Thank you for you help, now I solved the problem with esp32_digital_led_lib library. Example: [CODE] #include "esp32_digital_led_lib.h" // Enumberation ob LED's // 9 0 // 8 1 // 7 2 // 6 3 // 5 4 #define LED_PORT 15 strand_t m_sLeds = {.rmtChannel = 0, .gpioNum = 15, .ledType = LED_WS2812B_V3, .brightLimit = 32, .numPixels = 10, .pixels = nullptr, ._stateVars = nullptr}; void Led_Init(void) { pinMode (LED_PORT, OUTPUT); digitalWrite (LED_PORT, LOW); if(digitalLeds_initStrands(&m_sLeds, 1)) { E_TRACE("Can't init LED driver()\n"); } digitalLeds_resetPixels(&m_sLeds); // Set led 7 to red m_sLeds.pixels[7] = pixelFromRGBW(55, 0, 0, 0); digitalLeds_updatePixels(&m_sLeds); } [/CODE]