June 2011
Intermediate to advanced
320 pages
6h 39m
English
Content preview from 15 Dangerously Mad Projects for the Evil GeniusBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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CHAPTER 5Balloon-Popping Laser Gun
CONTINUING WITH THE GUN THEME, this project will allow the Evil Genius to shoot tin cans off a wall and burst balloons with a tiny but super-powerful laser gun, essentially your stock sci-fi “ray gun” (see Figure 5-1).
Well, actually, as you might have come to expect from the Evil Genius, there is a bit of trickery going on here.
The gun itself is just a low-power laser, and if you wish, you can simply use a standard laser pointer. The clever bits are in the “can” or the “balloon popper.” Both of these have a sensor that detects the laser light and an electronic circuit that turns on a high-power transistor. ...
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