Hello,
I'm still pretty new to all this. I have a good OHP (Dukane 4000) and now I'm looking for a good panel. If anyone would like to sell a panel with a resolution of 800x600 or higher and 16.7 million colors, please contact me. My email is atardiff@gonzaga.edu.
I'm still pretty new to all this. I have a good OHP (Dukane 4000) and now I'm looking for a good panel. If anyone would like to sell a panel with a resolution of 800x600 or higher and 16.7 million colors, please contact me. My email is atardiff@gonzaga.edu.
good panels
I still see a lot of good panels on eBay for $75 - $150. You do have to look up the specs on the web to verify what the sellers claim, and there are plenty of old low-res panels to avoid.
Another option is to consider a 14 or 15" LCD monitor ($150 - $200, respectively). A stripped 14" monitor panel would probably fit okay on any OHP. If your OHP light surface is big enough, then you might be able to use a 15" panel (9" by 12"). The newer LCD monitor panels have 2-3X higher contrast ratios, and faster response times than the medium priced OHP panels. (14" are almost all 50 msec, 15" are mostly faster.) But you also have to factor in the price of a video-to-VGA scan converter if you want to watch TV or DVDs. And you also get to have the fun of stripping it and making a nice box for it, so it looks like a big fat OHP panel.
I still see a lot of good panels on eBay for $75 - $150. You do have to look up the specs on the web to verify what the sellers claim, and there are plenty of old low-res panels to avoid.
Another option is to consider a 14 or 15" LCD monitor ($150 - $200, respectively). A stripped 14" monitor panel would probably fit okay on any OHP. If your OHP light surface is big enough, then you might be able to use a 15" panel (9" by 12"). The newer LCD monitor panels have 2-3X higher contrast ratios, and faster response times than the medium priced OHP panels. (14" are almost all 50 msec, 15" are mostly faster.) But you also have to factor in the price of a video-to-VGA scan converter if you want to watch TV or DVDs. And you also get to have the fun of stripping it and making a nice box for it, so it looks like a big fat OHP panel.
I have trouble finding a good model with a high resolution on ebay. I bought one before, but I got burned. It was broken.
So, there's a way I can actually strip an LCD computer moniter and put it onto an overhead projector? Can anybody tell me more about this? I searched the forum and found some related posts, but everyone seems to know what they are doing, while I don't. I can't figure out what they are talking about. I'm still really knew to all this.
So, there's a way I can actually strip an LCD computer moniter and put it onto an overhead projector? Can anybody tell me more about this? I searched the forum and found some related posts, but everyone seems to know what they are doing, while I don't. I can't figure out what they are talking about. I'm still really knew to all this.
stripping a monitor panel
You can buy a new or used LCD monitor (even one with a bad backlight), then take it apart VERY carefully. They have many tiny philips head screws holding eveything together. Get it apart to the point you can remove the backlight and various light diffusers and spreader sheets behind the LCD. You probably will have to disconnect one or more FFC cables (Flat flexible, look like an ultrathin printed circuit on thick mylar.) They have a piece that snaps into a connecter to hold the end of the cable against the contacts. You get to carefully pry that piece out. This lets you lift any PCBs behind the backlight off the panel. They have many other flexible cables that connect them to the actual LCD glass. Those are flexible enough to let you reposition the PCBs out of the way. If you need an FFC extender to reconnect the PCBs, you can buy various lengths and number of conductors at lumenlabs.com, diyprojector.com, or diybuildergroup.com for just a few dollars.
Figure out how to mount the LCD in a frame with all the boards reconnected and stable. (ie. not flopping around) Include a Lexan-XL sheet to protect the LCD from UV, in your frame. (Very tough material good for physical protection, too.)
I have attached a text file with some LCD monitor info. I just stripped a proview 15" I got from pcclub.com for $200. It just takes a lot of careful tiny steps, so you don't break anything.
You can buy a new or used LCD monitor (even one with a bad backlight), then take it apart VERY carefully. They have many tiny philips head screws holding eveything together. Get it apart to the point you can remove the backlight and various light diffusers and spreader sheets behind the LCD. You probably will have to disconnect one or more FFC cables (Flat flexible, look like an ultrathin printed circuit on thick mylar.) They have a piece that snaps into a connecter to hold the end of the cable against the contacts. You get to carefully pry that piece out. This lets you lift any PCBs behind the backlight off the panel. They have many other flexible cables that connect them to the actual LCD glass. Those are flexible enough to let you reposition the PCBs out of the way. If you need an FFC extender to reconnect the PCBs, you can buy various lengths and number of conductors at lumenlabs.com, diyprojector.com, or diybuildergroup.com for just a few dollars.
Figure out how to mount the LCD in a frame with all the boards reconnected and stable. (ie. not flopping around) Include a Lexan-XL sheet to protect the LCD from UV, in your frame. (Very tough material good for physical protection, too.)
I have attached a text file with some LCD monitor info. I just stripped a proview 15" I got from pcclub.com for $200. It just takes a lot of careful tiny steps, so you don't break anything.
your gonna have to read more.
once you take off the plastic casing, you will probably have an aluminium type metal casing around the lcd, take out any screws you see and then start bending back any metal tags and taking of any tape etc. This should allow you to take out the back metal cover.
under this is a long flurescent tube and perspex with some filters and stuff (this is a backlight setup, it allows you to see whats on an lcd monitor), you need to lift all this stuff out, so you have an lcd panel that still works, but is transperant.
you can only do this to a monitor that has electronics that are either not behind the lcd glass or are easily moved. there is a sticky thread here "DIY compatible monitor list", these are easily stippable.
good luck.
once you take off the plastic casing, you will probably have an aluminium type metal casing around the lcd, take out any screws you see and then start bending back any metal tags and taking of any tape etc. This should allow you to take out the back metal cover.
under this is a long flurescent tube and perspex with some filters and stuff (this is a backlight setup, it allows you to see whats on an lcd monitor), you need to lift all this stuff out, so you have an lcd panel that still works, but is transperant.
you can only do this to a monitor that has electronics that are either not behind the lcd glass or are easily moved. there is a sticky thread here "DIY compatible monitor list", these are easily stippable.
good luck.
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