By Jules Ryckebusch View In Digital Edition
Light Emitting Diodes — or LEDs — have fascinated me since I was a teenager. I have built many projects over the years with them, usually involving blinking or sequenced chase lights using 555 timers and 4017-decade counters. Over the past few years, both the intensity and available colors of commercial LEDs have drastically improved. This includes blue ones that, when combined with red and green LEDs, can make up a pixel of an RGB display..
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