Ai

High-performance, multi-purpose homelab setup running on a single powerful node with PCI-e GPU passthrough for AI inference, media transcoding, and cloud gaming workloads. Overview Aspect Details Host Dell Precision 3680 CPU Intel Core i9-14900K RAM 128 GB GPU NVIDIA RTX 3090 Ti (PCI-e passthrough) Hypervisor Proxmox VE 8.4.5 VM 16 vCPUs, 40 GB RAM, Ubuntu 24.04.3 LTS Workload Breakdown AI Inference & Language Tasks Ollama - Local LLM inference Whisper / Faster-Whisper - Speech-to-text Piper TTS - Text-to-speech LibreTranslate - Machine translation Stable Diffusion - Image generation Viseron - AI-powered video analysis Immich - AI-powered photo management Ollama API Integrations Open WebUI (ChatGPT-style interface) Nextcloud AI features Perplexica (AI search) n8n workflow automation Home Assistant voice control Media Streaming & Transcoding Jellyfin - Media server with hardware transcoding Viseron - NVR with AI object detection Immich - Photo/video library with ML features Cloud Gaming Stack Sunshine - Game streaming server Xorg - Display server Steam with Proton + Wine Tested: Cyberpunk 2077 Clients: Moonlight (Android TV), Xbox controllers Architecture ┌─────────────────────────────────────────────────────────────────┐ │ Dell Precision 3680 │ │ i9-14900K | 128 GB RAM │ │ Proxmox VE 8.4.5 │ └─────────────────────────────────────────────────────────────────┘ │ │ PCI-e Passthrough ▼ ┌─────────────────────────────────────────────────────────────────┐ │ GPU VM (Ubuntu 24.04.3) │ │ 16 vCPUs | 40 GB RAM │ │ RTX 3090 Ti (24GB VRAM) │ ├─────────────────────────────────────────────────────────────────┤ │ │ │ ┌─────────────────────────────────────────────────────────┐ │ │ │ AI Workloads │ │ │ │ ┌──────────┐ ┌──────────┐ ┌──────────┐ ┌──────────┐ │ │ │ │ │ Ollama │ │ Whisper │ │ Piper │ │ Stable │ │ │ │ │ │ LLM │ │ STT │ │ TTS │ │Diffusion │ │ │ │ │ └──────────┘ └──────────┘ └──────────┘ └──────────┘ │ │ │ └─────────────────────────────────────────────────────────┘ │ │ │ │ ┌─────────────────────────────────────────────────────────┐ │ │ │ Media Services │ │ │ │ ┌──────────┐ ┌──────────┐ ┌──────────┐ │ │ │ │ │ Jellyfin │ │ Viseron │ │ Immich │ │ │ │ │ │ (NVENC) │ │ (NVR) │ │ (Photos) │ │ │ │ │ └──────────┘ └──────────┘ └──────────┘ │ │ │ └─────────────────────────────────────────────────────────┘ │ │ │ │ ┌─────────────────────────────────────────────────────────┐ │ │ │ Cloud Gaming │ │ │ │ ┌──────────┐ ┌──────────┐ ┌──────────┐ │ │ │ │ │ Sunshine │ │ Steam │ │ Xorg │ │ │ │ │ │(Streamer)│ │ (Proton) │ │(Display) │ │ │ │ │ └──────────┘ └──────────┘ └──────────┘ │ │ │ └─────────────────────────────────────────────────────────┘ │ │ │ └─────────────────────────────────────────────────────────────────┘ │ │ Network ▼ ┌─────────────────────────────────────────────────────────────────┐ │ Clients │ │ ┌──────────────┐ ┌──────────────┐ ┌──────────────┐ │ │ │ Open WebUI │ │Home Assistant│ │ Moonlight │ │ │ │ (AI Chat) │ │(Voice Control)│ │(Game Stream) │ │ │ └──────────────┘ └──────────────┘ └──────────────┘ │ └─────────────────────────────────────────────────────────────────┘ Key Features Efficient resource consolidation - Single GPU serves multiple workloads PCI-e passthrough - Full GPU performance in VM Hardware transcoding - NVENC for media streaming Local AI - No cloud dependencies, complete privacy Cloud gaming - Stream AAA games to any device Use Cases AI Chat & Assistance Local ChatGPT-style interface via Open WebUI, integrated with Home Assistant for voice control. ...

Automated cross-platform blog sharing using an n8n workflow. Fetches posts from RSS, summarizes with local LLM, and publishes to Facebook, LinkedIn, X (Twitter), and Instagram automatically. Overview Aspect Details Platform Self-hosted n8n LLM Gemma via Ollama (local GPU) Social APIs Postiz Scheduling Cron trigger (10 min) Hardware RTX 3090 Ti for inference How It Works Fetch - RSS feed polling for new blog posts Summarize - Ollama (Gemma) generates platform-specific summaries Extract - Parse HTML for images, download and resize Generate - AI creates relevant hashtags Publish - Postiz API posts to all platforms Dedupe - Hash-based tracking prevents duplicates Architecture ┌─────────────────────────────────────────────────────────────────┐ │ Blogspot RSS Feed │ └───────────────────────────┬─────────────────────────────────────┘ │ ▼ ┌─────────────────────────────────────────────────────────────────┐ │ n8n Workflow │ │ ┌──────────────────────────────────────────────────────────┐ │ │ │ Cron Trigger (10 min) │ │ │ └──────────────────────────┬───────────────────────────────┘ │ │ │ │ │ ┌──────────────────────────▼───────────────────────────────┐ │ │ │ RSS Feed Node (Fetch Latest) │ │ │ └──────────────────────────┬───────────────────────────────┘ │ │ │ │ │ ┌──────────────────────────▼───────────────────────────────┐ │ │ │ Hash Check (Duplicate Prevention) │ │ │ └──────────────────────────┬───────────────────────────────┘ │ │ │ │ │ ┌──────────────────────────▼───────────────────────────────┐ │ │ │ Ollama Node (Gemma LLM) │ │ │ │ • Summarize (platform char limits) │ │ │ │ • Generate hashtags │ │ │ └──────────────────────────┬───────────────────────────────┘ │ │ │ │ │ ┌──────────────────────────▼───────────────────────────────┐ │ │ │ Image Extraction & Processing │ │ │ │ • HTML parsing │ │ │ │ • Download & resize │ │ │ └──────────────────────────┬───────────────────────────────┘ │ │ │ │ │ ┌──────────────────────────▼───────────────────────────────┐ │ │ │ Postiz API │ │ │ │ ┌─────────┐ ┌─────────┐ ┌─────────┐ ┌─────────┐ │ │ │ │ │Facebook │ │LinkedIn │ │ X │ │Instagram│ │ │ │ │ └─────────┘ └─────────┘ └─────────┘ └─────────┘ │ │ │ └──────────────────────────────────────────────────────────┘ │ └─────────────────────────────────────────────────────────────────┘ Key Features Smart summarization within character limits using adaptive LLM prompts Platform-specific formatting (280 chars for X, longer for LinkedIn) AI-generated hashtags added dynamically Duplicate prevention via link hashing with file-based tracking Modular design allowing new feeds or social networks Fully offline operation on local GPU Challenges Solved Dynamic text length control with calculated maxChars Workarounds for Postiz API quirks (especially Instagram JSON issues) Reliable parsing of flexible LLM outputs Optimized for full offline operation on local GPU (RTX 3090 Ti) Fixed n8n JSON import/export bugs for community sharing Tech Stack Component Technology Automation Self-hosted n8n with community nodes AI Gemma via Ollama Social API Postiz Content RSS feed parsing Images HTML parsing, HTTP download, resize Deduplication JavaScript hash with file tracking Scheduling Cron trigger Results A fully automated, privacy-friendly cross-posting system that runs without manual input. Now available as a template on n8n.io for community use. ...