CONGRATULATIONS MAGGIE & BRAD!
There's been a fair bit of discussion over at Reddit about this blog post:…
Love the interactive map of the chip! http://www.righto.com/2014/09/reverse-engineering-counterfeit-7805.html
That is really cool. I suspect the opto he used had a Schmitt trigger output. The circuit would work even better with a true analog output opto...…