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Name that Ware, August 2026
The Ware for August 2026 is shown below.
Technically, this is an integrated circuit – just from a very different era than last month’s ware!
Winner, Name that Ware July 2026
The structure in question for last month’s ware are a pair of NPN transistors that form the core of a bandgap voltage reference circuit.
As its name implies, a bandgap voltage reference generates a near-constant voltage for use inside chips. The voltage is intended to be fairly constant over process variations, temperature variations, and power supply fluctuations. The circuit itself is extremely clever, using circuit elements that have offsets that move in opposite directions with temperature to cancel each other out. Without this circuit, chips would have performance characteristics that strongly depend upon its operating temperature. Therefore, almost every...
AI Image Generation on an RP2350 Microcontroller
I finally got around completing a long pending project idea: A diffusion image generation model implemented on a microcontroller. See blog article and repo.
Building a mini Homelab that fits in my carry-on
I'm traveling to Chicago for VCF Midwest next month. I'll be demoing NTP time history on vintage Macs, with my own GPS-derived NTP service hosted on an Xserve G5, synced via NTP or a strange AppleTalk timing extension from the 1990s.
So I built a little 'portable homelab' (pictured above) that supports 1-10 Gbps networking, can run off a small battery for at least an hour, switches between multiple WANs (so I can get my own 5G Internet connection, in case I need it), and gives me 12 wired Ethernet connections.
Кустарные вакуумные триоды Клода Пайяра. Часть 7. Обобщение, вакуумная обработка, мелочи
Вот и подошла к концу история о самодельных вакуумных триодах французского коллеги-энтузиаста, теперь уже почти что старого друга, Клода Пайяра, где мы познакомились, взглянули на исторические аналоги-прототипы его триодов, выяснили, как и чем Клод режет стеклянные заготовки и какими огнями работает [1]; изучили его технологическую мини-печь и аппарат для контактной сварки [2]; полюбовались большой ламповой установкой ТВЧ [3]; восхитились самодельными, как и всё остальное оборудование, вакуумными (и высоковакуумным!) насосами [4]; разобрались с тонкостями конструкции самодельной лампы [5]; и оценили специальные станки и приспособления для стеклодувной работы [6]. Осталось описать процесс изготовления лампы в целом, заострив внимание на оставшихся в тени важных мелочах, в основном в части обработки собранной лампы — откачка, измерения, оригинальный геттер,...
Охранные сигнализации советской эпохи
Приветствую всех!
Сегодня мы снова будем говорить о некоторых артефактах, которые можно найти на стенах старых домов. Многие из вас видели такие блоки и наверняка догадывались, что это часть охранной сигнализации. К чему же они подключались, и как работали эти устройства? Сейчас и узнаем...
Итак, сегодня посмотрим на начинку двух блоков охранной сигнализации разных годов. Посмотрим, с какими датчиками и оповещателями они эксплуатировались, узнаем, как выглядела постановка на охрану в те годы. Как водится, будет много интересного.
Press F1 to continueRepair: x270 laptop crashing when picked up or bumped
Neanderthal diagnosis techniques lead to a simple and complete repair.
Debugging Ubiquiti's 5G Backup on AT&T
For a mobile 'mini homelab' project I'm working on, I wanted to use 5G Internet as a primary 'on-to-go' connection, but still have the ability to plug in another Internet connection when I put the mobile rack I'm building in a fixed location.
I'll have more on that project soon, but I figured this project was a good way to check out Ubiquiti's solutions, especially considering many of their smaller gear fits nicely within the dimensions of a mini rack (the 3U DeskPi RackMate TT is pictured above).
OpenTitan project kicks off the Peppermint integrated root-of-trust for area-constrained SoCs
...
Getting the Steam Deck LCD working on a Raspberry Pi
The BOE TV070WXM-TV0 LCD used in the original Steam Deck can be had for around $30. It's a serviceable 7" touchscreen with 400 nits of brightness and a resolution of 1280x800 (for a sharp 216 ppi).
The specs are a lot nicer than the Pi 7" Touch Display, which costs twice as much, with giant bezels and half the resolution!
Until today, the Steam Deck LCD didn't work with a Raspberry Pi. But the folks at Scandent were trying to standardize on a mass-market touchscreen for one of their own devices, and built a Linux kernel driver for it which they intend...