Make: Online : Light to sound converter circuit

Light to sound converter circuit

Lighttosoundconverter
From the MAKE: Flickr pool

5Volt shares info, schematic and video on this simple yet fun/interesting project -

This is my simple light to sound converter. It simply converts light variations into sound. Listen to remote controls, TVs, burning flames, light bulbs and anything that emits either visible or infrared light.

Get more details on how to build your own from his blog - Light to sound converter

Related:

Comments

Oldest comments listed first.

Posted by: saimhe on January 6, 2009 at 1:25 AM

A portable version with headphones and detachable lens for a few meters range could be even better. Just imagine walking outside and peeking for any "concealed" amplitude modulation. A certain kind of people should immediately remember those ingenuous spies that were transmitting low-amplitude through an ordinary lightbulb directly visible from state border :)

Reply to this comment

Posted by: Anonymous on January 6, 2009 at 11:29 PM

neat, but definitely been done before...
from 1996: http://amasci.com/freenrg/ufoscope.html

Reply to this comment

Posted by: Collin Cunningham on January 7, 2009 at 5:16 AM

@[blank] - thnx for the link.
Just for the record, many projects we feature here aren't necessarily new but often they're "new to you" and that's always exciting ;)

Reply to this comment

Subscribe to MAKE Magazine!

Subscribe today, save 42% and get web access to MAKE free. MAKE Digital Edition is available only to subscribers.

$34.95 / 1 year
(4 Quarterly Issues)

Subscribe now

Void your warranty, violate a user agreement, fry a circuit, blow a fuse, poke an eye out. Make: The risk-takers, the doers, the makers of things... Welcome to Make: Online!

Make: television is here! Visit makezine.tv or iTunes to see all the episodes.

Connect with MAKE

	MAKE on Facebook Visit our Facebook page and become a fan of MAKE!
	MAKE on Twitter Follow our MAKE tweets!
	MAKE on Flickr Join our MAKE Flickr Pool!

make_tips on Twitter

MAKE's RSS feed is here.
Add MAKE to iGoogle - GoogleGoogle.
How to add MAKE to your RSS reader - Real simple.
Add MAKE on FriendFeed

Why advertise on MAKE?
Read what folks are saying about us!

Click here to advertise on MAKE!

MAKE wins Treehugger Best of Green Award

Make: Online authors!

Gareth Branwyn, Chris Connors (guest author), Collin Cunningham, Marc de Vinck, Peter Horvath (intern), Kip Kay, Goli Mohammadi, John Park, Sean Ragan, Becky Stern, Phillip Torrone

Suggest a Site!

Current Podcast

Weekend Project: Fire Piston Make your own fire starter that uses compressed air and burns at 500 degrees! Thanks to Bill Gurstelle for showing us this at Maker Faire. To download The Fire Piston MP4 click here or subscribe in iTunes. Pick up... More...