Friday, December 4, 2020

Document camera reflectors

One of our primary classes has a small set of Osmo toys that they enjoy. It's basically a mirror that hands over your iPad that reflects the front camera down so the app can "see" what's on the tabletop. This concept really took off in the spring when most classes went virtual; a simple setup to let students and teachers show paperwork without having to move their webcam or computer.
This was a project that tinkerers and makers really ran with. My favourite was using CDs as the reflective surface and a taped pencil as the stand:


Other projects had small mirrors being held in place by 3D-printed plastic, laser-cut cardboard, or even cardstock. Each had their place in supporting whatever scenario you found yourself in. You may want a disposable solution, or an easy-to-reproduce product. Perhaps a flat-packable product to slip inside a book or a robust, hardy model to prevent breakage.
Some had adjustable hinges to fit different thicknesses of monitors and laptops. Careful measuring of thickness would allow makers to create different models for distribution.
For my school, I opted to make one universal-fit model. We are a BYOD school so there are dozens of computer types and thicknesses. I also needed it cheap and quick and easy to produce since I wanted students to take them home in case they need them should we go virtual.
Ours ended up being about 2 grams of 3D-printed PLA plastic (2 cents), a 1" square mirror sourced from Amazon (13 cents), and a clothespin (7 cents). For about $66 I've been able to produce enough for 300 students and teachers!


For more info and suggestions take a look here.