ARX A5
A modular arm whose modules can each be replaced on their own, with torque-level control in its Python SDK.
Key facts
ARX A5 is a modular arm released in April 2026. Each module can be replaced independently. Its Python SDK offers joint position control with gravity compensation, end-effector pose control and MIT-mode motor control with stiffness, damping, position, velocity and torque.
- Design
- Modular; modules replaced independently
- Power
- 24 V (XT30 connector)
- Signal
- CAN over USB Type-C on the base
- Control modes
- Joint position, end-effector pose, MIT mode
- Released
- April 2026
Specifications
Published by ARX or in the SDK documentation. Figures not published are left out; ask for the full spec sheet.
| Design | Modular, each module replaceable on its own |
|---|---|
| Power input | 24 V via XT30 |
| Signal | USB Type-C CAN board in the base |
| Control modes | Joint position with gravity compensation; end-effector pose (xyz + quaternion or roll-pitch-yaw); MIT mode (kp, kd, position, velocity, torque) |
| Feedback | Joint position, velocity and current; end-effector pose |
| Tools in SDK | Forward kinematics, gravity compensation, configurable end-effector mass |
| Desktop setup | Left arm, right arm and a head arm, clamped to the table |
What it's used for
- Torque-level control research
- Desktop bimanual setups with a camera arm
- Labs that want to swap a module rather than an arm
Questions about A5
What does "modular" mean for A5?
ARX states that all modules can be replaced independently, so a worn module can be swapped without replacing the arm.
Can A5 be controlled at torque level?
Yes. The A5 Python SDK has an MIT-mode call that sets stiffness (kp), damping (kd), position, velocity and torque per joint.
Is there a dual-arm A5 setup?
Yes. The SDK documents a desktop setup with a left arm, a right arm and a head arm on separate CAN channels.
Sources
Last updated October 10, 2026 · facts from the sources listed on this page
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