7-DOF ×2  //  REACH 633MM  //  PAYLOAD 4.1KG (PEAK 6.0KG)  //  BILATERAL FORCE FEEDBACK  //  IN-HAND CAMERA  //  KER LEADER ARM  //  OPENARM CELL  //  100% OPEN-SOURCE  //  7-DOF ×2  //  REACH 633MM  //  PAYLOAD 4.1KG (PEAK 6.0KG)  //  BILATERAL FORCE FEEDBACK  //  IN-HAND CAMERA  //  KER LEADER ARM  //  OPENARM CELL  //  100% OPEN-SOURCE  //  
RESEARCH-GRADE BIMANUAL PLATFORM

OpenArm 2.0

Beyond 1.1 — more value.

We refined every rough edge of 1.1 and added a variable-controlled Cell environment. A next-generation humanoid arm built to run reinforcement and reward learning the way they should.

7-DOF ×2REACH 633mm PAYLOAD 4.1kgBILATERAL FEEDBACK
Get in touch →
// AXIS_VIEW RENDER: REALTIME
STATUS: ONLINE
DRAG TO ROTATE · explore in 360°
// 3D EXPLORER — spin it yourself

Explore the hardware

// CELL + OPENARM_2.0
Drag · 360°

OpenArm Cell + Arm

The full evaluation setup, with OpenArm 2.0 installed inside the Cell.

// CALIBRATION_JIG
Drag · 360°

Calibration Jig

A zero-position jig that physically locks the gripper to its exact CAD-defined angles, calibrating out assembly errors and tolerances for a consistent dataset.

01 / CORE STRENGTHS — what stays

What still makes OpenArm great

Affordable

Research-grade performance at a fraction of a high-end humanoid’s cost.

Bilateral force feedback

Leader and follower trade force back and forth, conveying the feel of contact and pressure as-is.

Fully open source

Everything is open — CAD, firmware, and control code.

Built for physical AI

Freely test reinforcement learning, imitation learning, and other AI approaches.

02 / SYSTEM UPGRADES — key changes

The key changes beyond 1.1

U-01

Compact gripper + built-in camera

A simpler actuation makes the gripper noticeably smaller. The in-hand camera captures the exact view at the moment of grasping, and the fingers can be swapped to fit each task.

U-02

Stereo vision + in-hand camera

Add the recommended top-down ZED stereo camera to the gripper’s built-in in-hand camera, and you capture depth-rich training data.

U-03

Stronger learning with Cell · KER

Pair the variable-controlled OpenArm Cell with the motorless KER leader arm and you get a sturdier learning setup that anyone can reproduce identically.

03 / EXPANSION MODULES — add-ons

An expandable setup

// MOD_CELL
Coming soon

OpenArm Cell

An evaluation cell that keeps background, lighting, cameras, and arm position identical every time. It creates a standard environment for fair, automated model comparison.

Z-axis liftReach-in safety stopZero-position jig
// MOD_KER OpenArm KER
COMING SOON

OpenArm KER

A motorless leader arm (KER) with the exact same joint structure as 2.0. No motors means it’s light, so you can operate it for hours without fatigue.

MotorlessLow-fatigue teleopCAD·BOM coming soon
04 / PRE-ORDER

Be the first to meet OpenArm 2.0

Check the configurations yourself, add the setup you need, and leave a pre-order. Pricing is provided as an individual quote based on your configuration.

Browse pre-order options →
// Opens the dedicated pre-order store (pricing by quote)
OPENARM 2.0 · LIBERTRON · Research · Education · Development platform