RoboSim Tools

Free browser tools · open-source flight-log analysis · Pro AI in development

The robotics engineer's toolbench

Twelve free tools for URDF, CAD-to-simulation, and UAV work — running entirely in your browser, nothing uploaded. Plus open-source flight-log analysis, and a CAD studio on the way.

Browse the free tools → Meet CAD Studio
Raytraced render of a generated enclosure, lid exploded above the base, with the real circuit board seated inside

You built the board.

The mechanical CAD isn't your job.

Describe what you need in plain language.

"Dust-resistant case, demo units in three weeks." The agent reads the rest from your board file.

CAD Studio builds the part.

Real parametric CAD — STEP, STL, DXF. This one took 12.5 seconds, wall-clock.

Validated before you ever see it.

✓ watertight✓ min-wall 2.00 mm✓ zero interference✓ structural SF 2.6

One studio, many parts.

Join the CAD Studio waitlist → Browse the 12 free tools

Raytraced renders of real pipeline output — the ProtoCentral FDC2214 board (CERN-OHL-P v2) and its generated enclosure.

Free tools, verified outputs

Every converter and validator here is checked against independent implementations before it ships — a transposed matrix or a wrong inertia tensor is worse than no tool at all. A few of the twelve:

UAV ArduPilot Param Diff Compare two .param files — changed, added, and removed parameters, each annotated from official ArduPilot metadata. 3D URDF Viewer Articulate every joint with sliders, toggle collision geometry, export a screenshot — all in WebGL. Compute Rotation Converter Quaternion, Euler (12 sequences, intrinsic/extrinsic), matrix, and axis-angle — with a live 3D gizmo. Convert Xacro → URDF Expand properties, macros, conditionals, and multi-file includes in the browser — no ROS install. Validate URDF Validator Structure, kinematic tree, inertia sanity, and joint limits checked against parser-divergence pitfalls. CAD STEP → URDF CAD in, URDF + STL meshes out — mass, COM, and full inertia tensor computed from the geometry.

All 12 tools, with category filters →

Two products where the whole job is the hard part

A converter solves one step and you can check it in a second. These two have to be right about something you cannot check at a glance — a part you will manufacture, or a fault you will act on mid-flight. Both are being built in the open, and neither claims to be finished:

Raytraced render of a generated enclosure with its lid exploded above and the circuit board inside In development CAD Studio AI CAD for electronics & robotics: board file in, validated parts out — enclosures first (STEP/STL/DXF + signed QC report), mounts, brackets, and jigs on the roadmap. Real pipeline output Meet CAD Studio → VIBE.VibeZ RCOU.C3 anomaly · t≈40s 20s40s60s Detectors shipped · AI in development Flight Log Analysis The detectors ship today as flightdx (Apache-2.0): ArduPilot dataflash and PX4 ULog parsing, seven fault detectors, and the measured value printed against the threshold for every finding. The AI layer that reads those findings and names a root cause is what is in development. flightdx and sentinel-realtime are live See what ships today →

Labeled by what exists, not by what is planned — no fake screenshots, no invented testimonials. CAD Studio is unbuilt end to end. Flight-log analysis is half shipped: the detectors are published under Apache-2.0 and run on your machine today, and the AI layer that reads their output is the part still missing. Join a waitlist on either product page (or pricing) to shape what gets built; founding members get launch pricing.

Now callable from your AI agent

Every tool here is also an MCP server — so Claude Desktop, or any agent that speaks Model Context Protocol, can validate a URDF, convert CAD to a robot model, diff ArduPilot parameters, or compute mesh inertia directly, running locally on your machine. Same verified code, no uploads. Set it up →

New to robotics simulation? Start with the wiki

Short, honest reference articles — written from building these converters, not from paraphrasing docs: Robot Simulation 101, URDF vs SDF vs MJCF vs USD, and why simulations explode. Browse all articles →