Serial connection : Raspi and "conventional" flight controllers

Hi all,
I’m looking for an extermely low cost way to run ArduPilot on a small drone. I’ve looked a little bit into Raspi as a companion computer, but am still curious about the serial connection.

I was wondering if it would be possible to run PyMultiWii on the Rasberry Pi, have it connected to a “normal” flight controller via serial, and then run ardupilot on the Raspi while transmitting instructions to the flight controller. I’m not sure it’s that simple… I was thinking of an old Naze 32 that I have lying around.

Thanks for the help.

That would be overcomplicating things. ArduPilot does support a number of cheap flight controllers - see

Thanks! I’ll check those out.