Dhananjay.v.gadre sir's great battery less dice

Here is the video of a battery less dice made by one of our faculty Dhananjay.V.Gadre sir.
This circuit employs an AVR microcontroller and uses a faraday generator for generating the emf.
First the device is shaken many times and then the charge is stored in a very large capacitor.This capacitor provides the required potential to light the L.E.D's that make up the dice.
A random function generator generates a random number between 1 and 6.

See the demonstrative video:

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