Instructables

Step 1: Materials 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 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.
Kirbsome!4 years ago
INTRODUCING:

Throwies on steroids -
The LED ULTRIE!

7 LEDs arranged in a ring
LED Ultrie.jpg

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/
fun with LED throwies
1566068116_e52b4e8699.jpg955773733_f2f32e7f86.jpg1566068136_7291032f74.jpg
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)  everythingdigital8 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!
ritchie5615 hours ago

May I make a suggestion. LEDs by definition do not regulate the current passing through them. In other words, if you don't limit the current passing through them with a series resistor, then they will allow as much current to flow through them as the battery can deliver. The LEDs you mention have a maximum current limit of 25mA (0.025A). The button batteries can delivery 10x that much current in a short period. The result will be a very shortened LED life and a burned out battery. Red LEDs drop about 2 volts and the battery can deliver 3 volts, so a 50-ohm series resistor is in order (for a safe 20mA current flow). The blue and green LEDs need 3-3.6 volts to operate and would require 2 batteries stacked together to produce 6 volts. For blues and greens I would use a 130-ohm series resistor. By doing this, the LEDs will illuminate much longer. The resistor can be put on the positive or negative side of the battery between the battery and one of the LED leads.

calmlunch3 days ago

good

calmlunch3 days ago

super

clapfilk17 days ago

super

clapfilk17 days ago

super

good

Excellent...!!

great

clickyummy1 month ago

nice

clickyummy1 month ago

nice

clickyummy1 month ago

nice

bearblue1 month ago

good

bearblue1 month ago

good

bearblue1 month ago

good

Cronos511012 months ago

When I started reading this, I thought, $1? That's okay, but how long do they last? It's a really cool idea to cheer up an area, but not so much if you only get a few hours. Then I saw you get 1-2 weeks. Simply brilliant!

fadecomic2 months ago

I'm going to take a handful of these in blue to a con dressed as Goku. KAMEHAMEHA!

generalsocial2 months ago

I just took a throwie, added a snowflake as a diffuser. It's now a "Snowie!". http://inventorartist.com/dream-walk/

gazumpglue2 months ago

These are really neat. It's a shame Christmas just passes. The kids would of had a lot of fun with these. There is always next year!

harinderiniz5 months ago
Gonna Try it

Same here

ChippMarshal3 months ago

These are really neat. It's a shame Christmas just passes. The kids would of had a lot of fun with these. There is always next year!

tbuchanan24 months ago
Where do you get the leds
flyingpuppy5 months ago
Where is the epoxy used?
Mariska Botha7 months ago
Awesomeness! Very cool
BunnyRoger7 months ago
AAAAhhhhhh I love this...
I can see myself having a LOT of fun with this. Thank you for sharing.
MAApleton7 months ago
Are these the same type of led lights they used in the step up movie? I think it was the last movie. Thanks
mf7388 months ago
Hi,anyboday like buckyballs and buckybars,they also very vest diy toys,you can find them here: 
mf7388 months ago
Hi,anyboday like buckyballs and buckybars,they also very vest diy toys,you can find them here: www.buckyballsstore.com
Very detailed Information I think they use this in move. I think step up.
Try to experiment this thank you for the Materials List and tutorial.
physicx9 months ago
can ihave one of your experiment
technicgeek1010 months ago
I'v made one of these before It, but mine was more like a piece of c*** compared to yours! good job!
Kelly0210 months ago
nice idea!
Thanks for adding to the legitimacy of this practice. I've been doing this for years. It's amazing the valuable things people throw out
Pro

Get More Out of Instructables

Already have an Account?

close

PDF Downloads
As a Pro member, you will gain access to download any Instructable in the PDF format. You also have the ability to customize your PDF download.

Upgrade to Pro today!