Hacker News on Sunday, 19 July 2026

Show HN: I replaced a $120k bowling center system with $1,600 in ESP32s

2701 points by section33 3 months ago | 307 comments

Show HN post describing a DIY ESP32-based bowling scoring and lane-control system, OpenLaneLink, built to replace a costly proprietary system in a rural bowling center.

Qwen 3.8(twitter.com)

917 points by nh43215rgb 3 months ago | 649 comments

Alibaba's Qwen account announces Qwen3.8, a 2.4T-parameter model going open-weight soon, with a Max-Preview available via Token Plan, Qoder, and QoderWork.

Claude Code uses Bun written in Rust now(simonwillison.net)

584 points by tosh 3 months ago | 787 comments

A short note by Simon Willison using strings and grep on the Claude Code binary to confirm it ships a Rust port of the Bun runtime.

What I learned selling 2,500 MIDI recorders: Hardware is not so hard(chipweinberger.com)

536 points by chipweinberger 3 months ago | 243 comments

Blog post by Chip Weinberger on lessons from selling 2,500 Jamcorder MIDI recorders, part 1 arguing that building hardware is not so hard.

Minecraft: Java Edition now uses SDL3(minecraft.net)

341 points by ObviouslyFlamer 3 months ago | 235 comments

Minecraft.net article for a Java Edition snapshot release, which per the title switches the game to the SDL3 library.

OpenAI reduces Codex Model Context Size from 372k to 272k(github.com)

323 points by AmazingTurtle 3 months ago | 152 comments

A merged GitHub pull request in openai/codex backporting refreshed bundled model metadata (models.json) to the 0.144 release branch.

AI advice made people less accurate but more confident – sudy(thenextweb.com)

316 points by rbanffy 3 months ago | 180 comments

Moonshine: Lets you stream games from your PC to any device running Moonlight(github.com)

304 points by wertyk 3 months ago | 124 comments

AI Mania Is Eviscerating Global Decision-Making(ludic.mataroa.blog)

297 points by subset 3 months ago | 145 comments

Orion Browser by Kagi(orionbrowser.com)

279 points by sebjones 3 months ago | 246 comments

Moonshot AI suspends new subscriptions due to Kimi K3 demand(twitter.com)

238 points by serialx 3 months ago | 97 comments

I joined the IndieWeb, here's what I learned(en.andros.dev)

225 points by andros 3 months ago | 122 comments

Introduction to Formal Verification with Lean Part 1(hashcloak.com)

218 points by badcryptobitch 3 months ago | 45 comments

Qwen 3.8 Max Preview(qwencloud.com)

204 points by lebovic 3 months ago | 95 comments

Bananas sprout in Rayleigh Garden UK after 15 years(bbc.com)

178 points by teleforce 3 months ago | 134 comments

The Last MPEG-4 Visual Patent Has Expired(phoronix.com)

173 points by LorenDB 3 months ago | 44 comments

I burned all my tokens researching how to save tokens(quesma.com)

153 points by bkotrys 3 months ago | 195 comments

HomeLab #1: MikroTik as a Home Router(justsomebody.dev)

150 points by rafal_opilowski 3 months ago | 118 comments

We want Texans to know their rights(eff.org)

150 points by amarcheschi 3 months ago | 47 comments

Ollama: All Aboard Open Models(ollama.com)

129 points by inferhaven 3 months ago | 51 comments

The death and rebirth of my home server(sgt.hootr.club)

126 points by steinuil 3 months ago | 81 comments

ECC and DDR5(etbe.coker.com.au)

119 points by zdw 3 months ago | 123 comments

Terence McKenna's Mega Bad Trip (2025)(psychedelics.community)

91 points by Dimmiwoah 3 months ago | 82 comments

OpenStreetMap: Admin_level for All Countries(wiki.openstreetmap.org)

88 points by ivanjermakov 3 months ago | 21 comments

HMD Touch 4G(hmd.com)

84 points by thisislife2 3 months ago | 97 comments

C64 Basic Dungeon Crawler: Goblin Attack (C64 Basic Part 8)(retrogamecoders.com)

84 points by ibobev 3 months ago | 6 comments

Modder Runs GTA III Inside GTA: San Andreas on an In-Game TV(videocardz.com)

82 points by croes 3 months ago | 17 comments

Nvidia DGX Spark as a daily driver(daniel.lawrence.lu)

80 points by plun9 3 months ago | 63 comments

A new Intel Itanium (IA-64) emulator that boots Windows(raymii.org)

77 points by jandeboevrie 3 months ago | 67 comments

FDA approves new kind of cholesterol pill(fda.gov)

77 points by mgh2 3 months ago | 43 comments

Heavy TV watching associated with smaller brain structures, study finds(dornsife.usc.edu)

76 points by mashally 3 months ago | 38 comments

Texas Police Spent $4.5M on Four Chevy Tahoes(thedrive.com)

74 points by randycupertino 3 months ago | 36 comments

Biggest Probabilistic Computer Turns Noise into Answers(spectrum.ieee.org)

73 points by rbanffy 3 months ago | 13 comments

The Art of Insight in Science and Engineering – Mastering Complexity(2014) [pdf](ocw.mit.edu)

59 points by nill0 3 months ago | 3 comments

Natural experiments prove phytoplankton carbon removal works(onepercentbrighter.com)

56 points by getnormality 3 months ago | 24 comments

Ask HN: What are your favorite blogs not about AI?

54 points by azhenley 3 months ago | 22 comments

Scrying the AMD GFX1250 LLVM Tea Leaves(chipsandcheese.com)

54 points by mfiguiere 3 months ago | 3 comments

Americans are angry about data centers. Politicians are feeling the pressure(reuters.com)

52 points by baranul 3 months ago | 34 comments

How to Abandon Your Climate Commitments and Get Away with It(nytimes.com)

50 points by littlexsparkee 3 months ago | 13 comments

Clever hacker fits 537,000 domains in a $5 ESP32 ad-blocking dongle(tomshardware.com)

49 points by sbulaev 3 months ago | 17 comments

DeKalb deputy charged with Flock camera misuse; more Georgia officers fired(ajc.com)

47 points by pir8life4me 3 months ago | 22 comments

Perforce charges $500 for training training videos.. and it's AI narrated(training.perforce.com)

46 points by TZubiri 3 months ago | 62 comments

Motion Sensors and Home Security Gadgets Without Cameras(wired.com)

45 points by joozio 3 months ago | 20 comments

Deepsec(github.com)

41 points by handfuloflight 3 months ago | 5 comments

Half a Second – a book about the XZ backdoor(half-second.com)

41 points by zvr 3 months ago | 35 comments

AMD Ryzen 7 7700X3D Review: 3D V-Cache Gaming Performance for Less – HotHardware(hothardware.com)

39 points by rbanffy 3 months ago | 37 comments

Show HN: Explore 6048 YC companies as an interactive galaxy(artifacta.io)

32 points by jnakano89 3 months ago | 16 comments

I built a browser-based P2P file transfer tool using WebRTC(airdows.com)

31 points by SamOkampo 3 months ago | 15 comments

Show HN: A canvas-based note taking and organizer app(passinote.app)

29 points by passiflora96 3 months ago | 10 comments

LLM-Integrated Multivariable Calculus Course(calculus.academa.ai)

29 points by sinaatalay 3 months ago | 39 comments

The Mighty Big Array of Finn Jensen LA8YB(la0by.darc.de)

28 points by kalehmann 3 months ago | 7 comments

Neither GCC nor Clang are compliant with standard C++(sebsite.pw)

28 points by birdculture 3 months ago | 23 comments

Freeze-Casting(en.wikipedia.org)

26 points by soupspaces 3 months ago | 5 comments

How to Sell a Kettle(economist.com)

22 points by bazzmt 3 months ago | 5 comments

MemoryPack: Zero encoding extreme performance binary serializer for C#(github.com)

21 points by breve 3 months ago | 3 comments

Qwen 3.8 Max(qwen.ai)

20 points by linzhangrun 3 months ago | 1 comments

Less Is More: Why Audio on SoundCloud Looks Different(developers.soundcloud.com)

16 points by 1317 3 months ago | 5 comments

Overload and insight look identical from the outside(pilgrima.ge)

15 points by momentmaker 3 months ago | 2 comments

CO2 overload in blood suggests toxic atmosphere within 50 years(doi.org)

15 points by veqq 3 months ago | 4 comments

Postmortem of a British Startup: Tract(buildwithtract.com)

14 points by barry-cotter 3 months ago | 26 comments