| Most PC enclosures provide only a single LED to indicate hard disk access, with the LED being connected to the motherboard via a two-pin con...
| Most PC enclosures provide only a single LED to indicate hard disk access, with the LED being connected to the motherboard via a two-pin con...
| This article mainly concerns enthusiasts using radio controlled scale models that include an electrical motor without permanent magnet brush...
| Remote controlled light switches are becoming more and more common. DIY stores have inexpensive sets consisting of several light switches an...
| If you are not lucky enough to have access to expensive test gear then lamp circuits using LEDs offer a good chance of success and allow a l...
| Here’s a recipe to make LEDs produce slow, continuous light effects rather than abrupt changes normally obtained from square-wave drive sign...
| This LED blinker manages with only a few components and is dimensioned to operate from an ac supply in the range of 4–16 V (6–24 V dc). As i...
| Ultrabright LEDs are becoming increasingly attractive for use in lighting and warning-signal applications. LEDs must be operated at a consta...
| This circuit will need just a few micro-amps to make an LED flash. The energy comes from a home made ‘vegetarian’ battery.We have to admit t...
| You don’t need special ICs when a capacitive (or ‘touch’) switch can also be realised with an inexpensive PIC controller. This article shows...
| Although this month’s Mini Project is not exactly stunning from a technical point of view, there are a number of unusual sides to it, mainly...