Ячейка Пеннинга. Магниторазрядный насос. Высокий вакуум для самодельщика

Большая часть электровакуумных приборов (ЭВП) удовлетворительно (и долго) работает только при откачке их до высокого и сверхвысокого вакуума. Дело, однако, это долгое, хлопотное и дорогое, требующее драконовских мер чистоты и большой подготовки. Высоковакуумные насосы не умеют работать «с атмосферы» — требуют для своего запуска предварительной форвакуумной откачки, обычно до 10^-2…10^-3 мм рт. ст. (Торр). Существует целый ряд очень разных высоковакуумных насосов, работа которых основана на различных принципах. Не все они устроят самодельщика — где-то требуется слишком низкое давление для старта, недостижимое распространёнными и доступными форвакуумными насосами, где-то нужен жидкий азот для экстремального охлаждения, какие-то просто имеют огромную стоимость. Тем не менее существует вариант получения высокого вакуума, свободный от этих недостатков...

Raspberry Pi RP2350 devkit features 1.85-inch round touch display, microphone, optional speaker and battery box

Waveshare RP2350-Touch-LCD-1.85C is a Raspberry Pi RP2350 devkit with a 1.85-inch round touchscreen display with 360×360 resolution, a built-in microphone, a 28-pin GPIO header, and a USB-C port. The RP2350-Touch-LCD-1.85C-BOX model builds on the platform to add a box with a speaker and a 3.7V battery. Both models also come with 16MB SPI flash, a microSD card slot, a 6-axis IMU, a few buttons and LEDs, and UART and I2C expansion connectors. They can be used for HMI solutions using touch, button, and voice recognition inputs, as well as display and audio outputs. RP2350-Touch-LCD-1.85C specifications: Microcontroller – Raspberry Pi RP2350A MCU CPU...

Возвращение «Легенды». Оживляем раритетный ПК Packard Bell

Приветствую всех!

Вообще, брендовые ретро-ПК не так популярны у любителей, как обычные компьютеры. Несоответствие комплектующих каким-либо стандартам, отсутствие нормальной документации, отсутствие софта (типа утерянных утилит конфигурации) и неочевидные глюки - вот далеко не полный список проблем, с которыми можно столкнуться.

Но всё-таки есть экземпляры, лишённые практически всех этих косяков. И сегодня поговорим именно об одном из них - о брендовом слим-десктопе Packard Bell Legend. Как оказалось, этот девайс собрал в себе лучшее что от брендов, что от самых обычных самосборных машин...

LILYGO T-Echo Plus off-grid LoRa communicator features a climbing hook for hiking, cycling, and remote communication

The LILYGO T-Echo Plus is another off-grid LoRa communicator, similar to Blackout Comms, ThinkNode M2, and Wio Tracker L1 Pro, but it features a metal attachment loop (designed like a climbing hook) for use in hiking, cycling, and off-grid environments. Built around a Nordic Semi nRF52840 MCU, it supports Bluetooth 5, Thread, Zigbee, and 802.15.4. It also adds an SX1262 LoRa transceiver, a 1.54-inch 200×200 SPI E-Paper display, and an L76K GNSS module. Other features include a 6-axis IMU (BHI260AP), a vibration motor, a buzzer, and a larger 2400mAh battery, along with a 1/4-inch mount and a “climbing finger loop”...

1.5 TB of VRAM on Mac Studio - RDMA over Thunderbolt 5

1.5 TB of VRAM on Mac Studio - RDMA over Thunderbolt 5

Apple gave me access to this Mac Studio cluster to test RDMA over Thunderbolt, a new feature in macOS 26.2. The easiest way to test it is with Exo 1.0, an open source private AI clustering tool. RDMA lets the Macs all act like they have one giant pool of RAM, which speeds up things like massive AI models.

REETLE SmartInk I – An AI-powered E-Ink phone case with voice recording (Crowdfunding)

The REETLE SmartInk I is a phone case with a touch-enabled E-Ink display and built-in AI features. It features a secondary screen on the back for reading text, viewing notes, recording voice, and displaying to-do items, allowing basic tasks to be completed without using the phone’s main display. In the back, you have a 3.97-inch E-Ink touchscreen with one-press voice recording, AI-based transcription, summarization, and smart to-do display, all synced to a companion mobile app via Bluetooth 5.0. It supports iPhone 13–17 series and a wide range of Android phones, features a 300 mAh battery with 10W MagSafe wireless charging,...

NASP NeuroVoice VAD chip enables always-on voice activity detection at microwatt-level power consumption

POLYN Technology’s Neuromorphic Analog Signal Processor (NASP) NeuroVoice VAD is an always-on, ultra-low-power chip that detects voice in any noisy background, at microwatt-level power consumption and microsecond-scale latency. Everything happens on the chip, so no Internet is needed. Potential applications include smart remote controls, earbuds, wearables, voice access, IoT, Industry 4.0, robotics, Smart Home/Factory, mobility, and more. NASP NeuroVoice VAD chip (NV-VAD 100) specifications: Features Voice detection at ultra-low power consumption Voice passthrough – Passes voice and mutes background sounds Background signal bypass – Wake Word Detection (WWD) command to activate transparent voice bypass Speech/command intelligibility in noisy spaces –...

Radxa Dragon Q6A Arm SBC gets official Windows 11 preview

While most people use Linux on Arm SBCs, it’s typically possible to run Windows 11 on Arm boards with UEFI support, but with caveats such as the GPU and VPU not working and other issues. One solution is to avoid the Arm architecture altogether and go with an x86 SBC like the Radxa X4, ODROID-H4+, or LattePanda IOTA, among others. But things may change for the better now that Qualcomm SBCs are becoming a thing, and Radxa has just announced official Windows support for the Radxa Dragon Q6A. Note that it is only a preview image for now. Nevertheless, here’s...

Intel Alder Lake-N N100 powers modular x86 embedded platform with optional NFC interface

Youyeetoo has unveiled the K1, a compact x86 embedded platform based on Intel’s 12th-generation Alder Lake-N N100 processor. The system pairs an 82 × 71 mm core board with an optional 134 × 92 mm carrier board, targeting edge computing, industrial HMI, digital signage, and network appliance applications running Windows or Linux. The Youyeetoo K1 […]

Toradex Luna SL1680 – A “Pro Consumer” Raspberry Pi lookalike based on Synaptics SL1680 Edge AI SoC

Toradex Luna SL1680 is a credit card-sized single board computer heavily inspired by the Raspberry Pi 5 design, but powered by a Synaptics SL1680 quad-core Cortex-A73 SoC suitable for Edge AI applications thanks to a built-in 7.9 TOPS NPU. Designed for pro consumer and light industrial Edge AI applications, the Luna SL1680 ships with up to 4GB RAM and 256GB eMMC flash, and offers many of the same ports as the Pi 5, including a Gigabit Ethernet RJ45 port with optional PoE support, four USB 3.0 ports, two micro HDMI ports (but one Tx, one Rx), MIPI DSI and CSI...