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The software I could never justify building — and why LLMs changed that
I recently made the mistake of asking GitHub and GitLab what I had worked on during the previous twelve months. The answer was ridiculous: sixty GitHub repositories with my commits, forty-two GitLab project IDs with activity, and enough overlap, mirrors, experiments, libraries and product work to ma…
Simsalabim — giving the iOS Simulator hardware powers
The iOS Simulator is a wonderfully fast place to build an app — right up to the moment the app needs something that belongs to the physical world. Bluetooth discovery returns nothing, there’s no camera, Core NFC is unavailable, and a freshly created simulator has no contacts, appointments, remi…
The Cables that Connect the World
At the northeastern edge of La Línea de la Concepción, on a scrubby Mediterranean beach called El Burgo–Torrenueva, there is an old battlement-tower, La Torre Nueva, and not much else. It was part of the system of coastal watchtowers during the 16th century that would defend the area against the incursion of the Barbary corsairs. The coordinates are 36°12′36″N, 5°19′27″W. Walk the tideline and you would never know that buried two meters beneath the sand, a fiber-optic cable comes out of the sea here and turns into the internet. It’s the start of a line that runs across the Strait of Gibraltar to Ceuta, on the African coast,...
Two questions macOS should answer — lsaudio and lsusd
Some tools begin with a roadmap. Others — like these two — begin with a question you ask yourself often enough that irritation wins. At my desk, two questions kept coming back: What is making that sound? What exactly is connected over USB? macOS knows both answers. CoreAudio knows every process th…
Flipper BUSY Bar
Yes, it is in fact real, I’m holding it in my hands, and after what feels like years of Flipper teasing everyone with this ominous device in various online posts, I can finally confirm that it is real.
The BUSY Bar is a 250 gram desk device by Flipper Devices, the company behind the Flipper Zero and the still very much in-development Flipper One. It’s basically a little display that shows various things on a 72x16 RGB LED matrix, and as of writing this its main selling point is that it can run a Pomodoro-style focus timer, and that it has a full-blown HTTP API that’s available over...
Recreating a Titanic Spark-Gap Transmitter with Python, High Voltage, and ESP32
Let’s Bring Back Some Wireless History
Continue reading on Level Up Coding »
2026-07-27
This friday (31 july) there will be scheduled maintenance of the suckless servers.
It's estimated this will take about 1 hour.
The mailinglist, website and source-code repositories will have some downtime.
Update: the update was performed on saturday (1 august). Everything should work again.
2026-07-27
slock 1.7 released: download
This contains an important security and reliability fix: https://git.suckless.org/slock/commit/55d985a354048e14f408dd731faaf1acbdc277f4.html