4 tools. All free. All in your browser.
No installs, no Docker, no driver updates. Open a tab and go.
The Simulator
Rapier 3D physics + a Monaco editor. Run a robot in your browser. Click a preset, fork it, ship.
URDF Viewer
Drop a .urdf file. Drag joint sliders, watch the kinematic chain move. Inspect frames, mass, collisions.
Browser CAD
replicad + manifold. Talk to an AI assistant, export STL/STEP/URDF straight into the simulator.
Tutorials
13 tracks. From the math you actually need to VLA models and Isaac Lab. Structured. Free.
Articles that actually ship.
Honest write-ups about what we're building and what we've learned. No filler, no 4-hour YouTube playlists pretending to be curriculum.
The RobotForge curriculum is complete: 136 lessons, 13 tracks, free forever
Six weeks ago this site had one tutorial. Today it has every topic in robotics — from forward kinematics to humanoid whole-body control to BOM cost engineering. Here's what shipped and how to use it.
Lesson 1: Meet the ESP32-S3
A beginner-friendly walkthrough of the ESP32-S3 microcontroller — what it is, why it's the best chip for your first robot in 2026, how to install the toolchain, and how to blink your first LED. Part of the 'Build Your First Robot' course.
Welcome to RobotForge
A community for DIY robotics and physical AI. Here's what we're building and why.
Why open robotics matters more than ever
Figure, Tesla, 1X — the humanoid race is closed-source. Here's why the open movement is still the one that wins.
A preview of the RobotForge simulator
Browser-based robot physics with Rapier 3D, a Monaco editor, and a JavaScript control loop. Here's what's coming.
Your first 20 minutes with ROS 2
No robot required. Install, launch turtlesim, publish a velocity message. The fastest honest intro to ROS 2.
Robots people actually shipped.
BOMs, build logs, things that broke and why. Real projects from real benches.
Desk-sized quadruped for under $120
8 hobby servos, an ESP32, and a 3D-printed frame. The cheapest functional quadruped I could design.
A 2-DOF arm you can train in the simulator first
Start with inverse kinematics in RobotForge's simulator. Then buy the servos. Fail cheap.
All materials free, forever. Subscribers keep it running.
Tutorials, simulator, viewer, CAD — never a paywall. The Subscriber plan unlocks the paid project courses, adds a few perks, and helps fund the site. Cancel anytime.
- All 136 tutorial lessons
- All articles + community projects
- Browser simulator, viewer, CAD
- AI features — bring your own provider key
- STL export + URDF export
- Community Discord
- Free preview of every paid course
- Everything in Free
- All paid project courses, present and future
- Support the project + keep the lights on
- Cloud-save your CAD scenes across devices
- STEP export (engineering-grade ISO 10303)
- Subscriber badge on your profile
- Cancel anytime
💡 AI features are bring-your-own-key on every tier — you control your provider and your spend.
The simulator is Apache 2.0. The tutorials are free. Forever.
No paywall on lessons, no closed-source viewer, no "login to preview." Read the code on GitHub. Join the Discord. Ship your own build to the showcase.
One email a week. No spam.
New tutorials, new builds, the occasional rant about why half the humanoid demos are scripted.