Neopixel stick doesn't work with Pixhawk 6C Mini

ArduCopter
,
1

Hello everybody,

I have connected a neopixel stick (WS2812B-8) to my pixhawk 6c mini’s AUX 3 port and set the following parameters:
NTF_LED_LEN=8
NTF_LED_TYPES=65793 (included neopixel on the bitmask)
SERVO11_FUNCTION=Neopixel1

I use holybro qav250 frame kit, it uses power module 06.

I see NeoP in the messages, but leds don’t work.
This is my first quadcopter, so I don’t know how can I investigate this issue?

Thank you!

These are the messages:
9/9/2024 12:48:12 PM : Frame: QUAD/X
9/9/2024 12:48:12 PM : IMU0: fast sampling enabled 2.0kHz
9/9/2024 12:48:12 PM : RCOut: DS300:1-4 PWM:5-8 NeoP:9-12 PWM:13-16
9/9/2024 12:48:12 PM : IOMCU: 410 2003 411FC231
9/9/2024 12:48:12 PM : Pixhawk6C 00290022 3133510F 31343630
9/9/2024 12:48:12 PM : ChibiOS: 6a85082c
9/9/2024 12:48:12 PM : ArduCopter V4.5.5 (142aece2)
9/9/2024 12:48:11 PM : Frame: QUAD/X
9/9/2024 12:48:11 PM : IMU0: fast sampling enabled 2.0kHz
9/9/2024 12:48:11 PM : RCOut: DS300:1-4 PWM:5-8 NeoP:9-12 PWM:13-16
9/9/2024 12:48:11 PM : IOMCU: 410 2003 411FC231
9/9/2024 12:48:11 PM : Pixhawk6C 00290022 3133510F 31343630
9/9/2024 12:48:11 PM : ChibiOS: 6a85082c
9/9/2024 12:48:11 PM : ArduCopter V4.5.5 (142aece2)

2

same, I set it up on CubeOrange, supplied 5V to servo rail, and measured the Mateksys 2812-8slim LED strip (8 individual LEDs) 5V is available, but nothing lights up at all.

Arducopter 4.5.7

BRD_PWM_VOLT_SEL,0 #3.3v
NTF_LED_LEN,8
NTF_LED_TYPES,123367 #Bitmask NeoPixel
SERVO11_FUNCTION,120 #NeoPixel1, Aux3

21/01/2025 15:18:02 : IMU2: fast sampling enabled 9.0kHz/2.3kHz
21/01/2025 15:18:02 : IMU1: fast sampling enabled 9.0kHz/2.3kHz
21/01/2025 15:18:02 : IMU0: fast sampling enabled 8.0kHz/2.0kHz
21/01/2025 15:18:02 : RCOut: PWM:1-6 NeoP:9-12 PWM:13-14
21/01/2025 15:18:02 : IOMCU: 420 1001 411FC231
21/01/2025 15:18:02 : CubeOrange 00420019 3239510C 38363839
21/01/2025 15:18:02 : ChibiOS: 6a85082c
21/01/2025 15:18:02 : ArduCopter V4.5.7 (2a3dc4b7)
21/01/2025 15:18:01 : Frame: HEXA/X
21/01/2025 15:18:01 : IMU2: fast sampling enabled 9.0kHz/2.3kHz
21/01/2025 15:18:01 : IMU1: fast sampling enabled 9.0kHz/2.3kHz
21/01/2025 15:18:01 : IMU0: fast sampling enabled 8.0kHz/2.0kHz
21/01/2025 15:18:01 : RCOut: PWM:1-6 NeoP:9-12 PWM:13-14
21/01/2025 15:18:01 : IOMCU: 420 1001 411FC231
21/01/2025 15:18:01 : CubeOrange 00420019 3239510C 38363839
21/01/2025 15:18:01 : ChibiOS: 6a85082c
21/01/2025 15:18:01 : ArduCopter V4.5.7 (2a3dc4b7)

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image1037×334 46.4 KB

[Edit]
Mine issue is a 4.3v issue. Use a Power supply and power up the servo rail at 4.3V works with no parameters change.