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#Matlab Library for the Robotis Dynamixel Pro servos

By Federico Parietti


The Dynamixel Pro are high-torque servos manufactured by Robotis. Currently, for these servos there is no official Robotis library for Matlab. I developed this library in order to control my robots ( ), and I wanted to publish it so that anyone using Matlab to control their Dynamixel Pro can do it quickly and without reverse-engineering the Robotis C libraries ( ).

Note: the smaller Dynamixel servos are controlled with the DXL SDK, for which there are extensive online resources (including Matlab code). However, the Dynamixel Pro servos use the DXL SDK 2.0, which is substantially different from the DXL SDK. Any code developed for the old SDK will not work for the Dynamixel Pro. This library has been developed to control the Dynamixel Pro using the DXL SDK 2.0.

Required hardware

In order to use this library to control the Dynamixel Pro servos, you will need:

  • One or more Dynamixel Pro servomotors
  • 24V power supply
  • USB2Dynamixel control device
  • Computer with a USB port


Install the Robotis RoboPlus software.

Connect the Dynamixel Pro servos to the power supply and to the USB2Dynamixel device. Plug the USB2Dynamixel into a USB port in your computer.

Using the RoboPlus software, test all of the connected Dynamixel Pro servos. Detailed instructions can be found on the Robotis website:

Add the library folder to the Matlab path.

Open the file “A_StartAndTest_Example.m” to see some examples showing how to use the library functions to write and read instructions to/from the Dynamixel Pro servos.

All functions are extensively commented.

Notice that the library contains two kind of functions:

  • simple Write and Read functions: to control one Dynamixel Pro servo at a time; multiple servos can still be controlled by the same code (by accessing them one by one), but this quickly increases computing time;
  • Sync_Write and Sync-Read functions: to control multiple Dynamixel Pro servos at the same time; these functions are a little more complicated, but they are essential if you need to control many servos with a faster sampling rate.


This work is provided with a GNU GPL v3.0 license (see attached file). Remember to credit the author of the library when using this work.


This library lets you control the Dynamixel Pro servomotors (by Robotis) from Matlab.







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