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LED Throwies

LED Throwies

Developed by the Graffiti Research Lab a division of the Eyebeam RND OpenLab, LED Throwies are an inexpensive way to add color to any ferromagnetic surface in your neighborhood. A Throwie consists of a lithium battery, a 10mm diffused LED and a rare-earth magnet taped together. Throw it up high and in quantity to impress your friends and city officials.
step 1Materials List
LED throwies consist of only a few inexpensive parts and can be made for ~$1.00 per Throwie. You can reference the parts list below or download the attached spreadsheet for…

step 2Test the LED
Test your LED to determine color, brightness and functionality. Pinch the LED legs, or leads, to the battery terminals. The longer LED lead, called the anode, should be tou…

step 3Tape the LED to the battery
Cut off a piece of 1-inch wide strapping tape approximately 7-inches long. Tape the LED leads to the battery by wrapping tape 2-3 times around both sides of the battery. Ke…

step 4Tape the magnet to the battery
Now, place the magnet on the positive terminal of the battery and continue to tightly wrap the tape. The magnet should be held firmly to the battery. If the magnet is s…

step 5Toss your Throwie
The LED throwie is ready to be tossed onto a ferromagnetic surface. Practice tossing your throwies. Work on your accuracy and your own personal technique. Every throwie won…

step 6Plan a campaign
Now, find a building or structure that will attract the magnets, form a crew, wait until night, and get some throwies up. If you do it around a crowd of people, they will p…

step 7Other applications and upgrades
”’Other applications:”’ Other than tossing it, you can also use your LED throwie to write in the air with light while taking a long exposure flick. You can put them on…

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