Sorry, wasn't getting responses above and can't get straight answer. I have a quad using Pixhawk. The ESC's are OPTO, therefore I have a BEC on rail to peer them(and power control module for actual autopilot). No servos since it's a quad. Do I need a Zener diode for the rail? Please help, desperately trying to figure out and everyone has a different response:(
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see other post http://diydrones.com/forum/topics/desperately-seeking-clarification...