Flickering LED's like a firefly effect?

I got this message over an e-mail, I cant help the guy and hope that yall can help him for me:

"Hey guys, wondering if I could get your help with a project for my daughters school play.

The effect I want to do is a led sort of fire fly or even a flicker candle effect with about 100 led's. I would like to possibly have control over the amount of time they are off or at times just keep it on steady as a regular flicker effect.

The led's would all hang individually above the set, so any resistors would be at the top where you do not see them.

I would like this to be powered by a transformer, not battery and plug it in the wall.

So to have about a 100 or more random flickering little led's is the goal and executed in the most logical (and clean) way. I have seen long lengths of copper tape and then solder to that or whatever you think.

I know this is just a play, but woud mean a lot to my daughter. I can put it all together with a plan and a good source to get the various elements.

soooo the idea is have the led's suspended by the cable hanging down maybe 6' from above where I would have a 1 x 4 grid to hang everything from.

The led's would either have random flickers on a slow (hopefully) adjustable sequence. Out of 100 led's you would only want maybe 3, 4, 5 (who knows how many yet) on at one time. So just quick little flashes of pulsed light like the flicker candles do. So you would have little clusters of 2 or 3 leds hanging down and I would use black heat shrink to bind it up and the cable (22 guage?) would be black as well.

The other idea may be to just have a constant candle flicker effect to each "drop" and leave it at that. Would be great to know how to do both.

any sugestions?

cyborlink5 years ago
The company Firefly Magic http://www.FireflyMagic.com actually supplies 'Firefly' lighting effects to theme parks, including Disney & Universal, zoos, nature centers, stage, movie, and TV productions.
rickharris6 years ago
iceng6 years ago
If you liked the fireflies in the Blue Heron restaurant at Disney and can apply any microprocessor, then PM me and I will share a circuit and software with block diagram that does the fire fly to perfection using multiple LEDs.

orksecurity6 years ago
See the instructables under "related" at lower right, and/or enter "firefly" or "fireflies" in the Instructables search box at upper right, and/or see the various LED grids on this site (searching for "charlieplex" will find at least some of them) if you want more control over this and are willing to use a microcontroller or PC to drive it.