7.20.26 | I replaced a $120k bowling center system with ESP32s, Qwen 3.8, Claude Code uses Bun written in Rust

Hacker News Highlights · Jul 20, 2026 · 13m

This is a recap of the top 10 posts on Hacker News on Jul 20, 2026.

Feel free to leave feedback on Github: https://github.com/denolfe/hacker-news-highlights

(00:00) - Intro

(00:18) - Show HN: I replaced a $120k bowling center system with $1,600 in ESP32s

(01:52) - Qwen 3.8

(03:11) - Claude Code uses Bun written in Rust now

(04:43) - What I learned selling 2,500 MIDI recorders: Hardware is not so hard

(05:57) - Claude Fable produced a counterexample to the Jacobian Conjecture

(07:17) - Minecraft: Java Edition now uses SDL3

(08:28) - I joined the IndieWeb, here's what I learned

(09:39) - Orion…