as far as I can undestand, on Hydra wi-fi is supported via additional XBee adapter module (plus something other that I still have to figure out…), while on other boards like Raptor I can use RS21.
I see from descriptions that RS21 is a “real wi-fi” while XBee is “simply a WiFi to serial bridge”. What are the practical differences between the two modules? What I have to sacrifice if i choose XBee? For instance: will I be able to connect to my home wireless network, access the board from the internet, stream a small video?