Searching for a Cheap Overhead Projector? 26
stinkjones asks: "I recently found a project on
Hackaday, which I found very interesting. It was linked to
Tom's Hardware, and involved a massive, and cheap, projector. I have an LCD projector, but this seems like a great project with a pretty cool result. I already have an LCD that's perfect for the job but overhead projectors are hard to find. Retail they are around $500 new or a lot more, and if you can find them used they have a huge range of prices. Does anyone know where to find a cheap one?"
Less than $200 new (Score:4, Informative)
Or you can JFFI [google.com],
University (Score:5, Informative)
You could probably find an overhead projector there.
Don't use an overhead (Score:5, Informative)
If you instead build your own enclosure, you can do some neat stuff. First, you can show the full 1024x768. Also, you can use a metal halide bulb, which typically have a clean white color and put out less heat for the amount of light produced. And metal halide bulbs last anywhere from 8000 to 20,000 hours. You will also be able to get a high-quality lens for good focus across the whole display, something a cheap overhead might not be able to do.
Go to http://www.diyaudio.com/ [diyaudio.com] and visit the Moving Image forum. There are thousands of posts containing ideas, plans, calculations, optics sources, and photos. I'm in the process of building my own projector with a 400W 6500K metal halide bulb, here's a photo of the image projected by a test mockup: http://lserve.homelinux.net:7780/diyaudio/lightso
LumenLab (Score:3, Informative)
The money is used by the fellow who runs the board. He builds projectors, trys different pieces and part out, and most immportantly, gets custom lenses made for their community.
Hope this helps,
Brett