Sorry, for some reason I saw $11, not 11 cents and thought you were looking at a broker site at a very particular part. The biggest reason I wouldn't use Padau

Sorry, for some reason I saw $11, not 11 cents and thought you were looking at a broker site at a very particular part. The biggest reason I wouldn't use Padauk microcontrollers is that they're not available in north american distribution. I personally really don't get the 555 timer love - almost anything people would do with one for a small design with no firmware, I would use an lm339 type quad comparator. They are great for detecting the presence/absence of pulses though.