TechSeptember 28, 2026

Show HN: PaperMono, e-ink fridge magnet shopping list with mobile web page

A developer created a shopping list application using an M5Stack PaperMono e-ink device synced with a mobile app, writing approximately 2,400 lines of C++ code entirely using Claude Code. The project demonstrates Claude's capabilities for hardware firmware development.

Why it matters

This shows how AI coding assistants can enable developers to build functional hardware projects without hand-writing code, expanding accessibility to embedded systems development.

Coverage

Hacker NewsShow HN: PaperMono, e-ink fridge magnet shopping list with mobile web page

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