What is an amateur UAV?
An Unmanned Aerial Vehicle (UAV) is an aircraft that has the capability of autonomous flight, without a pilot in control. Amateur UAVs are non-military and non-commercial. They typically fly under “recreational” exceptions to FAA regulations on UAVs, so long as the pilots/programmers keep them within tight limits on altitude and distance. Usually the UAV is controlled manually by Radio Control (RC) at take-off and landing, and switched into GPS-guided autonomous mode only at a safe altitude. (Confused by all the acronyms and unfamiliar terms in UAVs? A glossary is here.)
---1) An RC plane, muticopter (quadcopter/hexacopter/tricopter, etc) or helicopter. You can buy them ready to fly, including autopilot, here.
---2) An autopilot, such as Pixhawk or APM (see below)
---3) Optional: a useful “payload”, such as a digital camera or video transmission equipment
The DIY Drones community has created the world's first "universal autopilots", ArduPilot Mega (APM) and its next-generation big brother, Pixhawk. They combines sophisticated IMU-based autopilot electronics with free autopilot software that can turn any RC vehicle into a fully-autonomous UAV.
A full setup consists of:
You can buy Ready-to-Fly UAVs (both planes and multicopters) from 3D Robotics:
Last but not Least is Flight Safety
The FAA link below, offers safety suggestions to the DIYDrones community.
This URL points to the FAA's friendly and short advice on how to operate model aircraft/UAS safely. Hopefully, they'll keep this link active and current as the rules evolve.
Note: Credit goes to the respective authors of these blogs/comments.