Anyone ever thought about making the USB port a channel source? This would relate to the USBHID protocol the way the PPM In setting relates to the PPM protocol. The idea is to let people use a computer to control the transmitter, which is a capability that people seem to ask for every so often. I know I've looked for it before.
Edit: the folks using arduino's to add inputs to their Devo 7E's might be interested in this as well, providing it can be made to fit on the 7E.
Do not ask me questions via PM. Ask in the forums, where I'll answer if I can.
My remotely piloted vehicle ("drone") is a yacht.