MAKE Terry Kilby - Wrapping up

Figure 4-9. Finally, we are ready to attach our two subframes to
each other!
Wrapping Up
By now we have our
flight controller firmly mounted to the clean
frame, and have outputs going to the four motors. Double-check
all connections and make sure that the appropriate wires are
going into the appropriate ports. Double-checking now can save
you headaches later.
90 Make: Getting Started with Drones