And if you happen to be in my real-life friend circle, you’re more than welcome to borrow mine for a while, which is better than having it collect dust in my garage. In case you’re interested in finding your own overhead projector, I did a quick Craigslist search and see them posted in the $25-$80 price range, but I bet a little searching could find you something for less money. Overhead-projector as a noun means A projector that projects onto a screen or surface the image on a transparency placed over the projector's light source. As an artform, working with the tangram shapes was like painting with light and color, while making compositional choices. It was fun to play with something new, and we both enjoyed exploring the mechanics of this archaic tool from Stanford’s past. The dim lights in the room were calming and helped focus my child’s big afternoon energy like a cup of tea can focus mine. This art project was wonderful in so many ways. We talked about how the projector reverses images, so you won’t see a mirror image of what exists on the glass plate. The walls in this room are painted dark grey, so I taped two sheets of 18″ x 24″ paper from Discount School Supply to the wall, and it made for a perfect screen.
I pulled the curtains in the room shut, and the overhead projector’s bulb did a great job illuminating the wall. I have a huge collection of transparent tangram tiles that I picked up at Resource Area for Teaching (RAFT), but if you click on this link it’ll take you to Amazon where you can order these shipped straight to your home. N had fun adjusting the height of the light and then made various arrangements of shapes, both abstract and realistic. I plugged it in, flipped open the light, and spread out a collection of tangram pieces to play with. “If we plug it in, what do you think it might do?” There are some buttons, so you can turn it on and off. If I turn this one, this piece moves up the pole. And I see these knobs, so they probably turn. Rather, I put the projector in a place where she could easily see it from multiple points of view and then our conversation sounded something like this:Ī box with a long, tall pole and a plug.
No other information is shared, and the process of discovery can build a great deal of enthusiasm around an experience. The idea behind the game is to unpack the qualities of a mysterious object based solely on what you can see.
My daughter had never seen one of these before, so we started off with an open-ended game in object-based looking that I learned in graduate school. Well, I finally pulled it out and it turned out to be a perfect rainy day art project. I wandered into the dusty space about a year ago and walked out with something everyone needs: an overhead projector for just $5. Right, you have one, don’t you? And then it moved to my garage where it continued to collect dust for another year. Still reading? Great! Let's start building.My husband works at a university and the collector in me was overjoyed to discover that there’s a little-known department on campus that sells surplus property from departments that no longer need old projectors, desks, and reams of paper.
The hardest part of this build was the software, because I couldn't find one that would fulfill my expectations: - FREE - NO BANNER - WinXP x32 / Win7 圆4 / Win8 compatible - digital zoom compatibility - full screen mode - save picture - portable (no installer) So I had to write my own software, (don't worry, I'll give it to you, for free) Edit 1: The source code for my software is available on GitHub. USB cameras are now quite cheap (my " Canyon CNR-WCAM820HD" was around 30€) so why not just build your overhead/document camera ? Actually the build part is super simple, even more if you use for the base an old overhead projector, which makes this camera even better, because you can light the object underneath and possibly make some internal structures of the object visible. But unfortunately they aren't so cheap! Alternative to them is a old school Opaque projector, overhead projector and but they are becoming rare, saving the projection to digital format is annoying (take a photo), and also the lamp generates quite a mount of heat. Document camera or also called overhead camera, is a great tool to have in class, to better display some small 3D objects or documents.