Instructions for making LED bulbs : LUSENET : TimeBomb 2000 (Y2000) : One Thread

Instructions for making LED bulbs (to replace standard 2-cell flashlight bulbs) are available at

Ok, it's not world peace, but it can save a bunch of batteries.

-- bw (home@puget.sound), June 11, 1999


OK...I looked at the site and read the instructions. Probably no big trick if you are into hobby electronics. But, looked like a pain in the butt to me. Would still like to have several though and would be willing to pay to have them. Any thoughts from forum readers as to how to get these without jumping through the hoops?

-- jeff (, June 11, 1999.

OddOne is selling them, 16 bulb arays, for 100+/-.


-- Chuck, a night driver (, June 11, 1999.

CCRAIN CO (Spelling?) has them. Heard them advertised on Art Bell. Seems like the price was about $34 each or 3 for $90, if I remember right.


-- Gerald R. Cox (, June 11, 1999.

If you want to avoid the hassle of trying to fit the resistor inside the socket, you can try a trick I successfully employed. You can make the resistor a separate unit that sets between the top battery and the bulb base. Take two peices of copper ( any kind of scrap copper or in a pinch, you can use two pennies) and solder one lead of the resistor to one peice of copper and the other lead to the other piece of copper. Cut a peice of stiff cardboard to aproximately the same diameter as the battery. Epoxy each piece of copper to either side of the cardboard. ___ / \ \___/ Bulb |_| * Copper disk _____ / Resistor R ------- Cardboard disk \ _____ Copper disk __@__ Battery | | | | It's important that the carboard disk be big enough to keep the assembly from flopping around inside the flashlight and that the copper disks are not so big that they touch anything other than what they're supposed to. To be on the safe side I gave the leads of the resistor a heavy coat of paint, to decrease the chances of the resistor unit shorting out with any of the internal mechanism of the flashlight. I'm going to use shrink tubing on the next one I build. Trust me, it's a lot easier to do an LED flashlight, if you don't have to try to finagle the resistor down into the lamp base.

-- Bokonon (, August 07, 1999.

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