I mean as far as general electronics circuits go, I guess it is simple if you compare it to something like a computer motherboard but that doesn't mean it is simple to understand how it works. And why it needs so many components to work. I didnt count them all but it looks like around 50 discrete components. I don't understand why it needs that many. I thought just one single zener diode is all you need.

I think it does:

The TrueRNG Hardware Random Number Generator uses the avalanche effect in a semiconductor junction to generate true random numbers. The avalanche effect has long been used for generation of random number / noise and is a time-tested and proven random noise source.


The cost to buy theirs would probably be less than the cost to try and make one yourself. Not only monetary cost but time costs. Thing I don't like about any of these though is how they use "whitening".

The new TrueRNG v3 algorithm uses a more advanced whitening technique to reduce the bias below levels where it can be measured reliably.

If something is truly random then it doesn't need any type of post-processing. Shouldn't need. But you don't get a choice if you use their device...


Low bit rate, kind of pricey setup but the theory of its operation as explained in that instructable is much simpler to understand. you don't even need uranium. just a banana or two might suffice.