Ask HN: What was an interesting project you started and finished over a weekend?

Hacker News Discussion ↗

Weekend side projects range from tiny utilities and games to tools that later evolved into businesses, job opportunities, or widely used open source libraries. Contributors describe rapidly scratching personal itches—automating chores, visualizing data, building toys for kids or grandparents, or exploring new stacks—then sometimes polishing the result just enough to share. A recurring theme is how constrained timeboxes, modern tooling (including AI assistants), and real-world annoyances combine to make small, highly focused projects both achievable and surprisingly impactful.

Overall Pattern

  • Most replies describe small, highly-focused projects built in 1–3 days, often extended later.
  • Common motivations: scratch a personal itch, help family, fix a nagging workflow, or learn a new stack.
  • Many “weekend projects” became long-lived tools, open-source libraries, small SaaS products, or even got acquired.

Personal Utilities and Developer Tools

  • Numerous CLI and web tools: bookmark managers, todo apps, config validators, cron monitors, log viewers, HTTP/TCP proxies, argument parsers, cert automation, and WebSocket broadcasters.
  • Several deployment/infra helpers: lambda-based CI agents, simple Heroku-like PaaS, uptime/cron monitoring, and tunneling via WireGuard.
  • Many “one-page” utilities: recipe simplifiers, numeric base converters, typing/clicking tests, static site generators.

Media, Messaging, and Content

  • Home media indexers and players, including workarounds for iOS restrictions and AirPrint limitations (fake printers, DNS/mDNS hacks).
  • Music/sleep/noise devices, minimalist MP3 players for relatives, and tools to sync playlists from chat logs.
  • Messaging tweaks: CLI or web messengers, WhatsApp wrappers, SMS/WhatsApp shims, and small TV apps to check VPN/IP (sometimes rejected by app stores).

Games, Visualizations, and Learning Aids

  • Many quick games: Wordle/emoji/mini-chess variants, asteroid clones, racing/air-hockey sims, zero-player universes, D&D engines, charades with AI.
  • Educational tools: arithmetic drills, toothbrush timers, touch-typing helpers, language aids, icebreakers, and various map/timeline visualizations.

Hardware and Physical Projects

  • DMX light controllers, ESP32 Snapcast clients, Arduino/RP2040 gadgets, macropads from LEGO, auto-clicker mice, environmental sensors, pet ramps, and instrument refurbishments.

AI and LLM Use

  • Several used GPT/Copilot to accelerate coding, or built LLM/RAG-based products (email reputation, document chat, podcast generators, analytics).
  • Some note hallucination issues and limits for production use.

Impact, Recognition, and Debate

  • Multiple stories where a trivial-seeming internal tool became widely used, influenced company practice, or boosted careers.
  • One election-counting tool for a national senate race became part of public verification efforts.
  • A side discussion on “15-minute cities” contrasts enthusiasm for walkable planning and analytics with concern over affordability and traffic-control measures.