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Blinkybug (Maker Faire version)

Blinkybug (Maker Faire version)
UPDATE: Blinkybug Kits, which include all the parts to make 4 bugs, are now available on Make Magazine's online Maker Store.

Blinkybugs are small, eletro-mechanical insects that respond to stimulus such as movement, vibration, and air currents by blinking their LED eyes. They're incredibly simple, yet have a certain lifelike quality.

I've been making variations of these for a while now, and showing others how to make them at museums, fairs, workshops, etc. It isn't rocket science, but there's some tricky soldering involved, and they usually take a person at least an hour to put together for the first time.

I wanted to come up with a solder-free version for the workshop I was organizing for the http://www.makerfaire.com/ 2007 Maker Faire], which took place May 19 + 20 in San Mateo, CA. So after a bit of experimenting, I came up with this simpler design.
 
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Step 1Tools and Parts

Tools and Parts
Tools you will need:

  • Glue gun + glue sticks
  • Rotary tool w/ metal cutting blade (a hacksaw or similar may work)
  • Safety goggles
  • Metal file
  • Measuring tape or yardstick
  • Wire cutters
  • Needle-nose pliers (2 pairs would be nice)
  • Permanent marker
  • Scotch tape
  • Scissors

Parts:

  • .009" guitar string
  • Coin-cell battery
  • 5mm LEDs (2 per bug)
  • Pipe clieaners (aka "chenille sticks")... assorted colors.
  • Coin cell battery... 3V 2032 type.
  • Thin copper tubing: 1/16 x .014

I obtained the copper tubing at a hardware store, and it should also be available in hobby shops. The 1/16 is the outer diameter in inches, and the .014 is the wall thickness. Its inner diameter happens to be about .035", which is important because the guitar string needs to fit through (which is .009").

LEDs can be found anywhere on the webernet, and are actually fairly cheap at Radio Shack if (and only if) you buy the variety pack. One can obtain the coin-cell batteries at your local drug store, and they are also available widely online, such as at DigiKey. You should be able to get "singles" of the guitar strings at any music shop. The pipe cleaners can be found at tobacco shops and arts + crafts suppliers.
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72 comments
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Dec 12, 2011. 4:10 PMleeski says:
Hi!

I'm lee with Instructables and I just wanted to let you know that I ordered 3 of your binkybug kits from mindware for my son Jonah's 6yr bday party.

How much are they already created vs the instructable above.

Lee
May 12, 2011. 1:29 AMjwoo2023 says:
actually, you could replace the guitar with the new ones then use the old ones for this project!
Apr 12, 2011. 5:30 AMGigi Tang says:
I'm making the blinky bug for a science project yet i really couldn't find the copper tubing in hobby shops or in hardware stores. Are there any other places which would have it? The project dues very soon.PLEASE HELP!!!(p.s. I'm from Hong Kong.)
Sep 10, 2010. 8:42 PMtubbytommy says:
I'd think a place such as hobby lobby or any place that sells RC cars and planes would have tubing.
Apr 3, 2009. 4:29 AMoldanvilyoungsmith says:
can I just attach the guitar (i'll use banjo) string to the battery itself? I have everything else around the house and don't want to have to wait on getting the tubing.
Aug 13, 2010. 8:36 AMhuttarl says:
I went by Lowes and they didn't have any copper tubing nearly this small. Has anybody found it at e.g. Radio Shack, Hobby Lobby, ...? Btw I ordered a kit, but I may want to make more.
Jan 12, 2010. 6:03 AMArduinoFun says:
I made these with my kids from the kit. They really loved them!
Dec 18, 2009. 6:33 AMMaximil says:
 Very cool! i making one for a gift, but i modificated it. it's without strings. But still it's cool!
Dec 1, 2009. 9:01 AMjdtwelve12 says:
Nice little project.  I may have to make one of these some time.

Have you tried cutting the copper tubing with the guitar string already inside?  Or a toothpick, etc.  Perhaps having something inside the tube would keep it from crimping?  I suspect this would be easier than getting out the rotary tool.
Nov 1, 2009. 4:19 PMLEDgonuts says:
you can make it move by gluing 2 pager motors to the bottom please make video if you do:)
Sep 21, 2009. 10:51 PMBraisedDuck says:
maybe using the glue gun might be better....
Sep 21, 2009. 6:52 AMBraisedDuck says:
Hey,obeyken, is it okay to use thin copper wire instead of guitar string?I mean, it bends easier, right? Oh, and is it ok to just glue the wires together?pls reply.(sorry if i'm offending u with my language...)
Sep 21, 2009. 10:42 PMBraisedDuck says:
well, its worth a shot...........I'll send you a photo if anything develops....(get it?)
Aug 21, 2009. 9:30 PMmusicalbee2003 says:
Just made mine today. He rode on the Ice Cream cart with me on my route!
Aug 18, 2009. 5:40 PMDIY Dave says:
I have built three different bugs. I'll have to post some pictures
Aug 15, 2009. 6:18 AMporcupinemamma says:
I was wondering the same thing.
Apr 3, 2009. 7:46 AMoldanvilyoungsmith says:
I just had a great idea! attach a pager moter that turns on the same way, so that when the eyes blink it also starts to move (like those toothbrush bots)
Mar 5, 2009. 8:57 PMShane1163 says:
could build a lightning bug/firefly too! lol
Jan 6, 2009. 7:30 PMBIGBUG says:
Very cool little instructable! I must make one. Yea, I know I am waaaay late on this one... Maybe less time building robots and more time reading INSTRUCTABLES!
Jan 5, 2009. 8:41 PMsamirsky says:
Made a few of these with stuff around the house. I didn't have the guitar string, so I used single strands from stranded wire. I also used solder, since I have it.

The first one (orange legs), I soldered directly to the battery. Note: This is DANGEROUS; I DO NOT recommend. I was wearing eye protection, and there was no mishap, but it did concern me heating a battery so much. Also, it was very difficult to get the solder to stick to the battery (even though I sanded battery surface before soldering).

For the next 2 versions I made, I used coin cell battery holders I had. This worked much better. See the video to see how my creative 8 year-old put his under his ceiling fan to keep it blinking (in his Pinewood Derby car).

Apr 22, 2007. 4:09 AMKiteman says:
Have you thought of puting something inside the tube while you cut it, to stop it closing up? Say some narrow pin or nail?
Jun 26, 2008. 1:56 PMmonkeychow says:
A sharp craft knife works very well for this step. Roll the tube back and forth under the blade and score it all around with even pressure. Credit to the gent in the local hobby shop for the tip.
Dec 3, 2008. 1:24 PMSFHandyman says:
That's the way a pipe cutter works. It rolls a round blade around and around the tube until it separates. My Dad (a carpenter) taught me to just hold a thin tube or wire against a pocket knife blade, and run the blade around and around the until the insulation is cut, or the tube separates.
Jul 3, 2008. 7:50 PMhac says:
Brilliant! I want to make an army...
Jul 3, 2008. 6:27 PMgarrett10 says:
How much was it?
Apr 15, 2008. 1:38 PMeeeXsmart says:
great idea! perfect!
Apr 15, 2008. 12:30 PMultrauber says:
Love it. I am totally going to order the kit. +1 and favorite.
Apr 5, 2008. 4:54 PMGorillazMiko says:
Nicely done! It looks awesome, I want to try this out. +1 rating. (added to favorites)
Dec 26, 2007. 8:20 PMknitsteel says:
Cut it with a jeweler's saw.
Oct 7, 2007. 8:59 PMhifromshreya says:
Hey, heres a tip. when (suppoese) you gift a blinky to a friend, you need to put it in a box, right? so the blinky might stay lighted up and eat up the battery life. So what i did was that i slid tiny rolls of paper between the loop of the LED's Cathode and had the Guitar wire passing thruogh it. so when i wanted to show my Blinky, i could always slide out the paper rolls! ta-dah! heres a pic for reference
Aug 20, 2007. 11:39 PMmastelios says:
Tried doing mine yesterday,having no legs,i used wire and to cover the battery I used some "fur" from an old teddy bear.Needs imrovement because I didn't get the angle of the string right with the loops.Anyway, lacking the small tube,I just soldered a copper wire on the string and then used the copper wire on the battery.That part worked.I'll try again.Also I have some green leds that are not round,they are rectangular.I'll try using these to see how it shows.Last thing,can you think of something to use for legs that can have a spring-like effect?
Aug 27, 2007. 11:39 PMmastelios says:
This is my second try.I used a 3.6v from o cash register.I liked its round shape and its green colour..Plus it has 2 leads that are perfect for the guitar strings!really responsive!Very nice idea obeyken!!
Aug 13, 2007. 1:02 PMphenoptix says:
Clipping the end of my guitar strings is another reason I love my mini leatherman, the world's greatest tool!
Aug 13, 2007. 1:00 PMphenoptix says:
No way! You used new strings?! I've got about a million (well ok at least 6) used ones!
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Author:obeyken