Who hasn’t thought about turning a 1950s slide projector into a digital projector? [Matt] did, but unlike most of us, he actually did it. [Matt]’s friend [Angus] found an old, single-slide ...

To prepare an optimal presentation for our primary lecture hall: Gold Biosciences A2B70, or any of our other classrooms, set your presentation for a widescreen projector.

The digitizizer is based on a Kodak carousel slide projector. It’s fitted with LED strips instead of the original light source, which are used to illuminate the slides themselves. An Arduino ...