Visit our Tutorials section to learn more about: Connecting Via Serial Cable.

UDOO DUAL/QUAD features a built in USB to serial interface which is very useful for various reasons: You can use it to connect UDOO DUAL/QUAD via SSH without a network connection, programming the Sam3x (arduino) and access the debug console for troubleshooting purposes.

Connecting via serial will practically result in a shell console, the same as the one you’ll obtain through SSH connection http://en.wikipedia.org/wiki/Secure_Shell.

Connecting via Serial from Windows


  • Connect the serial port of UDOO DUAL/QUAD (CN6) to your PC using the micro USB cable.

  • Power up UDOO DUAL/QUAD

  • Click Open

  • You’re in! You’ll be able to see the startup process and access to the remote shell console on UDOO DUAL/QUAD.


Connecting via Serial from Linux

  • Connect the serial port of UDOO DUAL/QUAD (CN6) to your PC using the micro USB cable.

  • Type


  • You should see this line at the end

 usb 2-2.1: cp21x converter now attached to tty

  • Install minicom:

sudo apt-get update
sudo apt-get install minicom

  • Open Minicom and configure it (only the first time) using the following command:

 sudo minicom -sw

  • Go to “Serial port setup” and edit as follow: Serial Device: /dev/ttyUSB0 (type a key) Hardware Flow Control: No (type f key) Software Flow Control: No (type g key)
  • Press exit and "Save setup as dfl"

  • Exit from Minicom

  • Let’s give proper access permissions to serial port with:

 sudo chmod 666 /dev/ttyUSB0

  • Now we can start listening with:

 sudo minicom -w

  • Power cycle UDOO DUAL/QUAD to see the boot process and connect it to serial console shell

Connecting via Serial from Mac

  • Hit connect, and here you go!
This page was last updated on Monday, March 21, 2022 at 5:19 AM.