When you suspect that there is a problem with the hardware, you can brush in our test firmware

1. Enter boot mode

   1. Connect the board via the USB cable
   2. Press and hold the BOOT(In the middle of the rotary encoder) button , While still pressing the BOOT button, press RST
   3. Release the RST
   4. Release the BOOT button
   5. Upload sketch

2. Download Flash_download_tool

3. Select esp32s3,USB

   

4. Select according to the following figure, finally select START, press RST after writing, or power on again, and then observe the log output from the serial port