https://github.com/virtualabs/f1rmware/tree/master/telegraf
https://github.com/rad1o/f1rmware/pull/124 (in rfapp, by @hilse)
https://github.com/ikarus23/wireless_massage_egg/tree/master/gnuradio (will be merged soon?!)
https://events.ccc.de/camp/2015/wiki/Projects:Teledildonics
https://github.com/rad1o/f1rmware/pull/53 (now part of upstream f1rmware)
Check out this list for suitable (<32kByte!) MOD files:
http://modarchive.org/index.php?request=view_member_favourites&query=88778
https://github.com/rad1o/f1rmware/pull/30 (now part of upstream f1rmware)