New Open Source Hardware board with ESP32-C6 WiFi 6, Bluetooth 5 LE, Zigbee, Thread / Matter and LiPo UPS

The ESP32-C6-Devkit-Lipo is a evaluation board built around the ESP32-C6-MINI-1-N4 module from Espressif with 4MB Flash and 512KB RAM, designed to bring WiFi6 wireless connectivity, ample memory, and robust control features into one compact, breadboard friendly versatile package. All available signals are are on two 0.1″ step headers spaced at 0.9″ to may plug directly […]

Кустарные вакуумные триоды Клода Пайяра. Часть 4. Вакуумные насосы

Мы уже познакомились с Клодом Пайяром — французским радиолюбителем, в бытность, редактором журнала Radio-REF, энтузиастом-электровакуумщиком, воссоздавшим в своей мастерской кустарное производство практических триодов ТМ [1] (первых, 1920-х годов, промышленных «жёстких» — с высоким вакуумом, электронных ламп), и рассмотрели его самодельное огневое оснащение (Часть 1), установку для контактной сварки и технологическую печь (Часть 2), ламповую установку ТВЧ для дегазации электродов ламп при откачке (Часть 3). Сегодня мы взглянем на высоковакуумную установку Клода, самодельную, как и всё его оборудование.

Первые отечественные электронные лифты. УПЛ-10

Приветствую всех!

Давным-давно, ещё в советскую эпоху, большинство лифтов были релейными. Но уже в восьмидесятые начали появляться электронные станции. Конечно, до современных микропроцессорных систем им было очень и очень далеко, а построены они были на дискретной логике. Тем интереснее взглянуть на устройство таких блоков.

Так получилось, что ко мне в руки попала одна из таких станций управления. Так что сейчас у нас есть возможность посмотреть, как она устроена, и попробовать разобраться, как она работает. Традиционно будет много интересного.

The RAM Shortage Comes for Us All

Memory price inflation comes for us all, and if you're not affected yet, just wait.

I was building a new PC last month using some parts I had bought earlier this year. The 64 Gigabyte T-Create DDR5 memory kit I used cost $209 then. Today? The same kit costs $650!

Just in the past week, we found out Raspberry Pi's increasing their single board computer prices. Micron's killing the Crucial brand of RAM and storage devices completely, meaning there's gonna be one fewer consumer memory manufacturer. Samsung can't even buy RAM from themselves to build their own Smartphones, and small vendors like...

New Open Source Hardware board MOD-ESP32-C5 adds dual band WiFi6, Bluetooth 5 LE and Zigbee, Thread-Matter connectivity to any development board with UEXT connector

MOD-ESP32-C5 is compact 40x20mm development board which can be plugged to any development board with UEXT connector and adds dual band 2.4/5Ghz WiFi6 connectivity via Espressif ESP-HOSTED SDK. MOD-ESP32-C5 is available at olimex.com for only EUR 5.95

Why doesn't Apple make a standalone Touch ID?

I finally upgraded to a mechanical keyboard. But because Apple's so protective of their Touch ID hardware, there aren't any mechanical keyboards with that feature built in.

But there is a way to hack it. It's incredibly wasteful, and takes a bit more patience than I think most people have, but you basically take an Apple Magic Keyboard with Touch ID, rip out the Touch ID, and install it in a 3D printed box, along with the keyboard's logic board.

HackRF Pro Receive Sensitivity and Noise Figure

In the HackRF Pro specifications we’ve mentioned improved RF performance compared to HackRF One. Now that we’ve finalized any last tweaks to the RF front-end and production is well underway, we’d like to share some more details about the improvements.

One key metric for radio systems is sensitivity, which measures the minimum signal strength that a receiver can detect. However, for software defined radio hardware, sensitivity is difficult to define in a useful way as it changes depending on the modulation scheme in use and even the software implementation.

Instead we can look at noise figure: this measures the degradation in signal-to-noise...

How to Install Kali Linux in VirtualBox: Complete Setup Guide

Setting up Kali Linux in VirtualBox gives you a full penetration testing environment without touching your main operating system. You can test security tools, practice ethical hacking techniques, and learn cybersecurity skills in a completely isolated environment. If something breaks, you simply roll back to a snapshot. Your host system stays untouched. This guide walks […]

Kali Linux Commands: Essential Guide for Penetration Testing

Kali Linux isn’t just another Linux distribution. It’s a specialized operating system built specifically for security professionals, ethical hackers, and penetration testers. The real power of Kali Linux lies in its command-line tools. Over 600 security tools come pre-installed, each designed for different phases of penetration testing. Learning the essential Kali Linux commands transforms you […]

Types of Shell in Linux: Understanding Your Command Line Options

When you open a terminal on Linux, you’re conversing with a shell. That’s the program sitting between you and the operating system kernel, translating your commands into actions the system understands. Different types of shells in Linux exist because developers have different needs and priorities. Some Linux shell types prioritize scripting power, others focus on […]