ldraw-mecha

Show HN: Agents infer Lego mechanisms from sources, then animate them github.com/anteloc/ldraw-mecha/tree/v0.5.0 (news.ycombinator.com)

Show HN: Agents infer Lego mechanisms from sources, then animate them github.com/anteloc/ldraw-mecha/tree/v0.5.0

Show HN: Agents infer Lego mechanisms from sources, then animate them Discussion

Show HN: Agents infer Lego mechanisms from sources, then animate them comments · posted on 2026.11.06 at 14:41:20 (c=2, p=4)

Show HN: Agents infer Lego mechanisms from sources, then animate them Hi there :) Around a month ago, I released LDraw Nova, an agentic toolset for assembling LEGO CAD models by generating LDraw source code files. For more details, here's the Show HN post: news.ycombinator.com From the comments, I got the impression that there was quite an interest in seeing not only AI-generated LEGO models, but also AI-animated LEGO ones. I took a look at results from past experiments, and found it feasible to use agentic LLMs for: - analyzing the LDraw source code for LEGO models - reverse-engineer! the mechanisms present by reading the descriptions and sequence for the parts there - and then, animate them via Blender! This new project I'm presenting, LDraw Mecha, is the end result and proof that can be done: - Read specially annotated LDraw LEGO models .mpd source files - Infer the model structure in terms of submodels - Select from those the ones that are mechanisms - Plan animations - Execute them in Blender In summary, from an initial .mpd source file, get a rigged and animated version for the model as a Blender (.blend) file. See the results here: - Repo (v0.5.0): github.com/anteloc/ldraw-mecha/tree/v0.5.0 - Gallery: github.com/anteloc/ldraw-mecha/blob/v0.5.0/GALLER… - Process: github.com/anteloc/ldraw-mecha/blob/v0.5.0/PROCES… This project is very unusual, I'd really appreciate some feedback from the community. Cheers!