Feed linux for devices [copy] http://www.linuxfordevices.com/rss-feeds-1.xml has loading error: cURL error 22: The requested URL returned error: 404
Feed Music Hackspace [copy] http://musichackspace.org/feed/rss/ has loading error: A feed could not be found at `https://musichackspace.org/feed/`. Empty body.
Feed SparkFun Electronics [copy] http://www.sparkfun.com/feeds/news has loading error: cURL error 22: The requested URL returned error: 405
Feed The RFID Weblog [copy] http://www.rfid-weblog.com/index.rss has loading error: cURL error 22: The requested URL returned error: 404 Not Found
SparkFun Thing Plus – ESP32-C5 board offers dual-band WiFi 6, Adafruit Feather pinout, LiPo battery support
Espressif has recently released the ESP-IDF v6.0 framework with support for ESP32-C5 and ESP32-C61, so we can expect more ESP32-C5 boards. Following the launch of boards like DFRobot FireBeetle 2 and the Espressif DevKitC-1, SparkFun has now launched its Thing Plus – ESP32-C5, an Adafruit Feather-compatible board based on the ESP32-C5. The timing is no coincidence. Although the ESP32-C5 dual-band WiFi 6 SoC was announced back in 2022, hardware makers have been waiting for stable software support. With the release of ESP-IDF v6.0, the ESP32-C5 moves from “preview” to “stable” and adds key features, such as Safe Bootloader OTA updates. This...
ESP32-P4-Pi-VIEWE – A Raspberry Pi-inspired ESP32-P4 + ESP32-C6 board with Ethernet, USB, 40-pin GPIO header, and more
The ESP32-P4-Pi-VIEWE is a Raspberry Pi-inspired development board equipped with a VIEWE ESP32-P4C6-Core module, combining a 400 MHz ESP32-P4 dual-core RISC-V MCU with an ESP32-C6 chip for Wi-Fi 6 and Bluetooth 5.0 wireless connectivity, as well as 32MB PSRAM and 16MB NOR flash. The board also offers 10/100Mbps Ethernet connectivity, MIPI DSI, and CSI connectors for display and/or camera, two onboard microphones, a speaker output, a USB 2.0 port, a micro SD card slot, and the usual 40-pin GPIO header, all in a familiar 85 x 56 mm credit card form factor. ESP32-P4-Pi-VIEWE specifications: Main module – VIEWE ESP32-P4C6-Core Microcontroller...
Радио почти из ничего. Самодельные радиодетали 1920-х. Конденсаторы
Мы уже припомнили [1], насколько небогато жилось коллегам-любителям на заре радио, и каков облик имели нехитрые рукодельные и даже фабричные радиоприёмники 1920-х — простые детекторные или малоламповые схемы, как правило — для длинных и средних волн. Скудный ассортимент всего из нескольких универсальных триодов, не ломившиеся от радиотоваров полки магазинов — почти все элементы для своих конструкций приходилось изготовлять своими руками, часто начиная от нехитрых материалов — листовых металлов, фольги и проволоки, дощечек, винтов, гвоздей, кое-каких подножных кухонных химикатов и прочей чепухи. Изготовлять в том числе и элементы питания (накальные элементы, анодные батареи), резисторы-конденсаторы, детекторы, выпрямители (в случае наличия осветительной сети), сердечники трансформаторов...
Microchip SAM9X75 Hybrid automotive MCU – Surprisingly ARM9 is still a thing in 2026
When Microchip launched the SAM9X60 in 2020, we were surprised to see a new SoC based on a legacy ARM926EJ-S core. But we were even more surprised to see Microchip doubling down with the SAM9X75, a hybrid automotive-qualified (AEC-Q100 Grade 2) System-in-Package (SiP) with the same classic ARM9 core and integrated DDR2 or DDR3L memory. The first part will be the SAM9X75D5M SiP with 512MB on-chip DDR2 RAM, but the company also designed the SAM9X75D1G with 1 Gbit DDR3L and the SAM9X75D2G featuring 2 Gbit DDR3L. The SAM9X75 hybrid ARM9 MCU targets developers who need an MCU-like development environment, while...
CHERI-Mocha memory-safe compute subsystem is now open
...
picoZ80 – A Z80 microprocessor drop-in replacement based on Raspberry Pi RP2350B and ESP32
The picoZ80 board is a drop-in replacement for the Z80 microprocessor based on the Raspberry Pi RP2350B dual-core Cortex-M33 microcontroller and an ESP32 wireless SoC for WiFi and Bluetooth connectivity. My first computer was a ZX81 powered by a Zilog Z80 microprocessor, which was eventually phased out in 2024 after almost 50 years of production. But retro computing enthusiasts keep the platform alive, usually with softcore FPGA implementations such as MiSTer. The picoZ80 is different as it relies on the programmable I/O (PIO) state machines from the RP2350B MCU to reproduce cycle-accurate address, data, and control buses of the Z80...
RuView project leverages ESP32 nodes for WiFi-based presence detection, pose estimation, and breathing/heart rate monitoring
RuView is an open-source “WiFi DensePose” implementation leveraging multiple ESP32 nodes to turn WiFi signals into real-time human pose estimation, vital sign monitoring, and presence detection without relying on video cameras. WiFi DensePose is a sensing technique, first explored in academic research, that leverages WiFi signals to reconstruct human pose. RuView implements this technique in Rust or Python, and relies on your WiFi router and several ESP32 nodes to track body pose, detect breathing rate, and measure heart rate even through walls. As we’ll discuss below, this project has its own controversy, as some claim it’s fake. The solution relies...
AngstromIO – A tiny 9.0 x 8.9 mm ATtiny1616 board that fits on top of a USB-C connector
Dieu-de-l-elec’s AngstromIO is an incredibly tiny open-source development board based on Microchip’s ATtiny1616 MCU. Measuring just 9.0 x 8.9 mm, the board is barely larger than the edge-mounted USB Type-C connector that powers it, making it ideal for highly space-constrained embedded projects. Despite its tiny footprint, AngstromIO packs a QFN20-packaged ATtiny1616 MCU, two addressable SK6805-EC15 RGB LEDs, and includes access to various usable GPIOs, including I2C, UART, and UPDI for programming. AngstromIO specifications: MCU – Microchip ATtiny1616 8-bit AVR microcontroller @ up to 20 MHz with 16KB flash, 2KB SRAM, 256 bytes EEPROM USB – 1x USB Type-C port (power...
Pine64 FOSDEM 2026 Update Details PineNote and PineTab2 Progress
Pine64 has published a community update following FOSDEM 2026, outlining recent development activity, hardware demonstrations, and production challenges affecting its device lineup. The update highlights progress on PineNote and PineTab2 software, early work on PineTime Pro, and the impact of the ongoing DRAM shortage on several products. The FOSDEM 2026 event provided an opportunity for […]
Alibaba XuanTie C950 – A powerful, RVA23-complaint 64-bit RISC-V core for Edge AI computing
Alibaba has introduced the XuanTie C950 high-performance, 64-bit multi-core CPU IP with an out-of-order superscalar microarchitecture, RVA23 profile compliant, and support for “all optional extensions” such as Vector Crypto, Zacas, and Zama16. The company also says the XuanTie C950 supports the proprietary XuanTie AME (Attached Matrix Extension) ISA and supports integration with the company’s XuanTie TPE (Tensor Processing Engine) IP. The new 64-bit RISC-V core will be found in SoCs with up to eight cores per cluster, targeting high-performance applications, such as cloud computing, edge computing, and AI computing. XuanTie C950 specifications: Architecture – RVA23 Profile Up to 8x cores...