Generating Random Bits with Avalanche Noise

They chose to design a device that produces random bits over a USB connection provided by an ATmega32U4. There was a time when US export restrictions covered random bit generators and so some security hardware was shipped with a set of dice so users could generate random keys reliably! See also this ars technica piece from 2013 “We cannot trust” Intel and Via’s chip-based crypto, FreeBSD developers say.  See also this Hackaday article Towards The Perfect Coin Flip: The NIST Randomness Beacon and this wired 2003 story about the Lava Lite RNGs.

See RAVA: An Open Hardware True Random Number Generator Based on Avalanche Noise by Gabriel Guerrer.

The essential elements are a boost convertor to get a 24 V reverse bias voltage

Then it uses a pair of reverse-biased diodes to generate two signals which are compared against each other:


This produces around six VCMP  transitions per microsecond:
 
If you want faster random bit-rates you could consider adding more of these modules together and XORing the outputs.
 
I don't know what effects all this randomness might have on the Unified Quantum Field  though, ...  It's amazing that Google doesn't show up a page of the statistics of David Lynch's "Today's Number is, ...". See David Lynch has your number. But does it add up? 
 
December 16, 2022. Today's number is, ...


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