If you can’t kill the electricity, the switch box might be connected to a cable from a different circuit. It’s not a common problem, but with old houses, anything’s possible.

[Vadim] chose an ATtiny2313 to handle the RC-5 IR protocol and switch the light. The circuit still has a switch to manually control the lights, preserving the original functionality of the light ...

We frequently get home automation tips, many of which have simple circuit-based on/off control for lights. [Paulo Borges] has created something quite different, however, with his in-the-wall servo-… ...