--- title: "Prasheel Soni (@ps11) | Hashnode" description: "Software Engineer | Traveller | Blogger. Read the latest articles by Prasheel Soni on Hashnode." url: "https://hashnode.com/@ps11" --- @ps11 # Prasheel Soni @ps11 · Tallinn, Estonia · Joined December 2020 Software Engineer | Traveller | Blogger ### [I Built a Robot Crab Named Keku. Here's Everything That Went Wrong (And Right)](https://ps11.hashnode.dev/i-built-a-robot-crab-named-keku-here-s-everything-that-went-wrong-and-right?utm_source=hashnode&utm_medium=feed) A software engineer's first hardware project: building a walking quadruped robot from scratch. Broken servos, fried chips, homemade test equipment. 8 min read · [ps11.hashnode.dev](https://ps11.hashnode.dev/i-built-a-robot-crab-named-keku-here-s-everything-that-went-wrong-and-right?utm_source=hashnode&utm_medium=feed) [May 30](https://hashnode.com/posts/i-built-a-robot-crab-named-keku-here-s-everything-that-went-wrong-and-right/6a1a2aa9a369e7c9ad252214) ### [Beyond Google Search: Understand and Build Your Personal AI with 'RAG Builder'](https://ps11.hashnode.dev/beyond-google-search-understand-and-build-your-personal-ai-with-rag-builder?utm_source=hashnode&utm_medium=feed) Build RAG Builder, a local AI system for your notes (Obsidian, journals) using Ollama and ChromaDB. Get private, accurate insights. Clone the code! 6 min read · [ps11.hashnode.dev](https://ps11.hashnode.dev/beyond-google-search-understand-and-build-your-personal-ai-with-rag-builder?utm_source=hashnode&utm_medium=feed) [Sep 30, 2025](https://hashnode.com/posts/beyond-google-search-understand-and-build-your-personal-ai-with-rag-builder/68dc3d6e617ff46ec6ab8702) ### [8-Day Croatia Road Trip Itinerary | Scenic Routes, Hidden Gems & Veg Food](https://ps11.hashnode.dev/8-day-croatia-road-trip-itinerary?utm_source=hashnode&utm_medium=feed) Welcome to our lovingly chaotic Croatia travel guide — told from the front seat of a Dacia Duster, through cobbled alleys, waterfalls and missed turns 19 min read · [ps11.hashnode.dev](https://ps11.hashnode.dev/8-day-croatia-road-trip-itinerary?utm_source=hashnode&utm_medium=feed) [Jun 26, 2025](https://hashnode.com/posts/8-day-croatia-road-trip-itinerary/685d6e2a791bccfa6bdb170e) ### [From Software Engineer to Senior: A No-Fluff Guide with My Journey](https://ps11.hashnode.dev/from-software-engineer-to-senior?utm_source=hashnode&utm_medium=feed) What actually changes when you become a senior, and how I made the leap. 5 min read · [ps11.hashnode.dev](https://ps11.hashnode.dev/from-software-engineer-to-senior?utm_source=hashnode&utm_medium=feed) [May 16, 2025](https://hashnode.com/posts/from-software-engineer-to-senior/6827700ce55efc4c60b78464) ### [Engineers' Guide to Building a Second Brain in Obsidian: Practical Tips](https://ps11.hashnode.dev/engineers-guide-to-building-a-second-brain-in-obsidian-practical-tips?utm_source=hashnode&utm_medium=feed) “How I stopped forgetting everything, organized my digital chaos, and built a thinking system with markdown and Obsidian.” 7 min read · [ps11.hashnode.dev](https://ps11.hashnode.dev/engineers-guide-to-building-a-second-brain-in-obsidian-practical-tips?utm_source=hashnode&utm_medium=feed) [Apr 30, 2025](https://hashnode.com/posts/engineers-guide-to-building-a-second-brain-in-obsidian-practical-tips/68129428fd94afcc81046eb5)