Ember
ExploreRobotics
Robotics Open sourceLive

OpenArm

A $150 open-source robotic arm with real AI dexterity.

OpenArm preview
Arta Rahimi
Tbilisi, Georgia 🇬🇪

What I’m building

OpenArm is a 3D-printable robotic arm that costs under $150 and learns to manipulate objects using an open vision-language-action model. Every part, every weight, every training pipeline is open — so a school or a hobbyist can have a capable robot, not a toy.

Why I’m building it

Real robotics education is gated behind $20,000 arms. I learned on junk I soldered myself. Imagine what people could learn if a genuinely capable arm cost less than a phone and the brain was free to download.

What the tokens unlock

Credits fund the simulation compute and GPU training to teach the arm grasping and simple tasks, plus the model runs that let it follow spoken instructions.

  1. 1
    Train grasping in simulation2M
  2. 2
    Sim-to-real transfer on the physical arm1.5M
  3. 3
    Language-instruction following + release the model1M

Tools & models

Vision-language-action modelSim computeGPU training
artar/openarm

The builder

Arta Rahimi

Tbilisi, Georgia 🇬🇪

Robotics hobbyist gone serious. Cheap arms, open firmware, real dexterity.

GitHub connectedOpen-source contributor

Updates

  1. It picked up a cube. On purpose.

    First successful sim-to-real grasp. Wobbly, but real. Video in the update feed.

Supporters

34 people have pledged so far.

  • Ken WatanabeTokyo, Japan· 2d ago

    “Rooting for you. This should exist.”

    500KGemini
  • María TorresBarcelona, Spain· 4d ago
    100KAI Credits
  • Anonymous supporter· 6d ago

    “Take my credits and go build it.”

    500KOpenAI
  • Anonymous supporter· 8d ago
    250KCompute
  • Anonymous supporter· 10d ago
    1MClaude

Discussion

Ask the builder a question or leave encouragement.

  • No comments yet. Be the first to say something.