I wanted a TNC for mobile use, that also had an inbuilt GPS unit. The SainSonic AP510 does this well enough, but is only 1W, barely able to get out.
So, I built a script that automagically turns my Raspberry Pi ($35) + Case ($9) + USB GPS ($15) + Wifi Adapter ($7) + USB Sound card ($6) into a Wifi-enabled TNC, with GPS!
http://www.coreyreichle.com/2016/05/...amateur-radio/
The github repo is open, and pull requests are welcome. Once I get a webpage built to manage the direwolf modem, I'll also push that over to direwolf. Maybe even make an option to sub in soundmodem rather than direwolf at some point. Another future feature is enabling and configuring an optional BBS to get installed/configured.