ASync-Firefly
posted Mar 11th 2011 1:15pm by Noah Dunkerfiled under: led hacks
[dev_dsp] wanted to try his hand at creating a purely analog implementation of multiple synchronizing fireflies powered by a single battery and built from off-the shelf, through-hole components on inexpensive protoboard. In theory, even your local Radio Shack should still carry all of this stuff. He was obviously inspired by [alex]‘s fireflies that we’ve covered in the past, but he wanted to see how far it could be taken without the use of a microprocessor.
In the end, [dev_dsp] relied on one crucial piece of digital ware, the ever-popular 555 timer IC, but he’s using analog discrete components to do the grunt work of adjusting the phase of each firefly by feeding a little extra current to the trigger capacitor whenever the flash of a nearby firefly is detected. After the jump, you’ll find schematics and a video demo of three ASync-Firefly modules in various stages of assembly playing with one another while [dev_dsp] discusses their operation.
555 Analog Syncing Fireflies Test
Video Link...
http://www.youtube.com/watch?v=cxVXot_unxU&feature=player_embedded
tagged: 555, fireflies, firefly, led, phototransistor, synchronized
Go there...
http://hackaday.com/2011/03/11/async-firefly/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+hackaday%2FLgoM+%28Hack+a+Day%29&utm_content=Google+Feedfetcher
- ASync-Firefly
- ASync-Firefly - Hack a Day
- ASync-Firefly | Make, Hack, Void
- YouTube - 555 Analog Syncing Fireflies Test
- 64 Synchronizing Fireflies - Hack a Day
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