Project ideas from Hacker News discussions.

I'm building a Space Cadet Pinball Machine! [video]

Original Article

Hacker News Discussion

📝 Discussion Summary (Click to expand)

Three dominant themes in the discussion

Theme	Supporting excerpts
1. Building unconventional projects at home	“I have given up any pretext of living a conventional life and am building an airplane in the main living area of my house… feels right/normal” — metalman “Most of the parts should fit through a normal door… rent a hanger for final assembly” — bluGill
2. The sense of “relaxing and normal” that these hobbies provide	“Massively relaxing and feels right/normal” — metalman (highlighted by orthoxerox)
3. Community curiosity and a desire for public documentation	“are you documenting this in any public way for those of us that are inevitably curious on the details?” — dgritsko

These three threads capture the community’s focus on DIY home builds, the emotional payoff of such projects, and the appetite for sharing detailed progress.

🚀 Project Ideas

HobbyChronicle

Summary

A shared, timestamped journal for large home‑built projects (airplanes, pinball machines, boats) that organizes photos, schematics, and milestones.
Core value: Turn scattered hobby logs into a searchable, community‑backed timeline that keeps builders motivated and connected.

Details

Key	Value
Target Audience	Hobbyists building major projects at home who want structured documentation and community feedback
Core Feature	Multi‑media timeline with versioned entries, collaborative comments, and exportable PDFs
Tech Stack	Web app (React + Node.js), PostgreSQL, Markdown storage, S3 for assets
Difficulty	Medium
Monetization	Revenue-ready: subscription $7/mo for premium analytics and offline export

Notes

HN commenters expressed fascination with building things in living spaces and asked for public documentation – this directly addresses that curiosity.
Could spark discussion by showcasing real‑world builds and providing a template for others to share progress.

FitThrough

Summary

An online configurator that checks whether oversized hobby components (e.g., aircraft fuselage, pinball cabinets) can physically navigate through a user’s home – door widths, hallway turns, stair dimensions – and suggests a feasible move route.
Core value: Prevent costly failed moves and damage by giving hobbyists a quick feasibility test before purchasing or transporting large parts.

Details

Key	Value
Target Audience	Makers of large‑scale hobby projects who need to move parts into or around a residence
Core Feature	Interactive 3D house planner with part size input, auto‑path calculation, and collision warnings
Tech Stack	Vue.js front‑end, spatial libraries (Cannon.js / Three.js), backend API for storing house schematics
Difficulty	Low
Monetization	Hobby

Notes

Directly answers the “big door” and “fit through” concerns voiced in the thread.
Users can share their floor‑plan scans, creating a community repository of real‑world layout challenges.

HobbyHangar

Summary

A marketplace that connects hobbyists needing to transport massive components with vetted couriers experienced in residential deliveries, offering scheduling, insurance, and route planning.
Core value: Streamline the logistics of moving airplane sections, boat hulls, or large pinball machines out of a home garage or basement.

Details

Key	Value
Target Audience	Builders of oversized hobby projects who lack a dedicated workshop or logistics support
Core Feature	Quote engine for residential freight, integrated calendar, and insurance marketplace
Tech Stack	Ruby on Rails API, React Native app for drivers, Stripe Connect for payments
Difficulty	High
Monetization	Revenue-ready: transaction fee 5% per shipment + optional premium insurance

Notes

Solves the practical problem of “parts should fit through a normal door” and the need for a reliable way to move them.
Generates discussion around shipping costs and safety, while offering a clear utility for the community.