Q. What do the flashing blue lights off to the side of the freeway mean? They flash at the end of long poles, perhaps near construction materials. There is one at the Pacific Coast Highway exit on the ...

This simple and cheap circuit is not just for Christmas! There are just two resistors, a small-signal transistor such as a BC547, one ‘flashing’ LED and a string of ‘normal’ LEDs. The flashing LED ...

It is the time of year when decorations appear everywhere and everyone has a preferred style, from bright flashing lights to something more understated. Christmas decorations are meant to be cheerful, ...

In this post, two LED blinking circuits are given below. First one is dancing bi-color LEDs (two different color LEDs) where the two color LED will run in sequence. In the second circuit, we will ...

Festive colour schemes often rely on red and green. Red, however, is widely reported to be the most uncomfortable colour. One ...