Lynxmotion SES-V2 Robotic Arm (4 DoF) w/ Smart Servos Assembled

LynxmotionSKU: RB-Lyn-1040
Manufacturer #: LSS-4DOF-AS

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Sale price ¥132,155

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The  Lynxmotion SES-V2 Robotic Arm (4 DoF) w/ Smart Servos Assembled is Lynxmotion’s 6th generation articulated robotic arm. This assembled version is intended as a hobby / scale version of an industrial robotic arm and is designed around the fully configurable Lynxmotion Smart Servo motors and Lynxmotion Servo Erector Set (SES v2) modular construction system.

Lynxmotion (LSS) - 4 DoF Robotic Arm (assembled) - Click to Enlarge

Given that the structure of the arm is comprised of modular brackets and servos, purpose-built and ultralight aesthetic plastic shells give a futuristic look to the arm without impeding any motion. The shells are held in place using neodymium magnets, and vinyl stickers allow for personnalisation. 

LSS Articulated Arm - Shells 01LSS Articulated Arm - Shells 02

LSS Articulated Arm

This versatile setup facilitates customization and expansion for applications through the use of additional brackets, electronics, sensors and more, and adding additional degrees of freedom or changing the gripper is straightforward.

Lynxmotion (LSS) - 4 DoF Robotic Arm (assembled) - Click to Enlarge

LSS Articulated Arm with and without shells

Although well suited for use on a desk for development and experimentation, the arm can be easily fitted on a mobile robot and powered using a 3S (11.1V) LiPo battery (sold separately) with XT60 connector. The included LSS Adapter electronics board makes connecting to an Arduino shield compatible board, Raspberry Pi, XBee or other serial device easy.

Lynxmotion (LSS) - 4 DoF Robotic Arm (assembled) - Click to Enlarge

LSS Articulated Arm on a Lyxmotion mobile platform

CAD design files, as well as examples using Arduino and Python are available so that students and hobbyists can integrate the arm into their projects. The graphical user interface, LSS FlowArm (created using FlowBotics Studio) makes recording and playing back sequences effortless.

Lynxmotion (LSS) - 4 DoF Robotic Arm (assembled) - Click to Enlarge

LSS FlowArm graphical user interface

The Lynxmotion Smart Servo motors were designed and optimized for articulated robotic joints and ease of use. The custom LSS communication protocol is human readable, uses full duplex (dedicated Tx and Rx lines) and selectable baud rates. Optimize the motion by changing the properties of each servo; anything from setting a maximum speed or angular range to the angular acceleration, holding stiffness and more. Each servo can be queried for a wide variety of real-time values or configured settings, including sensor feedback from the absolute encoder (position, speed and more), current, voltage and temperature.

LSS-ROS2-Arms is an entirely open-source ROS package that allows to control a physical or simulated SES V2 Arm (4DoF or 5DoF version).

SES-V2 Robotic Arm ROS2 Example


  • 5x fully configurable modular smart servo motors
  • Modular aluminum brackets, carbon fiber tubing and more
  • V-style gripper opens from 0 to 180 degrees
  • Compatible with Lynxmotion Servo Erector Set electronics
  • Create sequences using handheld teach mode, coordinates, virtual arm
  • Built-in safety features (over current, temperature, voltage)
  • Easy to understand and human readable LSS communication protocol


  • 3 x LSS ST1 actuators
  • 2 x LSS HT1 actuator
  • 1 x LSS Adapter (electronics interface)
  • 1 x 12V Wall adapter with on/off switch
  • 1 x USB cable
  • All necessary brackets, frame components and hardware
  • Screwdriver (Phillips PH1, PH2)
  • Aesthetic plastic shells with vinyl stickers


  • Reach: 5.819" / 401.80mm
  • Rotation: 360° / Limited by the cable

Lynxmotion (LSS) - 4 DoF Robotic Arm (assembled) - Click to Enlarge

  • Axes: 4 degrees of freedom + 1 (gripper)
  • Max Horizontal Reach: 15.819" / 401.80mm
  • Max Vertical Reach: 19.808" / 503.12mm 
  • Payload: 100g (max reach)
  • Power Supply In: 110V to 240V AC 50/60Hz AC (US type A plug)
  • Power Supply Out: 12V, 6A DC with XT60 connector
  • Weight: 1.43 pounds / 0.650 Kg


Location  Type  Static Torque Max Speed
Base ST1  14Kg-cm 360° /s
Shoulder  HT1  29Kg-cm 360° /s
Elbow  HT1  29Kg-cm 360° /s
Wrist  ST1  14Kg-cm 360° /s
Gripper  ST1  14Kg-cm 360° /s


Note that when operated at lower voltages, the torque and speed are reduced.

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