passionate about merging sustainable construction with digital tools to build smarter, low-carbon structures.

• BIM & VDC: Automation for streamlined workflows
• IFC & Open BIM Interoperability: Deep expertise in IFC, IDS, BCF & bSDD
• IFC on the Web: with IfcOpenShell, Engine Web-Ifc, WebAssembly (WASM), Pyodide, Three.js & more
• Digital Construction Tools: Full-stack development (JS, TS, Python)
• Sustainability Consulting: Reduction of embodied carbon through integrated LCA
• Timber Construction: Integrating digital design with advanced timber-based systems

ifc-lite · live

High-performance BIM viewer with Rust/WASM parser and WebGPU rendering for browser-native IFC visualization TypeScript · Rust · WebAssembly · WebGPU · Fixed first-load IFC colors and transparency issues in WebGPU viewport rendering pipeline | Enhanced Playwright testing config and added detailed benchmark regression analysis to README

Issues · live

Brutalist multi-repo GitHub issue aggregator designed for e-ink displays with zero user input JavaScript · Node.js · GitHub API

ids-flow · live

Visual drag-and-drop editor for buildingSMART IDS specifications with real-time XML export and validation TypeScript · Next.js · React · Radix UI · Implemented sessionStorage persistence to prevent project state loss during navigation between editor and docs | Fixed Ctrl+A keyboard shortcut to select graph nodes instead of text when canvas lacks focus

ifc5cad · live

Browser-based 3D CAD for authoring IFC5/IFCX models using OpenCascade compiled to WebAssembly TypeScript · Three.js · WebAssembly · OpenCascade · Overhauled core geometry handling and fixed direct IFC export dropdown with import reconstruction

ifc-flow · live

Visual node-based tool for IFC file processing with AI integration and Monaco editor support TypeScript · Next.js · React Flow · OpenAI SDK

ifc-rules-demo · live

Select IFC elements using semantic criteria and JSON rules instead of brittle GUIDs. TypeScript-based query engine. TypeScript

ifc-view-gen · live

Generate professional 2D technical drawings from IFC models. Next.js app with fragments, Three.js viewer and SVG export/Airtable connection for building elements. JavaScript

family-calendar · live

Multi-calendar aggregator with touchscreen display for ESP32 or Raspberry Pi. Day/week/month views with auto-refresh and kiosk mode. TypeScript

ifcclash

IFC clash detection tool with Flask API and React 3D viewer for detecting geometric conflicts in building models TypeScript

swiss-zoning-api · live

API for Swiss zoning codes, building regulations, and cadastral data with interactive maps and ÖREB integration TypeScript

ifc-data-browser · live

Browse and query IFC building models as SQL databases in your browser—no installation required. TypeScript

ifc-classifier · live

Web-based 3D IFC classification editor. Assign Uniclass/eBKP-H references to models using Three.js and web-ifc. TypeScript

gh-describer

Auto-generate professional GitHub repository descriptions using AI analysis of your codebase and file structure. TypeScript

model-checker · live

Web-based IFC model validator for BIM projects. Validates against IDS requirements and common issues using client-side WASM processing. TypeScript

ifc-site · live

Converts Swiss cadastral parcels into georeferenced 3D IFC models with terrain from geo.admin.ch APIs Python · FastAPI · GeoPandas · IfcOpenShell · Resolved React Server Components security vulnerabilities in web frontend dependencies

llm-lca-material-match

Match IFC building materials to LCA databases (KBOB, ÖKOBAUDAT) using hybrid embedding and LLM reranking pipelines. Python

birdwatch-ai

Hybrid AI bird identification system combining visual detection (Hailo-8 NPU detection & TensorFlow Lite classification) with audio recognition (BirdNET) on Raspberry Pi 5. Outdoor IP camera, indoor processing, cross-referenced species dashboard & logging. Python

lignum-dpp-bsdd

POC for the integration of Digital Product Passports in IFC using buildingSmart Data Dictionary (bSDD) Python

T-Display-S3-Long

Drivers, firmware, and LVGL examples for the LILYGO T-Display-S3-Long, featuring an ESP32-S3 and 180x640 touch display. C

If you find my free & open-source projects useful, you can support me here:

• 🌐 Visit: lt.plus
• 💬 LinkedIn: Louis Trümpler
• ✉️ Email: louis@lt.plus

"Building the future: from digital tools to sustainable structures."