Roadside assistance and vehicle recovery operators are now able to apply for permission to use red flashing lamps on their vehicles. Red flashing lights were first mooted in the Department for ...
A pair of alternating flashing LEDs makes an excellent visual alarm. One of the LEDs remains illuminated, so there's little chance the alarm will go undetected, even by a casual glance. Several ...
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 ...
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