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LEGO barcode reader

LEGO barcode reader

Barcode Reader SmallComplete HOW TO and source code for making a barcode scanner out of LEGOs. The Barcode Scanner uses standard LEGO parts with two exceptions. The first is the laserbrick, a selfbuilt LEGO brick with a modified laser pointer connected to an output of the RCX. The second part is the barcode label from a LEGO box.Thanks Douglas! Link.

DIY Camera Obscura

DIY Camera Obscura

Camob
How to make the sunrise in your bedroom every morning. Many artists have used the Camera Obscura over the years, now make your own. – an optical experiment easy to do, but which, in spite of its simplicity, is able to give you a continuous marvel. What you have to do is simply mount a lens on the bedroom window. In this way, when you wake up in the morning, you will admire the outside scene projected on a wall of your bedroom. Link.