My LED Throwies




Intro: My LED Throwies

This is my version of the LED Throwies project. I'll be using different LEDs and magnets. I just thought it would be nice to post it so everyone could see how it differs from the real, original Throwies. All credit, etc. goes to Graffiti Research Lab, a division of the Eyebeam R&D OpenLab.

Step 1: Materials

Here is what I ordered for my first Throwie set:

100 CR2032 3V Lithium Batteries
100 "Super-Brite" LEDs (50 Red, 50 Yellow)
50 Magnets (1/2" Dia x 1/8" Thick NdFeB Disc Magnet)
Packing tape Roll

Here is what I have concluded about my first set of ten throwies:

-The magnets seem to loose a little of their strength when they are attached to the battery.
-The "Super-Brite" LEDs ARE way bright but,
-My LEDs were not diffused, so they don't "glow", they just "point-shine".
-Packing tape is hard to strip down into battery-width strips.

Step 2: Complete Throwies

You can see how my LEDs look rather large compared to others. I ordered "Super-Brite" to see how they differed. They are a lot brighter (probalby reduces glow time) but they are not diffused! Big mistake. Now all of the light is projected just through the front of the LED, while I want it to come out of all of the plastic around the LED.

Since I only ordered 50 Magnets (the most expensive part) I decided to figure out another way to get these to stick/stay up somewhere. On my college campus, we have TONS of big willow-like trees that have no leaves right now. I decided if i out some kind of loop on a Throwie that it might catch on part of a branch or something. Below you can see I just wrapped some 550 military cord around the LED. I could never get it to catch anything. I will try fishing line this week and see if it is any better.

Here is what I learned over all from my first Throwing:

-Check a building first to make sure it's not a Engineering test lab inside. :|
-Our campus street lamps are non-magnetic.
-More people than you think noticed the Throwies on the stop light pole.
-Obviously a production line is easier. One person tape, one put LED on battery, then a magnet taper.
-Blinking LEDs will be WAY more noticable and could cause some real stress if Thrown in the right place.
-Only some lights from a auditorium stage are magnetic.
-A stratigicly placed red LED looks like a "hidden" camera.
-Red is cooler than Yellow in every aspect.
-My LED Throwies happen to be very durable. (miss-threw probably 15 times on the streetlight straight up and didn't always catch it. It fell on the asphault. The LED wires may bend, but with a good taper, it will generally stay complete through a lot of abuse.
-Stanbys want to throw them. :)



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    138 Discussions


    4 years ago on Introduction

    You nan buy cheap magnets at in Europe


    12 years ago on Step 2

    Does anyone know where I can get cheap led lights?

    I found a website but am not sure how trust worthy the site is to purchase from ( Radioshack has some, but they are more expensive.

    I'm looking to design a costume with a bunch of these led lights in it so I need to figure out how to affix the lights to clothing. But the first step is finding these lights cheaply!

    Any leads/help/suggestions would be greatly appreciated!

    14 replies

    Reply 10 years ago on Introduction

    To get them cheap, buy them in bulk. Ebay is great for cheap, bulk LEDs from china.


    Reply 10 years ago on Introduction

    This reply is almost 2 years after your comment, if your still interested try, 1k red or yellow 3mm or 5mm Leds for 26.99


    Reply 10 years ago on Introduction

    I've purchased from AND another place called they both have great deals on "cheap" LED's of all colors. The only thing to keep in mind is these are "low quality" LED's that have poor color consistency... meaning you wouldn't want to use them in a 5 million dollar display because it'd look "patchy". As for throwies, they work PERFECTLY and the price is low! Hope this helped!


    Reply 11 years ago on Step 2

    check out ebay, I got 50 for 4 bucks. just type in "(size) (color) LEDs", you can do the same for batteries, just gotta find some that aren't from china otherwise ur gunna pay a boatload on shipping.


    9 years ago on Introduction

    We did this same type idea with IR Diodes. We built tiny throw away circuits out of a IR LED, 3 vdc Lithium battery and photocell. We emplaced them in the daylight at areas we needed marked as perimeter or boundries of types. Then at night we would veiw the area using night vision to gain the exact area marked with the LED. They sell 9 volt White light and IR Light Beacons that plug directly onto a 9 volt battery. They have been around since the Vietnam War and work just like your little contraption does. Good Idea!


    9 years ago on Introduction

    How long do they stay lit when using a ultra brite LED / 3 vdc Lithium battery?


    9 years ago on Step 1

    Can you list your per item costs?


    9 years ago on Introduction

    hey anyone know where I can get a pack of LEDs in scarborough? get back at me please!!!! : )