Is it possible to get a strobe light to respond to sound input? [more inside]
posted by cloeburner on Sep 5, 2009 - 2 answers

Circuit builder in Minneapolis area? [more inside]
posted by ian1977 on Aug 5, 2009 - 3 answers

Using a AA battery, two pieces of speaker wire and an LED, I am trying to make a simple circuit. I am meeting with complete failure. Help! [more inside]
posted by puckish on Aug 11, 2008 - 15 answers

I'm interested in learning how to wire LEDs and program/control them. [more inside]
posted by god particle on May 26, 2008 - 10 answers

Timer and Control Circuit. I need to measure the rotation of a spindle and the time during which a circuit is thrown open during that rotation. I think I need a clock, a counter and a software interface. Where do I start? [more inside]
posted by grahamwell on Nov 25, 2006 - 4 answers

In tube ciruitry, what is a "starving plate" design?
posted by goodnewsfortheinsane on Aug 27, 2006 - 2 answers

Just a stupid question that's puzzled me for years: Why is it that, on electric fans, the order of the settings on the switch is OFF - HI - MED - LO? I'm sure there's an electrical reason for this, but I don't know what it is, since I know nothing about circuitry. One would think that OFF - LO - MED - HI would make more sense. Can someone explain this to me?
posted by Dr. Wu on Jun 14, 2005 - 23 answers

Where can my sister (in London) find or buy dead printed circuit boards for an art project? The larger the better, the cheaper the better, what they used to be doesn't matter.
posted by armoured-ant on Dec 2, 2004 - 6 answers

I want to learn how to make simple electronics, like LED controllers that I can hook up to a serial port. Can anyone recommend a book to get started with? [more inside] [more inside]
posted by krunk on Aug 29, 2004 - 13 answers