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FAQ

Q: After downloading a program to the module, when trying to download again, sometimes it fails to connect to the serial port or the flashing fails?
  • You can press and hold the BOOT button to power on again, and the module can enter the download mode at this time, which can solve most of the problems that cannot be downloaded.
Q: Failed to set up the VSCode environment?
  • First consider the network issue, try switching to another network.
Q: Error when compiling an Arduino program?
  • Check if the Arduino IDE -> Tools is properly configured.
Q: The first program compilation is extremely slow. How to handle it?
  • It's normal for the first compilation to be slow, just wait patiently.
Q: The example program is successfully flashed but won't run?
  • First, check if the example version matches the product version.
Q: Can't find the AppData folder. How to handle this?
  • Some AppData folders are hidden by default. You can set your system to show them.
  • File Explorer -> View -> Check "Hidden items"
Q: How to check which COM port I am using?

  • Windows System:

    • ①Check via Device Manager: Press Windows + R to open the "Run" dialog box. Type devmgmt.msc and press Enter to open Device Manager. Expand the "Ports (COM & LPT)" section. All COM ports and their current status will be listed here.
    • ②Check using Command Prompt: Open the Command Prompt (CMD), type the mode command, which will display status information for all COM ports.
    • ③Check Hardware Connection: If an external device is already connected to a COM port, the device typically occupies a port number. You can determine which port is being used by checking the connected hardware.

  • Linux System:

    • ①Check using the dmesg command: Open the terminal.
    • ②Check using the ls command: Type ls /dev/ttyS * or ls /dev/ttyUSB * to list all serial devices.
    • ③Check using the setserial command: Type setserial -g /dev/ttyS * to view configuration information for all serial devices.