Electronics filter. Game show buzzer+. There are tons of simple game show buzzer layouts on the google. What I can't seem to find is an idiots guide to something that would allow you to take an input more complicated that a simple yes/no. i.e. interrupt + [string]. Any pointers?
posted on Jun 26, 2008 - 3 answers

ElectronicsFilter: How do I drive a step-up transformer to get hundreds of volts out of an AA battery? They're only 1.5v. [more inside]
posted on Sep 3, 2007 - 7 answers

I have a simple Sony reel-to-reel tape deck from the 1960's that I'd like to install a speed control on. Since I have no electronics skills, can anyone here recommend an ace 'circuit bender' in the Los Angeles area? Thanks :)
posted on Mar 1, 2007 - 3 answers

Any suggestions for a small, battery-powered flashing LED setup I can use for an outdoor mock alarm? [more inside]
posted on Oct 21, 2006 - 5 answers

I'd like to trigger a relay that momentarily closes a switch based on the voltage of another wire. Maybe. I think. Please help me with this basic (I hope) electronics project. [more inside]
posted on May 14, 2006 - 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]
posted on Aug 29, 2004 - 14 answers