Sure, not much to it, and built only for the one fan I am fooling with now.
Subsequently, I also made some edits to the device driver posted here to provide 4-speed support (target dimmer set points for each of the 4 speeds, as well as the default 3 speed setpoints). That's working well, although I didn't add a capability.fanControl to the device driver. The app provides a bridge between a virtual fan controller device (which of course has "capability.fanControl"), and a dimmer device. Then one can manipulate the virtual fan controller via selection of the named speed settings.
The FanController 'proxy' app code can be found here.
