ldraw-mecha
AI agent tool for animating LEGO mechanisms in Blender.
DesignOpen sourceOpen source · verified#blender#lego#ai-agents
Listed by the ProductPerch team from Hacker News · not launched here yet
What is ldraw-mecha?
ldraw-mecha is an open-source agent tool that creates animations of LEGO mechanisms using Blender. Users provide an LDraw model file, and the system analyzes the source code to identify mechanical parts and their interactions.
The agent generates Python scripts for Blender to build control rigs and produce animations based on the planned component movements. It bundles required dependencies like Blender, LeoCAD, and the LDraw parts library into the project directory to keep the host system clean.
Installation includes platform-specific setup scripts for macOS, Linux, and Windows via WSL2. The repository provides a model selector interface, example animations, and documentation for running the workflow.
ldraw-mecha features
- Analyzes LDraw .mpd files to infer mechanical structures
- Plans interactions between LEGO components automatically
- Generates Python code for Blender rigging and animation
- Bundles Blender, LeoCAD, and LDraw libraries locally
- Provides a local model selector interface for previewing
- Includes setup scripts for macOS, Linux, and Windows WSL
Who uses ldraw-mecha and for what
- Creating stop-motion style videos of custom LEGO Technic builds
- Visualizing how complex gear and linkage systems function before building
- Generating tutorial animations for instructional LEGO engineering guides
- Prototyping mechanical interactions for digital LEGO concept designs
ldraw-mecha FAQ
Is ldraw-mecha free?
Yes, the project is released under the AGPL-3.0 license and can be downloaded and used without cost.
Is ldraw-mecha open source?
Yes, the source code is publicly available on GitHub under the AGPL-3.0 license.
What is ldraw-mecha used for?
It is used to analyze LDraw LEGO model files and generate automated Blender animations of the mechanical parts.
Does ldraw-mecha work on Mac?
Yes, the repository provides a dedicated setup script for macOS to install the required tools and dependencies.
How do I install ldraw-mecha?
Clone the repository and run the appropriate setup script for your operating system. The process installs all dependencies locally and requires Python 3.12 or newer.
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