Переделка радиоприемника «Электроника 26–01»

В этой статье я расскажу о том, как я чинил и модернизировал довольно редкий и несколько необычный советский радиоприемник «Электроника 26–01», и о том, какую «тайну» скрывает его управляющая микросхема.

ENILINX TICKEY – An ESP32-S3-based color e-Paper badge with open firmware (Crowdfunding)

ENIAC (operating as ENILINX) has launched the TICKEY, a 3.7-inch color e-Paper smart badge and desk display built around an ESP32-S3 MCU. The device features Wi-Fi, Bluetooth, and NFC connectivity, allowing users to update the screen from a smartphone without requiring continuous power to hold a static image. The display uses Modos’ color e-paper technology to deliver 48+ native colors, with refresh times as fast as 3 seconds and sunlight readability. Measuring just 3.8mm thick and weighing 45 grams, TICKEY features an aluminum-alloy body and interchangeable faceplates, and supports NFC and QR code-based web profile sharing. The standard version includes...

AAEON MIX-PTLWV1 Panther Lake industrial mini-ITX motherboard offers quad DisplayPort, dual 10GbE, and more

AAEON MIX-PTLWV1 is an industrial mini-ITX motherboard based on Intel Core Ultra Series 3 “Panther Lake” processors with up to two 10GbE and two 2.5GbE RJ45 jacks, and four 4K-capable DisplayPort video outputs. The motherboard also supports up to 128GB DDR5 C/SO-DIMM memory, M.2 NVMe SSD storage, optional WiFi and Bluetooth, and/or 4G LTE/5G cellular via M.2 modules, a PCIe Gen4 x8 slot for expansion, six serial interfaces, 12V-24V wide DC input, and more. AAEON MIX-PTLWV1 specifications: SoC – Intel Panther Lake processor (PTL-H404/PTL-H484 families) with Intel Xe LPG graphics; TDP: 15 to 25W System Memory – Up to 128GB...

OpenMANET – A higher-bandwidth Meshtastic alternative leveraging 802.11ah WiFi HaLow

OpenMANET is an open-source project for building long-range wireless mesh Mobile Ad-hoc Networks (MANETs) using Raspberry Pi SBCs and Wi-Fi HaLow (802.11ah) chips from Morse Micro. This came up when we wrote about Morse Micro USB WiFi HaLow adapters, and an X user commented that “OpenMANET is going to explode with these available, no more adapter boards or M.2 cards”. OpenMANET targets search and rescue, disaster response, airsoft events, and other off-grid or infrastructure-failed situations. So it looks like an alternative to LoRa-based Meshtastic and Meshcore, with higher bandwidth, at the cost of more expensive hardware and higher power consumption. OpenMANET...

CVITEK CV1842H-P-based edge AI camera module offers night vision and AI-ISP support (Crowdfunding)

The AIMORELOGY Ovis is an open-source AI vision camera module built around the CVITEK CV1842H-P SoC, with full-color 1080p night vision and 1.5 TOPS edge AI inference in a compact modular design. It is designed for drones, robotics, security systems, smart cameras, and custom embedded vision products. The camera features a compact stacked design, with a 20 × 20 mm Core board that includes the CVITEK CV1842H-P SoC, 2 Gbit NAND flash, USB, and UART debug pads. A Sensor board with the SC235HAI image sensor connects on top and also adds Ethernet and UART interfaces. An optional CVBS board goes...

Alif Semi Balletto B1 and Ensemble E1C StartKits feature Cortex-M55 + Ethos-U55 MCU for IoT and Edge AI

Alif Semiconductor’s Ensemble E1C (SK-E1C) and Balletto B1 (SK-B1) StartKits are low-cost development boards built around the company’s Cortex-M55 + Ethos-U55 microcontrollers. The Balletto B1 adds BLE 5.3 and 802.15.4 wireless connectivity, while the Ensemble E1C does not have built-in wireless connectivity. Both StartKits feature a microcontroller with a 160MHz Cortex-M55 CPU, an Ethos-U55 NPU, 2MB SRAM, and 1.8/1.9MB NVM. They also include an Arducam camera header, a mikroBUS Click Board expansion socket, and two PDM microphones for camera, audio, and sensor-based projects. The Balletto B1 additionally provides the complete RF path to a chip antenna for its wireless subsystem,...

Design in KiCad, Quote with AIVON: A Faster Path to PCB Prototyping (Sponsored)

Finished your PCB layout in KiCad? You don’t necessarily need to leave the PCB Editor, export a separate set of manufacturing files, and manually upload them to a PCB manufacturer. AIVON’s KiCad Plugin creates a direct path from your PCB design to an online PCB quote. AIVON has integrated an official KiCad plugin that connects a finished PCB layout to the company’s online quotation page. After DRC, users can click the plugin in the PCB Editor, automatically prepare manufacturing data, and land on a pre-filled quote form instead of exporting, zipping, and uploading files by hand. Rather than introducing a...

Morse Micro Wi-Fi HaLow USB adapters add 802.11ah connectivity to PCs and routers

Last year, we saw Morse Micro introduce the MM8108 Wi-Fi HaLow (802.11ah) SoC with up to 43.33 Mbps throughput, along with an MM8108-RD09 USB dongle reference design, for which we had virtually no details at the time. Morse Micro has now released USB-A and USB-C Wi-Fi HaLow adapters based on that reference design. The adapters let PCs and routers connect to 802.11ah networks through USB without a dedicated expansion card and feature an external SMA antenna delivering up to 26 dBm transmit power. Wi-Fi HaLow USB network adapter specifications: SoC – Morse Micro MM8108 32-bit RISC-V Host Applications Processor (HAP)...

Microcode in Intel's 8087 floating-point chip: the scale instruction

In the 1970s, floating-point arithmetic was a mess. Computer manufacturers had a dozen incompatible arithmetic standards. Moreover, floating-point systems were designed around hardware simplicity rather than mathematical rigor, leading to problems with numerical stability. This changed when Intel introduced the 8087 floating-point coprocessor chip in 1980, designed to be as accurate as possible, even in the corner cases. The 8087 became popular because it could be installed in the IBM PC, making floating-point operations up to 100 times faster in applications ranging from spreadsheets to CAD. But more importantly, the 8087 became the floating-point standard used by most computers today.

The 8087 implemented its instructions in complex...

«Наберите код»: история и устройство самого массового кодового замка СССР

Приветствую всех!

Как-то раз я уже рассказывал про релейный кодовый замок из восьмидесятых. Тогда я говорил, что помимо него существовали ещё и более новые экземпляры. И вот, волею случая один из них попал ко мне в руки. Чем он отличается от предшественника и как он устроен? Сейчас и узнаем.

Итак, сегодня посмотрим на, наверное, самый распространённый кодовый замок тех лет. Проведём ностальгическую распаковку, посмотрим на все его блоки и, конечно, разберёмся, как он работает. Как водится, будет много интересного.