thick tape). Make sure that the forward arrow on the APM flight
controller is pointing forward on the UAV, and that the flight con-
troller is positioned directly in the center of the frame before
pushing it into place (see Figure 4-5).
Which Way Is Forward?
Recall from previous chapters that our airframe has a defined
front and back. The back has two long, narrow battery-strap
slots between the two rear stando mounting holes. These will
appear on both the top and bottom plates of the clean frame.
Another indicator is that the booms fold backward on the
frame. Yet another indicator is that the large hole that the cam-
era mount will cover (covered in Chapter 8) in the clean frame
sits in the front. Make sure that your autopilot is pointing
toward the front—look for the forward arrow on the APM case—
and is as centered as possible. Pointing it in the wrong direction
will make for a very short maiden flight!
Figure 4-3. Cut o about an inch of double-sided tape to use in
the mounting of the APM.
84 Make: Getting Started with Drones
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