DIY Dazzling Laser Light Party Ball
Here’s a challenge for you: stuff over a dozen red lasers and a rechargeable lithium ion battery inside a tennis ball. Oh, and also a microcontroller and infrared port to control patterns from afar. To make your own, the author has constructed a high quality tutorial so you can build your own party ball. You’ll need a soldering iron, a Dremel/rotary tool, wire cutters, and a few other craft items.
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[original story: Hack n Mod]