Noctua Fan Swap on a Calnex Rb/GPS Frequency Reference

Since this will be the only source of this process on the Internet1, I figured I'd document a quick fan swap I did on a piece of test/reference equipment I'm running in my Atomic Clock Tower.

I took my Torx T10 screwdriver and popped off the top cover. The screws required some force to loosen, as they were all secured with Loctite.

The inside is simple and serviceable. There's a SpectraTime GRClok-1500, with an integrated timing-grade GPS module, and a stabilized 10 MHz output2.

ESP32-C6-DevKit-Lipo becomes a Matter light: a step-by-step guide

Matter is the smart-home standard that Apple Home, Google Home, Amazon Alexa and SmartThings all speak. It lets one device work across platforms without being locked into a single vendor’s ecosystem. We wanted to show how easy it is to start developing Matter devices on open source hardware, so we wrote a complete, tested guide […]

Name that Ware, October 2026

The Ware for October 2026 is shown below:

Another contribution from FETguy and Renew Computers! I found this board to be interesting mainly because I always wondered how these things worked. The construction reveals a trick which ended up as a surprise, at least to me!

A couple of administrative notes – I am counting my blessings that this site is still up despite the heightened level of CVE’s. This is an aging WordPress blog (its origins pre-date “the cloud” and HTML5!), which uses PHP at its core, and kudos to Pair Networks for being on top of it...

Winner, Name that Ware September 2026

The Ware for September 2026 is a tire pressure monitor from a late 80’s to early 90’s model Porsche, made by Bosch. According to the submitter:

Apparently they were deeply unpopular since the sensor mechanism used transponders fitted into pockets in special wheels, which meant lots of alarms when owners changed to wheels without the transponders. Each wheel’s suspension mounted an antenna operating at a “high frequency” of probably a few MHz. When a tire’s pressure dropped below a threshold, a pressure switch in the transponder would open or close, which would change the signal sent back, and this...

The museum I volunteer at has been seized by the NSW government and they intend to destroy it

Museum collections in peril, volunteers fearful, charity fighting to get the ship and its contents back.

Clothes Rail

[Misc] Tubular

Ubiquiti's $99 Vape Detector is actually pretty good

Since learning about the effects of high CO2 concentration on attention and cognitive performance—especially at levels much higher than 2000ppm—I've started monitoring CO2 and other air quality indicators in my house, at my studio, and even on the road.

I have a few other air quality monitors I'll be covering in the future, but today I wanted to focus on one I only heard about in the comments on a recent video tearing down a cheap no-name 'Air Quality Detector' from Amazon.

Оживляем дисплей от приборной панели автобуса

Приветствую всех!

Насколько сложно запустить приборную панель от автобуса, грузовика или ещё какой-то спецтехники и вывести на неё какие-нибудь данные? Возможно ли вообще это сделать? Самое время выяснить это, попробовав провернуть всё самому.

Итак, сегодня мы попробуем запустить дисплейный блок от приборной панели старого автобуса. Разберёмся, по какому протоколу он работает и что с ним ещё можно сделать. Как водится, будет много интересного.

Memory safety where it matters most: CHERI for OpenTitan

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Upgrade your PHP installs immediately to protect against php2shell

This morning, two critical PHP Security Advisories were published:

If you're running PHP for any service, you need to upgrade immediately to 8.2.35, 8.3.36, 8.4.27, or 8.5.12. And if you use Remi's repos on RedHat-derivative Linux distros, you need to switch to official repos temporarily as Remi's on vacation and can't update his community repo. (Reminds me of xkcd 2347). Remi pushed updates even while on vacation!