3x3x3 LED Cube Circuit Based 555 and 4020 IC

This circuit is designed to drive an electronic 3x3x3 cube consisting of 27 LEDs. IC 4020 will drive the LED circuit as well as a 14-stage binary counter and uses 9 output pins. Each output from the IC can drive 3 white LEDs arranged in series.

A dropper resistor is not required in this circuit because LEDs only provide a maximum current of 15mA per output. IC 4020 in this series can produce 512 beautiful patterns on the LED light.

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