The author described briefly about the challenges involved in combining a light sensor with a LED.Like we know that combining a mic and a loud speaker in a audio system will bring a big howling sound due to acoustic feed back. Many techniques are adopted to reduce the same or totally to remove it. Similarly combining a light sensor with a LED also will produce a lot of light feed back.
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.