 on something that is not going to give the quality of something cheaper.
As for loss of light. I don't see why you would lose so much light comparitively. Simply focus the light and limit the size of the light enclosure so that it is focused through the LCD. It shouldn't matter what aspect ratio it is. Just a matter of backlight design. I had planned on using a theator quality lens that I saw on one of the major DIY sites instead of a Delta V, so that I can accomidate a larger LCD.
But like I said. I want to display 16:9 and not have it letterbox and distort on me. Nordic, if you get one of these, please post your results with ease of disassembly and picture quality. 🙂
Personally, I don't like the idea of these small LCD's at all. Espescially these ones that cost $200. If you want to make a projector for $60 or so, that's one thing, but $200 for something with such a low rez is pretty bad. And that doesn't include the costs of the lamp, lenses, bulb, etc. If your a DJ, and you want to project digital effects for parties, or something along those lines, then it's cool. Otherwise, I don't know why anyone would want to watch movies or play games on such a lousy pixelated picture spread out on a giant screen- let alone pay hundreds of dollars for it.
But some people don't mind, and I guess that's cool. For myself, if a cheap analog TV looks better, I'd rather just sit closer to the TV. Heck, you'd probably get better results from a 100" TV project.
But some people don't mind, and I guess that's cool. For myself, if a cheap analog TV looks better, I'd rather just sit closer to the TV. Heck, you'd probably get better results from a 100" TV project.
To add to that, I think paying so much extra for a widescreen panel is TOTALLY pointless. Think about it. Two routes:
A) A widescreen panel w/ 250 H lines or less. TERRIBLE. Your DVD's will suffer because your losing so many lines anyways. There's something fishy about the V resolution on these things too. Somebody posted the details, but from what I remember, they're not a true 900 lines or whatever it claims. That makes a lot more sense too. Why would a panel have so many V lines and so little H lines?
B) A 3:4 640x480 panel with DVD's in letterbox mode. You'll actually have a much BETTER widescreen picture than you would w/ the widescreen LCD. Remember, you'll only be projecting a 16:9 window within your 3:4 panel.
Think about it people. Using a 3:4 panel with a DVD in letterbox mode is going to project a widescreen image just like the widescreen panel would. Absolutely no advantage to these 16x9 panels.
FYI, DVD's are encoded at 720x480.
A) A widescreen panel w/ 250 H lines or less. TERRIBLE. Your DVD's will suffer because your losing so many lines anyways. There's something fishy about the V resolution on these things too. Somebody posted the details, but from what I remember, they're not a true 900 lines or whatever it claims. That makes a lot more sense too. Why would a panel have so many V lines and so little H lines?
B) A 3:4 640x480 panel with DVD's in letterbox mode. You'll actually have a much BETTER widescreen picture than you would w/ the widescreen LCD. Remember, you'll only be projecting a 16:9 window within your 3:4 panel.
Think about it people. Using a 3:4 panel with a DVD in letterbox mode is going to project a widescreen image just like the widescreen panel would. Absolutely no advantage to these 16x9 panels.
FYI, DVD's are encoded at 720x480.
I would think a 7" LCD would work pretty good since it's a 16:9 ratio.
If you use a 640x480 projection panel you'd only get about 360 pixels horizontal at 16:9 wouldn't you.
This is to play around anyway.
Once I find a better panel that's a much higher res, then I'll build a MH setup. But for now I'm just going to find a cheap panel to go with my projector.
If you use a 640x480 projection panel you'd only get about 360 pixels horizontal at 16:9 wouldn't you.
This is to play around anyway.
Once I find a better panel that's a much higher res, then I'll build a MH setup. But for now I'm just going to find a cheap panel to go with my projector.
Lifter said:
Well, using a smaller LCD obviously makes for an overly all smaller projector that, in theory, should have similer quality. It just depends what kind of budget you are on,a nd what you are using said projector for. For DVD/TV watching, I think an LCD best suited to those tasks would be better, would it not? I guess it lies soley in the quality of the LCD that you get. And not everyone has $500 to build a projector. Personaly, I'm on about a $250-300 budget (for everything), and thats it. But I'm trying to think and research ahead and get the best LCD for the money.
If I could find a decent 15" LCD for around $150, sure I'd get it. I'm hunting around seeing if any of my friends has an old one they'd part wth. I saw someone used an I-O Data LCD, but for the life of me I can't find it anywhere on the net.
GrauWolf sorry about the caps.
*** you probably know STN technology transmits less light than TFT technology and beleive me i saw the diference between the Citizen ST-555 (2,2" STN pocket tv) and Casio EV-550(2,5" TFT pocket tv.Yes i agree that the quality is low and it does not worth spending 150$ unless you buy them second hand for about 20-30$.In my country you can get them that cheep second hand.
Another thing is that i do not know how to make a light beam suitable for 16:9 lcd!All the theory i know until now does not allow me something like that.If you could give some info that would be great.16:9 is much better than 4:3 for movies but as long as you can make the light suitable.The OHP rute with the big panels makes big cases but better quality!I thing that a small design with good quality will be the real DIY LCD projector and everyone likes that,i thing.What i am doing this time is reading a lot of theory and then go on to the next atemt.So far i put together 3 designs of mine and they were not that good.I had problems with IR hit etc.Also i did not have the time until now to read all the posts on this forum and maybe all the answers are there.I will try to find some time for that.If i manage to built a projector i will be very huppy.
I think this is what we need but it is expencive!
*** you probably know STN technology transmits less light than TFT technology and beleive me i saw the diference between the Citizen ST-555 (2,2" STN pocket tv) and Casio EV-550(2,5" TFT pocket tv.Yes i agree that the quality is low and it does not worth spending 150$ unless you buy them second hand for about 20-30$.In my country you can get them that cheep second hand.
Another thing is that i do not know how to make a light beam suitable for 16:9 lcd!All the theory i know until now does not allow me something like that.If you could give some info that would be great.16:9 is much better than 4:3 for movies but as long as you can make the light suitable.The OHP rute with the big panels makes big cases but better quality!I thing that a small design with good quality will be the real DIY LCD projector and everyone likes that,i thing.What i am doing this time is reading a lot of theory and then go on to the next atemt.So far i put together 3 designs of mine and they were not that good.I had problems with IR hit etc.Also i did not have the time until now to read all the posts on this forum and maybe all the answers are there.I will try to find some time for that.If i manage to built a projector i will be very huppy.
I think this is what we need but it is expencive!
Attachments
The quality of small in car displays is not that bad. You are all saying how its horid and what not, but have you guys tried it? I had a good 5 foot image i was pleased with using only a delta iv and an unmodified lcd screen. I actually used the lcd backlight to project. Came out nice... I am sure all the guy saying it sucks also want a 200" image... That all i have to say.
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