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(99 votes) Published: Mar 01, 2007 9:25 p.m. In 6 Favorites Lists Viewed 368 times
Don’t know if anyone has heard of these before, but they are pretty rad.
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 more info on parts, part’s numbers, vendors and application notes.
Part: 10mm Diffused LED
Vendor: HB Electronic Components
Average cost: $0.20 avg per LED
Notes: Cost reductions for larger quantities. Comes in red, blue, amber, white in both diffused and clear. Diffused works better than water clear for the Throwie application. HB has even created a Throwies packs page with deals on 10mm LEDs and lithium batteries!
Part: CR2032 3V Lithium Batteries
Vendor: CheapBatteries.com
Cost: $0.25 per battery
Notes: Cost reductions for larger quantities. With the 2032 Lithium batter, depending on the weather and the LED color, your Throwie should last around 1 -2 weeks.
Part: 1-inch wide Strapping Tape
Vendor: Your local hardware store
Cost: $2.00 for one roll
Notes: One roll will make many throwies
Part: 1/2" Dia x 1/8" Thick NdFeB Disc Magnet, Ni-Cu-Ni plated
Amazing MagnetsVendor:
Cost: $13.00 per 25 magnets
Notes: Cost reductions for larger quantities
Part: Conductive Epoxy
Vendor: Newark In One
Cost: $32.00
Notes: The epoxy is optional.
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 touching the positive terminal (+) of the battery and the shorter LED lead, called the cathode, should be touching the negative terminal (-) of the battery.
Note that the positive terminal on the battery has a larger contact surface than the negative terminal. The positive terminal extends around the sides of the battery. Don’t let the cathode lead of the LED accidentally touch the positive terminal of the battery. This will create a short and cause the LED to function improperly.
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. Keep the tape very tight as you wrap.
The LED should not be flickering.
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 stuck to a ferromagnetic surface, dont pull on the LED throwie. Apply a lateral force to the magnet and slide it off the surface while lifting it with a fingernail or tool.
Remember to keep the magnet away from conventional hardrives, credit cards and other data storage devices.
The LED throwie is ready to be tossed onto a ferromagnetic surface. Practice tossing your throwies on your refrigerator. Work on your accuracy and your own personal technique. Every throwie wont stick every time, but if you toss them gently, they will stick eventually. Get them up high and in large quantities for greatest enjoyment.Now you can go out into public places and throw them on trains, signs, walls, and so much more. And don’t worry about getting busted. Throwies aren’t permanent, they only last a few weeks at best. Try to get them as high as possible for maximum viewing range and to keep them from being stolen. have fun!
Mar 01, 2007 9:42 pm - I don’t care if it is copied, the pictures are so pretty. If you hook a ic555 clock circut or just a pic555 timer you could make them flash too. 555 clocks, the chips, just use pins 1,2 as the imputs and 3,5 as the outputs, their rather cheap
Mar 01, 2007 10:01 pm - who care if its c/p, without it, you would still not know about it. It does not make this any less useful. So stop bitching about c/p.
who care if its c/p, without it, you would still not know about it. It does not make this any less useful. So stop bitching about c/p.
There’s a place for letting people know about a website. It’s called the FORUMS. Turning some other page into an egg, and claiming it as your own work is bullshit. You’re not giving credit to the people who actually did the work.
Some of us actually spend a lot of time on our eggs. It takes time and effort. You come along and try to pull a C/P to get something for nothing. What really pisses me off is some C/P’d eggs made it through to the directory. They weren’t caught in time.
Well, I’ll make sure this gets dropped like the hot bag of crap it is. Don’t C/P.
Mar 01, 2007 10:45 pm - why did you have to c/p this, i was gonna rate u a 5, but now i geuss i have no choice but to give you 0*,why did you haf to copy?
Mar 01, 2007 11:13 pm - Yes, not only is it a copy and paste. There is some one else a while back who also copied and pasted this. So you didn’t even have any originality for copy and pasting the idea. In the end, zero stars.
ar 02, 2007 4:55 am - Actually 95% of everything is c/p’d on this site, except for expoing eggs, we are not the inventers of this stuff we got the idea from someplace other than our heads!
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