• open CLion and create PlatformIO project there. You should have setup() and loop() created for you
• in terminal search for libraries you need. Example: pio pkg search irremote
• add in platformio.ini

lib_deps =
     <ADD YOUR LIBRARY HERE>

• In CLion: tools → PlatformIO → Re-Init

• list boards: pio boards esp32
• create new directory: mkdir path_to_the_new_directory
• go to it: cd path_to_the_new_directory
• initialize board: platformio project init --board esp32dev 

upload_port = /dev/ttyUSB*
upload_speed = 921600
monitor_speed = 115200
build_flags =

; https://docs.espressif.com/projects/esp-idf/en/latest/get-started/get-started-wrover-kit.html#rgb-led

-D LED_BUILTIN=2

• install example: platformio lib -g install https://github.com/Makuna/NeoPixelBus.git
  

• then add to platformio.ini NeoPixelBus

• pio run - process/build project from the current directory
• pio run –target upload or pio run -t upload - upload firmware to a target
• pio run –target clean - clean project (remove compiled files)
• pio run –help - additional information
• pio device monitor - serial port

•  change serial port
•  monitor
• add library

• no built-in LED.
• https://components101.com/microcontrollers/esp32-devkitc
• the “right” way to do neopixel (where <X> can be 0 through 7 and PixelPin can be any pin below 32):

NeoPixelBus<NeoGrbFeature, NeoEsp32Rmt<X>Ws2812xMethod> strip(PixelCount, PixelPin);