| Smoke alarms are extremely useful devices, but they suffer from one significant disadvantage, which is that they’re battery powered. This ci...
Jacob Gestman Geradts (5)
| Along with a video switch, the circuit includes a video amplifier that has been used with good results in many other Elektor projects, which...
| The big fear of every developer of a microcontroller or computer-driven control system is that the computer or controller could crash while...
| The AC powerline indicator presented here has a complete galvanic isolation from the grid. The indicator is an LED that lights up when a cur...
| For this interface we use an (old) computer keyboard. This contains as many switches as there are keys. These switches are scanned many time...