3 Simple Ways to
Share What You Make

With Instructables you can share what you make with the world — and tap into an ever-growing community of creative experts.

PhotosPhotos

Share one or more photos of a project, recipe, or whatever you've made, quickly and easily.

Step by StepStep-By-Step

Share your step-by-step photos with text instructions of what you made so others can do it too!

VideoVideo

Share your how-to video. You'll need your embed code from a video site such as YouTube.

"Dead" Battery Lamp

Step 6You're done!

You\
«
  • IMG_2540.JPG
  • IMG_2541.JPG
  • IMG_2544.JPG
  • IMG_2542.JPG
It's done! You can use it for anything you need to light. I lit my fish tank at night with it for a neat affect. It is very bright, and lasts very long (as of writing i am on 2 days and counting with no decrease in brightness!). Any suggestions are welcome, and if you make one, please post pictures! If anyone wants to know how it works, simply ask in the comments and I'll put up another slide explaining it.
« Previous StepDownload PDFView All StepsNext Step »
5 comments
Dec 10, 2008. 2:18 PMJuanarama says:
what if I wanted a slow flash, like a lighthouse (I know a lighthouse does not flash but has that effect because of rotating source)
Dec 24, 2008. 8:45 PMrocketman221 says:
you can buy flashing leds or you could make a simple flasher circuit with a couple of transistors.
Dec 18, 2008. 1:55 PMstrmrnnr says:
You might use the cylon eye circuit for a light house. It could use more power than is available here. Just divide the lights up around the cardinal points and away you go.
Dec 23, 2008. 6:26 PMjoinaqd says:
how long can the thing stay on for?
Nov 24, 2008. 1:29 PMtammasus says:
Hey! that's really cool. Why is the inductor necessary? and the transistor?? is it to boost the power?? ok. Thanks!

Pro

Get More Out of Instructables

Already have an Account?

close

All Steps Viewing
View all steps of an Instructable on the same page when you're a Pro Member.

Upgrade to Pro today!
7
Followers
13
Author:zjharva