The electronic badge is awesome!
Does anyone know where can I find the source code used?

I noticed that entering u u d d l r l r seems to start some other mode? What other cool things can I do with it? The ESP8266 also seems to create an access point.

Hi! The source code has been released here. All of the functionality other than AP mode and flashlight mode was implemented server side though, and I'll be releasing the code for that in the next few days (once I catch up on sleep).