Dangerous Prototypes sent me a web server from their "Scratch and Dent" drawer. The circuit board was small enough to fit in the palm of my hand — but just how dinged was it, and could I get it working?
Digikey have frequent competitions and giveaways advertised on their twitter feed, and this week I was a lucky winner. So what happens when you give your kid a Cui Inc. branded pen and some Digikey post-its to play with? She draws a calculator. :-)
For my entry to the Dangerous Prototypes 7400 Contest, I decided to make a true random number generator. In particular, I wanted a latching RNG — not merely a continuous stream of numbers, but a continuous stream which I could sample at intervals. The circuit would be made up of a minimal number of digital logic parts. And deliberately inducing noise into the digital circuit would involve breaking all the usual design rules, which is fun.