The end result is a USB stack running on the ESP8266 WiFI module. [cnlohr] has been working for about a month on this USB implementation for the ESP, beginning with a logic analyzer, Wireshark ...

[CNLohr] just can’t get enough of the ESP8266 these days — now he’s working on getting a version of V-USB software low-speed USB device emulation working on the thing. (GitHub link here ...