Sweet! That looks really good!
Thank you Mirko for your efforts to port APM accross already!
With these types of processors there's often a mux where it might be possible to reroute the sensors and put them on a SPI bus instead? It might cost one of the SPI ports, but they're not commonly used on a cable/connector anyway. Might be worth a look.
So I'm assumming that APM is running on the main A8 CPU in linux and that the PWM/sensors is being driven by the PRU's? Or is APM running on the PRU's? I also see it has a M3 MCU. It would be good to have the A8 just running imaging and comms. A camera CSI would of been nice because then the USB would be free for 3G etc.
It's cool that it has a 4A UBEC onboard, lipo charger, wifi mesh (802.11s) and even the 4 DCmotor channels. Do you know their current rating at 2S, I can't find it in the spec? With all that "in the bag" it should make itself popular with the educational market, for kids to get into coding/automation etc. all on a budget. You really only need 4 DC motors, a battery and something to hold them together to make this thing fly! Nice!
In that regards it's a shame they didn't leave the HDMI on there, as that could of turned this drone into a home coding SBC...