| In the animal world, the males of the species don't have it easy finding a partner – they sometimes have to prove in fierce (mock) fights wi...
| In the animal world, the males of the species don't have it easy finding a partner – they sometimes have to prove in fierce (mock) fights wi...
| We have always been in close contact with plants, trees, flowers, shrubberies, grasses, weeds and other vegetation, yet we have never figure...
| Supposing you’d want to bring some light into a boat or campervan during the evening you could connect a couple of 12-V incandescent lamps t...
| Sure, you can easily buy an LED flashlight at the hardware store. But where's the fun in that? This DIY LED flashlight offers up to 78.8% ef...
| This circuit was designed for use with an LED flashlight of the sort used by pedestrians, in particular those walking at night time. Once yo...
| Complex electrical wiring is required if a single load like hallway or corridor lighting is to be switched on and off by any one of a large...
| A cue light is a system of one or more electric light bulbs (usually traffic light colors) used to allow silent cues to be given to technici...
| This cheap & cheerful circuit is indispensable if you are suspicious about a defective RJ45 cable in the patch cabinet or anywhere else for...
| This small module has been designed to individually control five LEDs used to illuminate model buildings. The control signal is sent over a...
| Color LED strips are now available at low cost in all sorts of types and sizes. With the controller circuit described here, you can set your...