First flight went better than I expected! The main lesson learned is that we need a real photographer involved, which will hopefully happen next week. Also some minor adjustments to be made to how the plane flies (centering the rudder better) and to the frame timing (20Hz is much too slow for the plane's speed)

I also had a brainwave about input devices for selecting images, adjusting timings, brightness, blanking periods, etc... I'm going to build a little pendant with a 3.5mm jack, which will connect via trainer cable to the RC transmitter. When I want to update settings on the main board, I just push the "upload" button, tell Joe to hit trainer mode for a second, and the digispark will push the new settings out via PPM over the RC link to the Teensy. This would be too cool for me to not try to make it work, so that's the goal over the next few days.