ยังคอมไพล์ผ่านแล้วครับ แต่มันแจ้งว่า Arduino: 1.8.5 (Windows 10), Board: "DOIT ESP32 DEVKIT V1, 80MHz, 921600, None" Archiving built core (caching) in: C:\Users\vi\AppData\Local\Temp\arduino_cache_701399\core\core_espressif_esp32_esp32doit-devkit-v1_FlashFreq_80,UploadSpeed_921600,DebugLevel_none_ffd5d59c17452cb3b0e034eb152e4810.a Sketch uses 137258 bytes (10%) of program storage space. Maximum is 1310720 bytes. Global variables use 10788 bytes (3%) of dynamic memory, leaving 284124 bytes for local variables. Maximum is 294912 bytes. esptool.py v2.1 Connecting........Invalid library found in C:\Users\vi\Documents\Arduino\hardware\espressif\esp32\libraries\BLE: C:\Users\vi\Documents\Arduino\hardware\espressif\esp32\libraries\BLE _____....._____....._____....._____....._____....._____....._____....._____....._____.....____An error occurred while uploading the sketch _ A fatal error occurred: Failed to connect to ESP32: Timed out waiting for packet header Invalid library found in C:\Users\vi\Documents\Arduino\hardware\espressif\esp32\libraries\BLE: C:\Users\vi\Documents\Arduino\hardware\espressif\esp32\libraries\BLE Invalid library found in C:\Users\vi\Documents\Arduino\hardware\espressif\esp32\libraries\BLE: C:\Users\vi\Documents\Arduino\hardware\espressif\esp32\libraries\BLE This report would have more information with "Show verbose output during compilation" option enabled in File -> Preferences.