The main connector is located at the back of the unit (it's a 3 or 4 in connector). It is the via through which you command and control your unit and is the most important connection for power and control.

This page details the high level connection diagrams for the most common types of interfaces.
At the bottom of the page we list the exact pinout so that you ca also build your own cable or interface, if you so desire.

The One Wire TTL interface uses a differential pair to operate in half duplex mode. In this mode operation on a daisy chained environment is possible.

Seed Robotics PDC Interface and supplied Power Adapter

Seed Robotis PC Interface Board + Power Interface Board:
(Using Robotis SMPS2Dynamixel + USB2Dynamixel or U2D2)

Xevel Labs USB2AX:

Connect to an existing Dynamixel Servo Chain or Dynamixel based Robot:

Connector pinout for One Wire TTL UART signal level interface:

Please note:

  • DATA is a bi-directional UART signal used for communication. It operates in the 3.3V - 5V voltage range. Your MCU must normally be in RX mode and change to TX mode when it needs to transmit data. A Tri state buffer can be used to achieve this functionality.
  • Acceptable voltage range is typically 9V~24V. Please refer to the documentation of your specific model for the exact voltage range accepted.
  • The GND signal MUST always be connected to the RS485 converter; failure to do so may result in damage to the unit (or at least communication failures)
  • When selecting a converter, please observe the maximum baud rate of the converter. Bear in mind the default communication speed on the main port is 1Mbps. (it can be reduced by user setting but performance is degraded)

Copyright © 2015-2023 Seed Robotics Ltd

  • common/connectioninterface_ttlonewire.txt
  • Last modified: 2022/12/21 19:09
  • by Pedro Ramilo