SHA-2017 had a really cool badge: https://wiki.sha2017.org/w/Projects:Badge. 2.9" e-paper display, ESP32, 1000mAh LiPo battery and firmware with an online "app store" supporting apps written in micropython.
Sadly, there were only a handful available after the event (for about €30). I'm hoping someone continues with the design, because I can think of quite a few applications, but I'm worried about breaking it.
Sadly, there were only a handful available after the event (for about €30). I'm hoping someone continues with the design, because I can think of quite a few applications, but I'm worried about breaking it.