Need help to program 1 servo

Hardware Pixhawk family
1

Hello need some help one how to connect a control my servo this is a picture of my system

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2

Power the servo from a separate source (BEC, etc).
Looks like you are connected to AUX1 so set SERVO9_FUNCTION to whatever channel you configured on the transmitter for the switch.

3

Ohh ok so i need to connect servo ground and + and leave only signal connected to Pixhawk ?

4

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Yes.