Upon reset/startup - the Arduino will read the amplifier's 12v output, but will not send a command to the projector. This is to ensure the projector is not randomly turned on or off when the Arduino ...

I had a need to digitize 2,000 35mm slides. Flatbed and slide scanners were not an option because they're too slow, scanning at a rate of 5 slides in ten minutes. I reasoned that with a slide ...

An impressive persistence of vision laser projector built using an Arduino and a hard drive case has been demonstrated by a DIY enthusiast. The device uses a circular array of rapidly spinning mirrors ...

You know how when you were a kid, the box something came in was almost as fun as the toy itself? Well, that doesn't have to change as you get older -- provided you've retained that creative spark. Ben ...