Where is the 9th PWM PIN of the mamba h743v4?

ArduCopter
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Hi all, I am using mamba H743v4 for my octoquad, the problem here is that I have used the available 8 PWM pins for the motor and I need another output to control my Servo, as per the description mentioned about hardware of mamba h743v4 on ardupilot,
I noticed that this FC can support up to 9 PWM pins and this 9th pin an LED pin or is it some other pin on the circuit?, if the description is wrong and there is only x8 PWM, can I Use unused UART pins to control my servo?

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No. Connect to the LED pin and try it.

3

Did you read the full description?

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Yes, After reading the description, I thought that PWM 9 output would be on LED pin, I tried connecting and configuring on MissionPlanner with servo9_function = 0 and then tested but it didn’t work. So what is my problem here? Is it possible that I misjudged PWM 9 output and I need to know the exact pins that can control my servo on this FC?

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Yes, I tried connecting and configuring on MissionPlanner, but my servo is not working, maybe that is not the right pin to control the servo?

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The LED pad is the right connector for PWM9. It’s a regular servo, right? What is its purpose / what do you want to do with it?

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yes, it is a normal sg90 180-degree servo, and I just want to control it to rotate simply

9

Set SERVO9_FUNCTION to RCINx, where x is the channel you want it mapped to.

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