I've been meaning to work on a tether for fc, a means for it it to interract with the physical world.( I mean, that IS the whole point ) Currently the only "microcontroller" I currently have is a RPI2 which currently has NetBSD installed. I'm working towards three goals right now. 1. Serial communication with DSC PC1500RK security control panel 2. Analog sensor input such as thermistors( using a MCP3008 ) 3. Binary sensors such as door reed switches