https://www.wsj.com/articles/snap-pixy-review-dont-call-it-a...
Excerpt:
Turn the Pixy’s dial to one of its four flying modes..
Hover: Here, the Pixy reverses a couple of feet and floats in front of you like a hummingbird. In the Snapchat app, you can customize, up to 60 seconds, how long you’d like it to capture video
Reveal: Like a traditional drone shot, the Pixy reverses and flies upward to reveal your scene. My favorite of the bunch, it won’t fly more than 30 feet away from you (you can shorten that distance in the app) and it only goes about 15 feet up in the air.
Follow: The Pixy will follow you around very, very slowly.
Orbit: The Pixy will reverse to 5, 8 or 15 feet (whichever you set in the app) then make a full circle around you before flying back.
There are two cameras on the Pixy: One points down, stabilizing the drone and detecting your hand, aka its landing pad. The other faces outward, tracking you and capturing video and photos. Flight patterns are preprogrammed so it doesn’t rely on any additional sensors for navigation or collision avoidance.