Electronic snowflake on AVR.

Here you are a project electronic snowflakes on AVR.

From site  http://amichalec.net/2012/02/e-snowflake/

The concept is simple: using Atmega8 which operates three 8-bit shift registers (74hc595) to they get a 24 LEDs. Brightness controlled PWM for each LED separately. Since the scheme is powered by a 3.0V for white LEDs mounted 470R resistors for current limitation. For RGB LED resistors 1k. Total consumption of the battery is 100mA.

Schematics.

 

Front view

Bottom.

Video of work

Project EAGLE

 Atmega8 HEX

 

Source Eclipse

 

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