Troubleshooting

1. Serial port is inactive

Problem :

The port is inactive (grey) and I can not select a port to connect the board.

Solution :

• Close arduino IDE and unplug the arduino board.
• Go to the following page:

How to Install FTDI Drivers

• Scroll in the page and download the driver.

• Run the CDM21228_Setup.exe file. It will install the required driver.

• When the driver is installed, open arduino IDE and select the port that appear.

<aside> ⚠️ If this does not work and you can not select a port, please follow the next section!

</aside>

2. My board is not detected by serial port

Problem :

The port for my arduino board does not appear in serial port list after I added FDTI driver, but other ports show.

Solution :