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 ...
This is a simple flashing led circuit with 2 leds and 2 NPN transistors. It illustrates the behavior of transistors and capacitors and if you use an oscilloscope it will be very easy to determine what ...
With just one hotshoe to your camera’s name, choosing between an LED array for video or a flash can mean either leaving one at home, or swapping between two in the field. A new IndieGogo campaign aims ...
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