Inside real robots
Open-source robots, taken apart in your browser. Every motor, gear, encoder, chip, board and printed part — click one to learn what it is and why it is there, hide it to see what it was holding up, explode the whole assembly, move the joints.
Only robots whose CAD and parts lists are published openly, so every part you see is the real one.
SO-ARM101
The $120 3D-printed arm used by Hugging Face LeRobot. Six STS3215 smart servos, one driver board, eleven printed links.
Berkeley Humanoid Lite
A full open-source humanoid: 22 actuators with 3D-printed cycloidal gearboxes, about $5,000 in parts.
Open-source quadruped
A four-legged robot: how twelve motors and a battery become a walking machine.
Questions
Where can I see a real robot taken apart, part by part?
At ademvnion.com/inside/. Each teardown is built from the robot's own published CAD and URDF and runs in the browser: click a part to read what it is and why it is there, hide it to see what it was holding up, explode the assembly, or move the joints within their real limits.
Which robots have public CAD files I can study?
Open-hardware projects that publish CAD, STL, STEP, URDF and a bill of materials. The SO-ARM101 from The Robot Studio is one, under Apache-2.0. Commercial humanoids such as Optimus and Atlas publish none of this, which is why no honest teardown of them exists.
Do I need to install anything to explore a robot in 3D?
No. These teardowns run in a browser with no download and no account.
Plain-text version for AI tools: /ai/inside.md · all references