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Digital clock with discrete diodes

Building digital clocks is some sort of “Hello World!” project to most embedded hobbyists. And you can find tons of them with various displays and microcontrollers. But there is always a room for something different and unusual. So if you have spare 130 LEDs you can do same easily. The guy, who calls himself Syst3mX in instructables, has built a digital clock by using discrete LEDs and Arduino. He made something similar to seven segment display where distinct LEDs are aligned and controlled like it. Of course lighting up such a bunch of diodes requires more power so each segment is driven by transistor. The overall effect looks really great Continue reading