| 18wheeler |
| I got this LCD screen really cheap. It was for diebold ATM mechine. from every bit information I can collect, I think it uses a 12.1" sharp LQ121S1DG11 screen, and has a seperated controller with a VGA port, which means easy disasmble. It requires a 12V DC power but I have never seen a connector like this (attached picture). So anyone can help me to find out its polarity? so I can use wires to connect it to my computer's 12V :D |
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| Video Freak |
| Hummm ya know it looks familiar But I cant recall where I have seen that, can you take the Item apart to see the wire colors?, remember red is positive and black is Negative. Hope that helps some. |
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| 18wheeler |
the connector itself soldered on the PCB board directly. But there are 12V out Red/black wires on the board, so I used a tester to find out which prone is connected to red. fortunately after I connected power, it worked.
The LCD itself is 800x600, works at 72Hz. after play with it for a while, it works fine now. the display is corner to corner, no pixel dancing anymore, and I can adjust brightness and contrast by Powerstrip. But there is onething not right: the color. the color lask details. Seems that the number of color is too low. When I display a picture, there are blocks of colors without transition between them. Looks like when you set the windows color to 256 colors insead of 16bits. I believe this screen can do better than that, I just need to find out how. Could anyone give me a hint?
btw, my OS is windows XP. The system takes the monitor as MS "default monitor". And I just installed Powerstrip ( don't know how to use it in full power yet.) |
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| eebasist |
| I wouldnt be suprised if it is only 256 or 512 colors if this was sourced for use in an ATM....its cheaper for Dibold to buy lcd controllers capable of a limited color field....this panel is rather common in laptops and is capable of more colors thatn 256/512 if mated to the appropriate controller |
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| 18wheeler |
I actually set it to 256 color, but there was no display at all at this setting. I would like to try something like 512, 2M, or 16.7M color, but these options are not available.
when I open the color wheel in a photo editing software, the color is not continouse. from what I saw, I believe it(the controller+screen) has more than 256 color (but not 16bits colors neither). now I need to find out a way to display more color. |
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| 18wheeler |
| I checked the color wheel again. It seems to me that some groups of color are not display right on the screen. I will attach some pictures later when I get chance. |
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| eebasist |
| Can you point some of us in the direction of where you got this screen? It would be an interesting toy to play with |
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| 18wheeler |
| quote: | Originally posted by 18wheeler
I checked the color wheel again. It seems to me that some groups of color are not display right on the screen. I will attach some pictures later when I get chance. |
It turns out that when I was checking up the screen, I didn't put the signal cable (the flex brown cable between controller and the panel) back properly :o . So some signal were not transfered right. After re-sit the cable, everything works fine now. I have to set the color to 32bits to fully show the details. It is a wonderful little screen.
eebasist: I bought this screen from eBay. I will email the seller where he get it. |
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| Video Freak |
| So the monitor came with everything Uncluding a VGA input? Only thing you had to rig was a power supply, how much did you pay for it? This seems interesting, cant wait to see if the seller knows of more, or has more of them. |
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| 18wheeler |
just got an email back from the seller:
| quote: | | It was actually given to me by a family member who works for Diebold. It was one of their screens that just never made it into an ATM machine.. Ill see if I can track down some more |
It has the VGA port and a 12V power connector. I paid $50 + shipping. Very reasonable. I will post some pictures later. |
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| 18wheeler |
Here is a picture of it on my desk:
with case open:
it is very easy to take apart and put on an OHP. Took me 10' to take it apart:
and after removed a couple of light difusers (is the darker one a polarizer?)
I got a 'naked' lcd panel:
Now, my windows desktop on OHP:
and the Matrix reloaded trailer:
Another one:
Seems overall brightness is not enough, especially on the top of screen:
More pictures are here . the screen is a "dapper" projection screen in a windowless conference room. all lights were off. F2.0, shutter 1/4s. projected images were 3-4 f wide.
Now, I have put it back together. It will be my monitor in the office for a while until I get the better light source. ( I got 575W DE bulbs from YWH, but need to wait for the ballast :( ) |
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| Video Freak |
| Looks great But honestly when did ATM's come with Full color lcd screens,? All of the atm's around here have small 6 inch monocrome lcd screens. |
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| 18wheeler |
| quote: | Originally posted by Video Freak
Looks great But honestly when did ATM's come with Full color lcd screens,? All of the atm's around here have small 6 inch monocrome lcd screens. |
The atm I am using has a tiny color lcd :).
search for 'diebold atm' you will see a bunch, or 'panobrite' for the one that looks really like it. |
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| Lifter |
| quote: | Originally posted by 18wheeler
just got an email back from the seller:
It has the VGA port and a 12V power connector. I paid $50 + shipping. Very reasonable. I will post some pictures later. |
That is fantastic. One of the best come-ups I've heard in a while. With the VGA input, that is a full-fledged LCD monitor for $50. Good job. |
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| Lifter |
| I found a datasheet for the model you listed and it does say that it is meant for banking terminals. Its 256k colors and has a 300:1 contrast ratio. Very impressive for what it is. |
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| Property |
| According to 18Wheeler he's getting true color not 256k |
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| janneman |
The power connector is from Molex. Not easy to be in small quantities, but they do give out samples (at least the distributor in The Netherlands).
Jan Didden |
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| LaserLine |
| Do you think we could get some close ups on the circuit/controller boards for the lcd? |
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| phaze5 |
| If you could get more I would be interested in one:) |
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| gauchito76 |
Hey 18wheeler! cool LCD!
btw - noticed your wet lab protocols in the background..
didn't know a fellow biology dude was on here!
yeah.. pour that supernatant.. ;) |
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| 18wheeler |
| quote: | Originally posted by gauchito76
Hey 18wheeler! cool LCD!
btw - noticed your wet lab protocols in the background..
didn't know a fellow biology dude was on here!
yeah.. pour that supernatant.. ;) |
I should have blured the background. I knew it would reveal my identity :rolleyes: :) ;) |
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| Video Freak |
| BIOLOGY rockssssssssssssssssssssssss............. 18 what do you do? |
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| gauchito76 |
yep.... well you know, the protocols and the latex gloves
just gave you away...
what kind biology? I did cell bio and bioinformatics for a while
as a research assistant before grad school, now I'm doing PhD in computational biology/bioinformatics.. sure miss the wet lab.
Some comp bio people are really anti-wetlab.. which I don't
really agree with. They need to realize where the data comes from!
ok.. end rant.. |
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