Interested in building complex, custom robots, but not sure where to start? Lynxmotion's Servo Erector Set is a modular robotic construction system which allows a near infinite variety of different robots and configurations.

1. SES V2 - Assemblies
2. SES V2 - External Gearing
3. SES V2 - Hardware Table
4. SES V2 - Brackets & Gears Table
5. SES V2 - Wires & Wiring (coming soon)
6. SES V2 - FlowArm V2 Software (coming soon)

SES V2 Kits

When it came to the V1 system, a wide variety of different kits were created; around 16 different robot arm kits, a variety of bipeds, a plethora of hexapods and more. The V2 selection reduces this to one or two of each kind of robot as demonstrations of the SES V2 system. Feel free to imagine your next robotic creation, purchase parts to build it, and then control it! If you want to build a variety of different robots using the SES system, consider the complete Lynxmotion SES V2 Construction Kit which contains a wide variety of parts so you can design and build to your heart’s content.

• Robot arm “name T.B.D.” V2.1 (5 servos)
• Robot power arm “name T.B.D.” V2.1 (5 servos w/ external gearing)
• Robot biped “BRAT” V2.1 (6 servos)
• Robot quadruped “name T.B.D.” V2.1 (12 servos)
• Robot hexapod “name T.B.D.” V2.1 (18 servos)
• Robot humanoid “name T.B.D.” V2.1 (20 servos)
• SES V2 Modular Kit (20 servos)

SES V1 vs SES V2

The V2 system is an evolution of the original SES V1 system and was created with the following goals:

• Evolution and modernization of the SES V1 modular system
• Add features while reducing complexity
• SES V1 backward compatibility whenever possible
• Compatible with other 3rd party manufacturer products / technology
• Improved documentation, design and packaging

The SES V2 system is comprised of the following:

• Lynxmotion Smart Servo (LSS) motors
• Electronics, wiring and power
• Modular metal brackets and hardware
• Software and code examples

The first version of the Lynxmotion S.E.S. system used a variety of Hitec servo motors and semi modular brackets. Most of the SES V1 and SES V2 can mechanically be used together since they both use the Servo Erector Set mounting pattern. The Lynxmotion Smart Servo Motors are designed to be used with the Lynxmotion modular bracket system in order to create a modular robotic building system called the Lynxmotion Servo Erector Set (S.E.S.) version 2. It is therefore entirely possible to create a new robot which uses elements from both the V1 and V2 systems.

Brackets: The first SES system used a variety of different Hitec RC servos. Although a standard case size existed for many, three series of brackets had to be created to accommodate different servo sizes (micro, standard and large). It's difficult to provide an exact number of brackets used in the V1 system as many have one specific application (for example the body panels for a specific hexapod). All in all there are around 70 brackets for use with the V1. Eliminating the servo-specific brackets, the remaining brackets from the V1 can mostly be reused for the V2 system. Additional modular brackets have been created for the new LSS motors.  

Gearing: In addition to the various LSS motors, external gears which can be mounted to the servo as well as using a bracket allow additional building options. 

Hardware: The bracket system of the V1 system used almost 150 different screws, nuts, washers, standoffs and related accessories. The V2 reduces this down to less than 10, focusing on 2-56 and 4-40 screws, nuts and standoffs, and M3 for servo horns.

Electronics: The V1 system was based on the BotBoarduino Arduino-compatible microcontroller and the SSC-32U servo controller. A variety of servo cable extensions, wiring harnesses and related cabling was used to connect everything together. The V2 system focuses on smart servo cables while still permitting RC control. The main electronics for the V2 include only an adapter and power hub. 

Software: Software will include a new version of FlowArm designed for using the smart servos, as well as libraries in Arduino, Python and ROS. Additional software to come.

Electronics Overview

LSS Adapter

This is designed to be used as the main intermediate circuit and can be used in the following configurations:

1. USB cable (from desktop, laptop, tablet etc.)
2. Wireless "Xbee compatible" RF, Bluetooth, WiFi device etc. (sold separately)
3. Arduino shield (using male to male headers)
4. Stacked (using standoffs) above or below a standard Raspberry Pi

LSS Power Hub

The LSS Power Hub is a simple / small circuit allowing various functionality.

1. Connect multiple servos or use as alternative to "Y harness".
2. Separate power feed from a barrel connector
3. "Inject" additional power when many servos are daisy chained
4. Connect LSS motors to normal 2.54mm spaced pins using the RC cable adapter.