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

The user, an SRE, bought an abandoned bowling center and replaced the expensive scorekeeping system with an open-source alternative using ESP32 and Raspberry Pi for under $400 per lane-pair. This project, called OpenLaneLink, aims to make bowling more affordable and reduce vendor lock-in by providing an open hardware and software stack.

LoRA Speedrun – a public wall-clock leaderboard for fine-tuning techniques

https://repository-images.githubusercontent.com/1305115824/8a9e536e-cfd7-49ca-9feb-56cc68dc9815
The goal is to fine-tune Qwen2.5-1.5B to ≥ 57% on GSM8K in ≤ 6m 05s on a single L40S using LoRA. The competition uses a frozen task, hardware, and leaderboard with wall-clock records, and anyone can attempt and verify records with free compute credits.

Moonshine: Lets you stream games from your PC to any device running Moonlight

https://opengraph.githubassets.com/77d5b5c2e7a3f3c132bd57ce7e1123c6d65a24db50042a548267cc3fc742df2f/hgaiser/moonshine
Moonshine allows remote PC gaming with isolated streaming sessions and keyboard, mouse, and controller inputs. It requires a Linux system and a VPN for secure internet streaming.

Power companies are using eminent domain to seize land for data centers

https://fortune.com/img-assets/wp-content/uploads/2026/07/GettyImages-2280056139-e1784391242756.jpg?format=webp&w=1440&q=100
The US is experiencing a data center boom, with over 3,000 existing and 1,500 in development, but many Americans oppose their construction due to environmental concerns. Power companies are using eminent domain to build transmission lines for these centers, sparking debates over public use and private property rights.

Claude Code uses Bun written in Rust now

Claude Code uses a preview of Bun v1.4.0, a not-yet-released version, indicating its use in production. This suggests Bun in Rust is being run on millions of devices.

Korg PS-3300 is back

https://www.korg.co.uk/cdn/shop/files/PS-3300_image6.jpg?v=1742296291&width=2000
Korg's PS-3300 is a rare, legendary synth revived by its original creator, Fumio Mieda, with modern reliability and craftsmanship. This limited-edition instrument offers a vast sonic palette and semi-modular design, perfect for forward-thinking musicians and synth enthusiasts.

Orion Browser by Kagi

https://storage.googleapis.com/prod-kagi-lab-kagi-cms/orion-1.1-main-hero.webp
Orion browser offers native WebKit speed, absolute privacy, and limitless customization with zero-telemetry browsing and ad-blocking. It supports Safari, Chrome, and Firefox extensions and is 100% funded by users with no ads or third-party deals.

Claude Fable produced a counterexample to the Jacobian Conjecture

https://pbs.twimg.com/media/HNo87m-WsAApwYV.jpg?name=small&format=webp
hello there the jacobian conjecture is false thanx to my close friend akhil for asking about it and my other close friend fable for working during the world cup final ((1+xy)^3 z + y^2 (1+xy) (4+3xy), y + 3 x (1+xy)^2 z + 3 x y^2 (4+3xy), 2 x - 3 x^2 y - x^3 z): \C^3\to \C^3, has jacobian determinant -2, and sends (0, 0, -1/4), (1, -3/2, 13/2), and (-1, 3/2, 13/2) to (-1/4, 0, 0)

Xiaomi-Robotics-1

https://robotics.xiaomi.com/robot-static-resource/xiaomi-robotics-1/pretrain_data.jpg
Foundation models in language and vision keep moving the frontier by riding empirical scaling laws: capability tracks data, parameters, and compute. Robotics has missed out. Large-scale, high-quality data is hard to come by, and that scarcity, more than anything else, has capped how far policy models could scale. What robots can do under genuinely large-scale training remained largely an open ...

Self-Powered Trailers Promise Leaner Freight Runs

https://spectrum.ieee.org/media-library/a-large-battery-installed-on-the-undercarriage-of-an-electric-semi-trailer.jpg?id=67112537&width=1200&height=750
A semitrailer that helps propel itself entered commercial road testing in late May, when a power-train kit developed by Nivalis Energy Europe, headquartered in Luxembourg with engineering operations in Germany, was fitted to a trailer supplied by the Amsterdam-based TIP Group. The self-powered trailer was handed over to the German transport operator Sommer for use in its working fleet. The ...

What I learned selling 2,500 MIDI recorders: Hardware is not so hard

https://chipweinberger.com/assets/20260719-hardware-is-not-so-hard/jamcorder-in-situ.png
The creator of Jamcorder, a simple automated piano recording device, found the hardest part of building it was the software, not the hardware, which took over 3 years to develop. The experience suggests that hardware development is not as difficult as its reputation, and with proper planning, it's possible to successfully ship a hardware product at a medium scale.

The Zen of Parallel Programming

https://hcti.io/v1/image/019f60f9-8748-7924-aab9-c0b2804e8dc1
The connection between parallel programming and human life lies in the need for communication, synchronization, and coordination to achieve useful work. Honest communication and synchronization within oneself can prevent internal contention and allow for wholehearted activity.

Minecraft: Java Edition now uses SDL3

https://www.minecraft.net/content/dam/minecraftnet/games/minecraft/key-art/Global-Header_Image-Tile_MC-Java-Bedrock_570x321.jpg
The Minecraft snapshot has switched to SDL3 for window management, input, and platform integration, and added new item components for custom furnace fuels and technical changes for signs, world generation, and loot tables. Several bug fixes and changes have been made, including improvements to fullscreen mode, debug overlay, and loot table types, as well as fixes for various issues such as ...

Biggest Probabilistic Computer Turns Noise into Answers

https://spectrum.ieee.org/media-library/computer-chips-spread-vertically-across-several-shelves-to-create-a-1-million-probabilistic-bit-computer.jpg?id=67500450&width=980&quality=100
Scientists created a 1 million p-bit probabilistic computer, the largest yet, using 18 field-programmable gate arrays to tackle stochastic problems. This breakthrough may enable building arbitrarily large probabilistic computers from many chips, solving problems like optimization and route finding.

Who Is America's Homer?

https://cdn.prod.website-files.com/675475da8b1bc1cfa37674fa/6a2986c2112bdb3a96881dc9_Whitman.jpg
The article explores candidates for America’s "Homer," including Frost, Dickinson, and Wilder, debating their poetic range and cultural resonance. It argues that America’s fragmented identity and youth hinder a unifying national epic, unlike ancient Greece or Rome.

Bananas sprout in Rayleigh Garden UK after 15 years

https://ichef.bbci.co.uk/news/480/cpsprodpb/fc8b/live/16395500-8132-11f1-b525-63787292c170.jpg.webp
Bananas may become more common in British gardens due to warmer summers and milder winters. Tropical plant enthusiasts have successfully grown bananas in the UK, using techniques like creating a microclimate effect to protect from frost.

11,700 Free Photos from John Margolies' Archive of Americana Architecture

https://cdn8.openculture.com/2026/07/14203545/Donut-Hole.jpg
Archi­tec­ture con­nois­seurs like Le Cor­busier and Frank Lloyd Wright believed form fol­lows func­tion, but John Mar­golies pre­served quirky, play­ful road­side attrac­tions. His 11,700+ pho­tos are now free to use and reuse in the Library of Con­gress's Road­side Amer­i­ca Pho­to­graph Archive.

Qwen 3.8

https://pbs.twimg.com/media/HNk8XP_aoAAUShj?format=webp&name=medium
Qwen3.8 is launching with 2.4T parameters, considered one of the most powerful models today. It's available on Alibaba's Token Plan, Qoder, and QoderWork for early testing.

HomeLab #1: MikroTik as a Home Router

https://justsomebody.dev/_astro/hero.BmPd6k_o_Z25lme5.webp
The user set up a Mikrotik L009UiGS-RM router for their homelab to have better control over traffic and offload WiFi, focusing on wired connections for faster local network connections. They configured the router for their ISP's PPPoE over VLAN 35 with a private IPv4 address and implemented FQ-CoDel queue discipline to mitigate bufferbloat and improve latency.

Big Tech Is Now Targeting Native American Land for Data Centers

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

https://raymii.org/s/inc/img/w2k3-luna-itanium.png
A new Intel Itanium emulator has been released, allowing Windows Server 2003 and Windows XP 64-bit to boot. The emulator runs slowly but is a significant breakthrough in non-x86 CPU emulation.

Talk: The Art of Braiding Algorithms

A workshop on string figures as algorithmic art was held at Relatorium, exploring braid groups and hands-on string exploration. The workshop required participants to create a closed loop of string at home to analyze string figure algorithms.

I joined the IndieWeb, here's what I learned

https://en.andros.dev/static/img/footer/org-social.svg
The IndieWeb is a people-focused alternative to the corporate web, promoting personal, independent websites that share commitments such as owning your data, using visible data, and being in control. It defines a set of principles and standards, including microformats, webmention, and micropub, to help individuals build and maintain their own websites and connect with others in a decentralized network.

Big Tech Needs to Justify AI Spending as Investors Dump Stocks

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C64 Basic Dungeon Crawler: Goblin Attack (C64 Basic Part 8)

https://retrogamecoders.com/wp-content/uploads/2026/07/c64-dungeon-crawler-coding-lesson-8-commodore-basic-roguelike-programming-1200x900.png
The user implemented a turn-based game with goblins that chase the player, using parallel arrays to represent goblin positions and health, and added a simple AI for the goblins to move towards the player. However, the game broke due to a memory bug caused by the custom character set being placed in the path of the growing arrays, which was fixed by trimming the charset and adjusting the ...

HMD Touch 4G

https://images.ctfassets.net/wcfotm6rrl7u/2XINuLzLUuErhEN8CdCEP9/159df9df7a71880c5fd3a8b95b312ce6/HMD_Touch_4G-KV-Hero.png?w=1920&fm=webp&q=80
HMD Touch 4G is a hybrid phone combining feature phone simplicity with smartphone features like video calls and Wi-Fi support. It offers a touchscreen, Cloud Phone Service, and Express Chat app for texting and video calling.

I burned all my tokens researching how to save tokens

https://quesma.com/_astro/agents-stack.T_5QhpZt_29YbQP.png
The user optimized their AI research setup using existing subscriptions to Claude, Codex, and Antigravity, achieving a 10 times longer research time without extra cost by using shared memory and model orchestration. They also implemented verification rules to ensure the quality of findings and used a hybrid approach of human verification and AI research supplementation to build a reliable ...

Cagire: Live Coding in Forth

https://cagire.raphaelforment.fr/Cagire.png
Cagire is a free, open-source step sequencer that uses Forth scripts to produce sound and control effects. It includes a built-in audio engine and interactive documentation, and is available for self-compilation from source.

Dupes took over the world

https://platform.vox.com/wp-content/uploads/sites/2/2026/07/gettyimages-2160341306.jpg?quality=90&strip=all&crop=0%2C0.028260562385192%2C100%2C99.94347887523&w=2400
Dupe culture is a phenomenon where consumers find cheaper alternatives to name-brand products, and it has become a thriving industry with dupes available for various products, from clothing to vacations. The rise of dupe culture has led to a shift in ideas of ownership and originality, with many consumers embracing dupes as a way of life and social media platforms making it easier to find and ...

How proprietary formats have become Microsoft’s main tool for lock-in

https://blog.documentfoundation.org/wp-content/uploads/2026/07/ooxml_demo_4-242x300.jpg
Microsoft's proprietary document formats create lock-in, making users dependent on their software. Open standards like ODF can break this lock-in, ensuring documents are readable and accessible regardless of software or system.