| In many application areas it can be very handy to be able to control something wirelessly. This circuit shows how an ATtiny microcontroller...
Matthias Haselberger (3)
| Many different types of wireless switch modules with a relay for switching AC power loads are commercially available. However, some applicat...
| This small circuit could act as a power indicator for the 230 V mains supply and in terms of efficiency is the equal of classical neon bulb...