Hi I would like to connect independently two circuits, one radio control and the other powered arduino, to the same battery, the issue is that there are components that have to operate with one or other, I mean the plane rc that I am building has lights that I want to control from the rc transmitter and also from joystick or switches from arduino and servos with a switched so if active rc circuit everything moves with the remote control and if active circuit all arduino works with the joystick or switches, anyone know how this can be done? Maybe with a switch?
Maybe you should rephrase your question. It's not quite clear what you want to achieve. Maybe a drawing of the basics (you can scan or take a photo of a hand-drawn one) will also help us to understand.