MATEK F405-SE + WS2812B strip error

ArduCopter Copter 4.0
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1

I am trying to light the LED strip of WS2812B with MATEK F405-SE.
The connection was made as in the following picture.

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SERVO10_FUNCTION 120
BRD_PWM_COUNT 10
NTF_LED_TYPES 256

When power is applied, only one LED is lit.

why??

2

It’s in the docs External LEDs — Copter documentation

3

thank you it was solved !!