Dynamixel MX-106T Actuator
Dynamixel MX-106T Actuator

Dynamixel MX-106T Actuator

Robotis | A-000000-00177

The MX-106T is a Dynamixel servomotor, with high-level control features and very precise. It is by far the most powerful of the Dynamixel servomotors.

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The Dynamixel servomotors

Dynamixel Servomotors main features
  • All-around assembling structure: you can make robots of various forms as using different option frames.
  • Powerful feedback : It can read current position of Dynamixel or speed as well as various information such as internal temperature, supply voltage, target position.
  • Simple connection structure: Wiring is simple because it is linked by Daisy Chain.
  • Alarm function: When internal temperature, torque, supply voltage etc. escaped appointed range, it gives feedback about that situation. Also in such emergency situation, it flash LED or be Torque off.
  • Compliance configuration: It can configure the compliance to control the position.
  • Torque set up : Torque can be set up by 1023 steps from maximum Torque to free run state.
  • Low-electric current/high voltagedrive : Its efficiency is high because it runs by high voltage and it improves stability of robot system that is formed by Dynamixel because current consumption is low.
  • Status LED : It has LED that can check state of the Dynamixel.
  • Drive by network: Dynamixels have unique ID and are controlled by Packet communication on a bus. It supports network of TTL, RS 485, and CAN etc. according to model.

Dynamixel actuators are controlled by Packet communication

This video illustrates the capabilities and the existing application for Dynamixel servomotors:

Programming the Dynamixel servomotors

The servomotors have to be linked to a main controller (CM-900, CM-700, CM-5, CM-510 or CM-530) to be commanded. The progams are made with RoboPlus, which allow really easy programmation, without much previous knowledge.

The most recent main controllers support embedded C and there is a SDK for you to developp your own applications.

The Dynamixel MX-106T servomotor

The MX-106R and MX-106T are new Dynamixel servomotors in the MX range. They replace and improve the EX-106+ servomotor with a new absolute contactless encoder with 12 bit resolution (4096 positions), can be positionned over 360° in joint mode (251° previously), can be speed controlled in wheel mode and estimate their torque based on current.

Moreover they are controlled with a PID (proportional integral derivative), which parameters can be set servomotor by servomotor. Admissible values are between 0 and 255 and the PID coefficients are modified with the following formulas:

pid controller for the MX-106T servomotor Dynamixel robotis

coefficients calculation for the pid of the MX-106T servomotor dynamixel robotis

Two MX-106T Dynamixel servomotors can be used in 'dual mode', where the slave servomotor reproduces exactly the moves of the master one (or the inverse of the moves if the 'reverse' option is activated)

Two MX-106T Dynamixel servomotors connected in dual mode

The case of the EX-106+ has also been lightly modified, the MX-106T servomotor is therefore not compatible with the HN05-N101/T101 horn.

modifications in the case of the MX-106T Dynamixel servomotor robotis


The Dynamixel servomotor MX-106T supports the TTL communication protocol (when MX-106R supports RS485 communication) with high speed (3Mbs), it is compatible with the CM-510, CM-530 and CM-700 main controllers. Warning, the operating voltage is not the same as the EX-106+ voltage.

Technical specifications of the Dynamixel MX-106T actuator

  • MCU : ST CORTEX-M3 (ST32F103C8 @ 72MHZ,32BIT)
  • Motor : Maxon
  • Position sensor : Contactless absolute encoder (12BIT,360 DEGREE)
  • Stall Torque : 8.0N.m (at 11.1V, 4.8A), 8.4N.m (at 12V, 5.2A), 10.0N.m (at 14.8V, 6.3A)
  • No load speed : 41 rmp (11.1V), 45 rmp (12V), 55 rmp (14.8V)
  • Résolution : 0.088° x 4.096
  • Running degree : 360°
  • Control algorithm : PID
  • Command :digital packet, baud rate : 8000 bps ~ 3 Mbps
  • Protocol : Half duplex Asynchronous Serial Communication (8bit,1stop, No Parity)
  • Link (physical) : TTL Level Multi Drop Bus
  • Weight : 153g
  • Voltage : 10 ~ 14.8V (Recommended voltage 12V)
  • Gear ratio : 225 : 1
  • ID : 254 ID (0~253)
  • Feedback : Position, Temperature, Load, Input Voltage, Current, etc.
  • Ide current : 100 mA
  • Dimensions : 40.2mm x 61.1mm x 46mm (exact dimensions available here)
  • Material : Full Metal Gear, Engineering Plastic Body

All the technical specifications of the Dynamixel MX-106T actuator are available on the website of the manufacturer at http://support.robotis.com/en/product/dynamixel/mx_series/mx-106.htm

Comparing the various Dynamixel actuators

This document offers an overview on the characteristics of all the Dynamixel servomotors.

Comparison table between all Dynamixel servomotors robotis
Comparison between all Dynamixel servomotors

The chart below compare the Dynamixel actuators on their performance. Servomotors are differentiated by communication type (and the MX range proposes both protocols).

Data sheet

Tension de fonctionnement [V]
10 - 14.8 V
Couple de décrochage [N-m]
7 - 8.9
Courant de décrochage [A]
Vitesse à vide [rpm]
40 - 49
Protocole de communication


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