At the 38th Chaos Communications Congress, [Frostie314159] and [Jasper Devreker] gave us a nice update on their project to write an open-source WiFi stack for the ESP32. If you’re interested … ...

Pair the ESP32 with a battery, and everything can be done on the go. The project is part of [risinek]’s master’s thesis, and the full academic article is an educating read.