Available now · Ships October

A robot arm
that you could
build and train.

  • 6+1 DoF
  • 1.5 kg payload
  • RobStride QDD · CAN bus
[ BUY DIY KIT · $999 → ] See how it is built ↓
$999 DIY kit · you assemble it
ships October · + $129 shipping
MakerMods Maker Arm shown in profile with its black 3D-printed structure and RobStride actuators
MK.A / PROTOTYPE 01
TELEOP · 1x
[ ARCHITECTURE · 02 ]

Printed structure.
Industrial joints.

The frame is printed so you can reprint and revise it. The actuators and control bus are picked for real Physical AI development, with hardware safety built in.

Maker Arm shown fully assembled with its gripper, joints, and base visible
[ A ]

1.5 kg payload.

RobStride 02 actuators drive the shoulder pitch and elbow, where the load sits. Compact RobStride 00s handle the remaining joints and gripper.

[ B ]

3D-printed frame.

3D-printed structural parts make the arm easy to modify. You can reprint or revise parts as your project changes.

[ C ]

Runs on CAN bus.

CAN communication keeps wiring and control direct across the full 6+1 DoF chain.

[ OPEN HARDWARE · 03 ]

Every part,
printable at home.

The whole structure is yours to print, revise, and reprint. Files, build guide, and kinematics are all published.

Follow MakerMods on GitHub →
CAD render of the Maker Arm showing every printed structural part, the QDD actuators, gripper, and base MK.A / FULL ASSEMBLY CAD
Every structural part on the arm is printable at home.
  1. 01Printable partsSTL files on MakerWorld · Printables · GitHub
  2. 02Build guideStep-by-step assembly, published on tnkr.ai
  3. 03Video walkthroughThe full build, start to finish, on YouTube
  4. 04URDFKinematics for simulation
[ OPEN SOFTWARE · 04 ]

Software roadmap.

The SDK lands first so you can drive the arm. LeRobot follows, so you can teach it.

[ VIEW ON GITHUB → ] Open source · build, inspect, and contribute
terminal01 · clone + install
git clone https://github.com/makermods-robotics/maker-arm-sdk && cd maker-arm-sdk
python3 -m venv .venv && source .venv/bin/activate
python -m pip install -e ".[dev]" && maker-arm doctor
github.com/makermods-robotics/maker-arm-sdk ↗

  1. First

    Maker Arm SDK Alpha

    Drive the arm from Python. Read joint state, send position and torque targets across the CAN chain, work the gripper, and script a full routine in a few lines.

    • Python
    • macOS · Ubuntu · Windows

  2. Then

    LeRobot integration Alpha

    The path into Physical AI. Teleoperate the arm, record demonstration datasets, train a policy on them, and evaluate it back on the hardware.

    • Record
    • Train
    • Evaluate
[ 01 ] You build it

DIY
assembly kit

$9993D-printed · ships October · + $129 shipping

Maker Arm kit laid out on a bench: 3D-printed structural parts, boxed RobStride actuators, bearings, hardware, and cabling
[ FLAT-PACKED · UNBUILT ]

Every 3D-printed part, bearing, screw, actuator and cable, packed flat. You assemble the whole arm from scratch, and you know every joint by the time it first moves.

  • 013D-printed structureFull set of printed parts for the 6+1 DoF frame
  • 02RobStride actuatorsRobStride 02 and 00 QDD units for every joint
  • 03Bearings and hardwareBearings, fasteners, and joint hardware, sorted
  • 04Wiring and CAN harnessCabling for the full CAN chain, plus the adapter
  • 05Gripper and wrist cameraThe end effector set, ready to fit
  • 06Build guide and SDKStep-by-step assembly, then drive it from Python
[ BUILD IT · $999 → ]
[ 02 ] We build it

Fully
assembled arm

$1,199bench-tested · ships October · + $129 shipping

Maker Arm fully assembled and bench-tested, shown from the side
[ BUILT · WIRED · TESTED ]

The arm arrives built, wired, and bench-tested. Open the box, set it on your bench, plug in power, and start working the same afternoon.

  • 01Maker Arm6+1 DoF printed arm, assembled and tested
  • 02Wrist cameraFor task data and closed-loop work
  • 03Emergency stopBench-side hardware safety control
  • 0448 V power supplyMatched to the launch configuration
  • 05CAN adapterThe bridge from your computer to the arm
[ SKIP THE BUILD · $1,199 → ]
[ QUESTIONS · 05 ]

Before you
join the batch.

Both. The $999 DIY kit ships as a complete set of printed parts, actuators, and wiring for you to build yourself. The $1,199 build arrives assembled, wired, and bench-tested, ready to develop on as soon as it is set up.
Shipping is a flat $129 per arm on both the $999 DIY kit and the $1,199 assembled build, added at checkout. Mainland China, Hong Kong, and Macau ship at a lower local rate of 300 RMB / HKD / MOP per arm. Duties and import taxes are the buyer's responsibility.
Maker Arm is rated for a 1.5 kg payload. We are measuring reach on the production-intent prototype now and will add the final figure as soon as testing is complete.
The open release is coming soon. The BOM and CAD files will be published first. Printable STLs will follow, along with a wider software stack and likely LeRobot integration.
Maker Arm uses a mod-friendly 3D-printed structure and RobStride actuators at $1,199. Metal Arm is our $2,499 all-CNC research arm with published lab-grade specifications.
Yes. Two arms can form a bimanual setup. Contact us with your intended workflow and we will help scope the complete configuration.
[ AVAILABLE NOW · SHIPS OCTOBER ]

Build what comes next.

Printed Maker Arm · fully assembled

$1,199[ BUY NOW → ]