I try, as much as possible, to put symmetry in my PCBs. I try to keep trace spacing the same and even put parts consistently oriented. It's not always possible, but I always seem to at least try to do it that way. It is kind of an obsession.
Drones are, in essence, flying autonomous vehicles. Pros and cons surrounding drones today might well foreshadow the debate over the development of self-driving cars. In the context of a strongly regulated aviation industry, "self-flying" drones pose a fresh challenge. How safe is it to fly drones in different environments? Should drones be required for visual line of sight – as are piloted airplanes? Join EE Times' Junko Yoshida as she moderates a panel of drone experts.