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Developed by the Graffiti Research Lab a division of the Eyebeam R&D 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.

Click on this link to see the LED Throwies in action in NYC thanks to resitor and fi5e!

Step 1: Materials List

Picture of Materials List
LEWThrowie015.jpg
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
Vendor:Amazing Magnets
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.
 
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Kirbsome!5 years ago
INTRODUCING:

Throwies on steroids -
The LED ULTRIE!

7 LEDs arranged in a ring
LED Ultrie.jpg

Hello! Do you have an instructable for this one? I want to apply something similar for a soft toy I'm making, just took my first steps on LED 'wiring' yesterday and your solution seems to fit what I had in mind... without entering into Arduino land _I'm not ready yet! Thank you :)

so simple yet so powerful

I have great news, you are today's winner of the "I Made It" Challenge for the month of june. Thank you so much for being a part of the instructables community and encouraging authors to post more projects!

For winning you are receiving a 3 month pro-membership.

http://www.instructables.com/community/June-is-I-Made-It-Challenge-Month-Win-a-Pro-Mem/
I have posted a how-to on making throwies with removable tabs where you can pull it out to turn the LED on and slide it back in to turn it bad off. It's not very hard to implement, and is quite useful for conserving battery power.

Here's the link: http://flickr.com/photos/everythingdigital/sets/72057594069888500/

I'm also working on throwies that automatically turn on upon sticking to something and off when they are removed (as suggested above), and I have a few prototypes working but there are still some bugs to work out.
Q-Branch (author)  everythingdigital9 years ago
I have included your how-to on the G.R.L. Throwies site and in the upgrade section of the throwies instructables post. Thanks so much for the mods and looking forward to the next rev!

Best quote: "Throw it up high and in quantity to impress your friends and city officials."

How long do they last?

Unknowable. Friends can be fickle, and city officials often disappear once installed.

not sure city officials would be that impressed.

fun with LED throwies
1566068116_e52b4e8699.jpg955773733_f2f32e7f86.jpg1566068136_7291032f74.jpg

It tells robots that the link is URL/address of a particular category in the blog.


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This helps robots to identify between normal web page links in your blog with those in categories.

wikd7 days ago

Thank you for //////

Awesome LED Collections I really love it


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cool

wanna try it


I really impressed
after read this because of some quality work and informative thoughts . I
just wanna say thanks for the writer and wish you all the best for coming !.
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AllW11 days ago



Excellent article.
Very interesting to read. I really love to read such a nice article. Thanks!
keep rocking.

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AllW11 days ago

Excellent article.
Very interesting to read. I really love to read such a nice article. Thanks!
keep rocking.

http://www.bhubaneswarescorts.info/

oalvarez214 days ago

how long they last?

Awesome LED Collections I love it

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http://riyajain.in/

I fit the definition of Sigma perfectly, with the minor exception of not being very Alpha.

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TanyaT217 days ago

Amazing Led Throwies! I love it!

Thanks to author.


http://malti.in/
ShortedOut22 days ago

LED throwies are a cool idea ... in the right setting. Both button cell batteries and neodymium magnets are harmful if swallowed by wildlife (birds, etc.), pets or children. Button cells will eat through the stomach within two hours, causing massive bacterial infection. So have fun, but do so responsibly.

coventrymakerspace made it!25 days ago

We made this for our community event. We had to change it a bit for safety. It was awesome! Thanks!

http://www.instructables.com/id/Community-Kids-Bui...

FCS7X8JID4CRZ7T.MEDIUM.jpg
elliotnash2 months ago

This looks really cool. Guess I now know what I'll be doing before Christmas comes.

Shirleydavis2 months ago

Helpful...!!

KIRAN PALK2 months ago

sir, its a really nice concept ..................... but i have one doubt ......that is

we require different batteries and magnet for each led?

elliotnash2 months ago

Looks really cool. I guess I should start preparing early for Chrismas now when I know of this awesome tutorial. :D

T0BY2 months ago
Absolutely brilliant!
WaqarH13 months ago

Thanks for your help. I was looking for a good blog where i can learn how to make a working LED throwie. I think it is one of the most useful websites on this topic.

Gym Flooring by http://rubbergymmatsuk.co.uk/gym-flooring.html

WaqarH13 months ago

It is the best webiste about led throwies. I have seen many websites but this website has shared ideas that i haven't found on any other webiste.

http://gymmatscompany.co.uk/

thermallyme3 months ago

Cool project!

Harrys63 months ago

Just i want to say that your post is really nice i appreciate your work , Keep it up guys, Thank you for sharing this post... http://rubbermattingexperts.co.uk/

Harrys63 months ago

Just
i want to say that your post is really nice i appreciate your work , Keep it up
guys, Thank you for sharing this post... http://rubbermattingexperts.co.uk/

GwyneddS3 months ago

I made one for my hair! It won't last long because it's so many LEDs, but it's fun for now. Just used electrical tape and a paperclip.

thowie clippy 2.jpgthrowie clippy.jpg
Harrys64 months ago

Thank
you so much for sharing this type of wonderful post. I really appreciate your
post much time. Buy our rubber matting & rubber flooring from http://rubberflooringsupplier.co.uk

HelenR6 months ago

I don't want to be a party-pooper, but those lithium batteries are lethal to children. So you might want to think carefully about where you put these things.
http://www.bbc.co.uk/news/uk-england-manchester-29610570

Conor M HelenR4 months ago

Hopefully there mums/dads are good parents and wont let them eat them

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