Instructables

Cheaper document camera*

Document cameras are expensive and don't have the field of view I was looking for. One day, looking at the back of the LCD projector I noticed it had a video input... This led me to my old digital camera that had a video output!

What you will need:
1. Digital camera with video output
2. LCD projector with video input mounted to ceiling
3. Cable to connect the two (1/8" mini jack to RCA)
4. Lots of batteries for the digital camera (if you have a plug... all the better)
5. 1/4-20 bolt/machine screw 0.5"-0.75" long
6. Three old yardsticks
7. Metal piece with 90 degree bend or the like
8. Pop riveter & rivets or equivalent

*(this is only a cheap document camera... if you already have the LCD projector)
 
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Step 2: Ceiling set up

I needed to hook it to the ceiling but it also needed to move if I needed to change something... so not permanent. Also needed to be close enough for the camera cord to reach the projector. So I made this set up with:

two yardsticks
one plastic plate/piece
piece of metal with 90 degree bend and some hole in it
Some pop rivets
and finally some short bolts (1/4-20 is what you will need to screw into the bottom of the camera)

Nothing is fixed everything is just hanging there. wedged under the edges of the ceiling tiles.
admin5 years ago
This project looks awesome but there isn't enough documentation of you actually making it to be a full Instructable. There are two things which you could do. 1) If you happen to have images of you making your project you can create some more steps, add those additional photos into your Instructable and then republish your Instructable. 2) If you don't have any more pictures of you working on your project, that's ok too. That just means that your project is better suited to be submitted as a slideshow. Your images are already in your library, and you can use the same text that you have already written for your Instructable so it should only take a few minutes to create your slideshow and show the world what you made! Thanks for your submission and let me know if you have any questions along the way.
philip422 years ago
I'd go with a webcam and computer hooked up to the projector's VGA input - that way you'll have far higher resolution than an NTSC video input.

Check out my recent instructables for approaches using a desk lamp and a swing arm lamp.
pepotte4 years ago
step 1 says camera goes into computer and from there to the projector, but you actually bypassed the computer and connected camera directly to projector.  That is good since it simplifies matters, but then, don't you lose the ability to zoom in on a document & make the type readable on the screen?
riglertke4 years ago
As I was reading I was thinking that a video camera with a remote would be awesome. You could use it to zoom in on things and you could hook it directly into the LCD without having to run it through you computer.
Derin5 years ago
our school had the exact same projector mounted in every single classroom
bigtreehouse (author)  Derin5 years ago
I bet your district mounted them... My school didn't.
Then I win.It was the school.
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