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November 10, 2008
Tutorial - Controllable Power Outlet
about 12 years ago
A microcontroller is certainly not the simplest in most cases. Look at the trusty old 555 timer. Wire it up in monostable (one-shot) mode and it will do exactly what you describe with only four components (one 555 chip, one resistor, one large cap, and one small cap). Very long accurate pulse times are difficult to do because of leakages, etc., but for many applications that don't require second-level precision on a 30-second pulse, a 555 is the tops.
No public wish lists :(