Mass Programming ATmega32U4 MCUs
If you’ve been following the story of the “Mooltipass Mini”— and yes, that is a Fifth Element reference — you likely know that it works as an offline password keeper. The idea is that while you could store your strong passwords in an online locker of sorts, something like this has the potential to be compromised. This password keeper instead takes the form of a physical object and smartcard.
After raising around $290,000 via crowdfunding, this idea resonated with quite a few people. Now it’s time to actually make these devices, meaning “Limpkin” now needs to program several thousand microcontrollers, each with unique data. Programming them one-by-one would take forever, so a Raspberry Pi 3-based system was created that could handle nine of these MCUs at the same time.