OpenArmory

Koch v1.1

by Jess Moss / Alexander KochArmLeRobot: official

5-DOF printed arm on Dynamixel XL430/XL330 servos, the original LeRobot teleop pair. Less torque and base range than the SO-ARM but a gentler path into the Dynamixel ecosystem.

Specs

Type
Arm
Degrees of freedom
5
Actuators
Dynamixel
Open hardware files
Yes
Motors
  • 2× Dynamixel XL430-W250-T (follower)
  • 4× Dynamixel XL330-M288-T (follower)
  • 6× Dynamixel XL330-M077-T (leader)
Simulators
MuJoCo
LeRobot types
koch_follower, koch_leader
Docs quality
4 of 5 for the build guide, editor's rating

Price and where to get it

$199–$477

Leader ≈ $199; follower ≈ $278; pair ≈ $477 (README US BOM)

KitDIY / print it

Sold by

Project

Activity

GitHub stars731
Forks67
Last push24 mo ago2024-09-17
HF datasets766matching “koch”

Fetched 2026-09-15. Dataset count is an approximate name match on the Hugging Face Hub, not a ground-truth tally.

leader-follower3d-printed

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