Oh. Parrot made another illogcial mistake. Again on skycontroller 3. The led... bicolor LED. Somebody you has never had to do ten things as once thought of how to use that as an indicator. People. Gages, instruments, switches, levers, etc. There have been lots of studies done to increase proficiency of pilots and operators by laying out where, how big, and how the info is presented. And if i cant tell at a glance what information something is telliing me.. Its worthless. It is nice to have theater lights in my car but i dont waht them to give me info on a car. So. I never use it. I mean it is the only feedback device on skycontroller 3 and it missed. So think again. I need to know at a glance what info it is giving me. I don't want to have to stare at it for several seconds to determine if its alternating colors or blinking just one or whatever the different combinations are. So the led is wortless... especially in the sun you may as well give me a flip up manual to read while flying. It needs to blink bright and quick. I need to spend less than two seconds to see any combo twice. THen I can put it in my eye scan list. I was an expert on conveying information into the brain. Chart, graph, colors, timing, scales, reference book layouts, you name it. The Space Shuttle Operatioins data contains an unbelievable amount of information. Astromauts can execute procedures and utilize the documentation we gve them like they have it memorized. Only better. Because its in a written shorthand form which is a checklist. So, no missed steps. Im refering to the pilots when i say that... Because Ive witnessed their execution of spaceflight critical time operations many times and their performance blows me away. And i wrote some of the procedures. Anyway. My point is. Indicators like the led should convey it's information as fast as possible. Cause the drone is moving and im flying. Vibration feedback (or audible tone) needs to accompany any status changes so that I will look down at the controller. Otherwise. Its just sticks and buttons. I don't need to look at it. My hands are covering it.