I am using the Arduino Servo library to control two servo's on a RC-car. One of the servo's (for steering) is without ESC (as it should be), so easy to connect and power.
However, the motor that provides the speed uses a ESC with BEC. Which means that the 3 wires coming out of the ESC (red, black and white, which I need to send pulses to) are providing me with current. This would be fine, I could use BEC to power my Arduino, but I like battery life and I have a totally different plan..
So now my actual question; how do I connect the ESC so that I would not have to use the BEC's power supply. I can not imagine only connecting the ground and signal wires, so I need a little help :-)