Heard from a greybeard that they had a demo night in university (this was probably early 80s), and one of the demos was was some sort of path-finding rover robot. Of course, it ended up being one of those projects that had show stopping bugs up until a few hours before showtime.

During demo night, it was a big hit, until a stray camera flash got (un)lucky and wiped the microcontroller's EEPROM...

Feels a little apocryphal (I'd assume most flashes have / had UV filters?)