Lego Barcode Reader

barcode reader

"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.

The list of tasks, the hardware of the Barcode Scanner must be able to perform:
_ moving the sliding carriage and the barcode label (using a gear) in both directions by a motor
_ detecting the start position of the sliding carriage by a switch
_ detecting the position of the sliding carriage with a rotation sensor
_ measuring the amount of reflected laser light and detecting black & white bars with a light sensor
_ powering the laser on and off

..."

lol... Very cool.

I'd like to have a barcode scanner for my Bookshelf project. And I have a couple Mindstorm's around...

And there's something hot about building a laser into a lego project. ;)

(via Make: - LEGO barcode reader)