A maker built a custom 360-degree 3D scanning rig using an Ouster VLP-16 lidar sensor to map the interior of a cave. The sensor's native 40-degree field of view was extended to full 360-degree coverage by mounting it on a rotating shaft driven by a belt drive. The project highlights how homebrew solutions can rival expensive commercial scanners while offering hands-on learning about sensor mechanics and data processing.
Nguồn: https://hackaday.com/2026/06/24/laser-scanning-a-cave-with-homebrew-gear. 8sync News chỉ tóm tắt và dẫn link; bản quyền nội dung thuộc tác giả và nguồn gốc.
Smart plug (Zigbee) giá rẻ (~$15) thay thế smart appliance nhờ ưu điểm tiết kiệm chi phí, tránh lệ thuộc cloud, kéo dài tuổi thọ thiết bị và giảm rác thải điện tử. Chúng theo dõi dòng điện, kích hoạt tự động hóa (Home Assistant) như thông báo kết thúc chu trình, tính toán chi phí năng lượng hay ngắt an toàn mà không cần internet.
Lập trình viên nên đọc bài này để hiểu cách xây dựng hệ thống nhà thông minh tự động hóa hiệu quả bằng cách kết hợp các thiết bị cơ bản với các công cụ mở nguồn như Home Assistant, giảm chi phí và tránh phụ thuộc vào dịch vụ đám mây đắt tiền.
Sonocotta's Louder ESP32 Mini is a compact open-source hardware board designed to retrofit old passive speakers with WiFi and Bluetooth connectivity. Built around the ESP32-S3 with 8MB PSRAM and a TAS5805M DAC/amplifier, it comes in two sizes (42×42mm and 52×52mm) and replaces the standard speaker terminal cup. It supports multiple firmware options including Squeezelite-ESP32 for Spotify Connect and AirPlay, Snapclient for multi-room audio, and ESPHome for Home Assistant integration. Priced at $15–$20, it's available on Lectronz and Tindie, with schematics and Gerber files published on GitHub.
Micron CEO Sanjay Mehrotra has stated that the AI-driven global RAM and NAND shortage will persist through 2027 and only begin to improve gradually in 2028, with no clear timeline for supply catching up to demand. The shortage stems from major chip makers — Micron, Samsung, and SK Hynix — pivoting to serve hyperscaler data center demand, leaving consumer markets undersupplied. Micron posted record Q3 2026 revenue of $41.46 billion, a 346% year-on-year increase. The supply crunch is driving up prices for DDR5 RAM and SSDs, with downstream effects including higher console prices and the Steam Machine launching at $1,049.

Linux 7.2 is removing two obsolete drivers from its source tree: the DTLK ISA speech synthesizer driver and the Applicom PROFIBUS driver. The Applicom driver was originally ported from SCO Unix in 1998, has had severe coding style issues, was broken for years in early Git history, and has no known active users. Later Applicom hardware only officially supports Windows and has been discontinued. The removals together eliminate approximately 19,500 lines of code, reducing future maintenance burden.
Orange Pi 6 is a new compact SBC (90x90mm) powered by the CIX P1 (CD8180) 12-core Arm Cortex-A720/A520 SoC with up to 32GB LPDDR5 RAM. Compared to the larger Orange Pi 6 Plus, it features 2.5GbE instead of 5GbE networking, drops LiPo battery support, and comes in a smaller form factor. Key specs include dual M.2 PCIe Gen4 x4 slots, multiple display outputs, a 28.85 TOPS NPU, and support for Debian, Ubuntu, Android, Windows 11, and OpenHarmony. Pricing starts at $239 for the 8GB model, reflecting the high cost of LPDDR5 RAM, making it significantly pricier than typical Orange Pi boards.
A Samsung Galaxy user shares four preinstalled apps they always remove: Samsung Browser (replaced by Chrome for cross-device consistency), Samsung Notes (replaced by Google Keep for web accessibility), Samsung TV Plus (unused ad-supported streaming service), and Samsung Global Goals (a charity app they prefer not to use). The author clarifies these aren't truly bloatware — they're decent apps — but cross-platform compatibility with iPhone, iPad, MacBook, and Windows PC makes Samsung's ecosystem apps redundant for their workflow.
Microsoft is raising Xbox console prices worldwide effective August 2, citing a components crisis driving up storage and memory costs by more than 2.5x. The Xbox Series S 512GB jumps from $399.99 to $499.99, the Series S 1TB from $449.99 to $599.99, the Series X Digital from $599.99 to $749.99, and the Series X from $649.99 to $799.99. The 2TB model is being discontinued. Microsoft notes consoles are sold below cost and points to buy-now-pay-later options and refurbished console programs to help with affordability. The announcement follows Valve's Steam Machine also launching at higher-than-expected prices due to similar hardware supply issues.
A month-long comparison of Android Auto and Apple CarPlay on extended road trips. CarPlay wins on design polish thanks to Apple's Liquid Glass aesthetic and third-party widget support. Android Auto wins on customization, notification control, and most decisively on voice assistant capability — Gemini handles complex multi-app commands far more naturally than Siri, making Android Auto the overall winner for practical long-drive use.