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Jeff Geerling

Jeff Geerling is a developer, author, and tech creator who shares hands-on experiments with Raspberry Pi, Linux, open source software, and homelabs.

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Jeff’s happenings, collected from public sources, plus their backstory and Starbook, where fans write.

Jeff Geerling Oct 30

Explaining the end of leap seconds

Jeff published a video and companion post explaining the decision to end leap seconds in UTC, and why timekeeping bugs matter to programmers.

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Jeff Geerling Oct 27

A quieter atomic clock setup

He documented a Noctua fan swap in the Calnex rubidium/GPS frequency reference used in his Atomic Clock Tower, making it easier to run near his desk.

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Jeff Geerling Oct 23

Taking apart a Ubiquiti air quality monitor

Jeff tested Ubiquiti’s $99 vape and air quality sensor against his other monitors, then opened it up to identify the sensor inside.

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Jeff Geerling Oct 14

Trying resin printing with the Form Studio 1

He reviewed the Formlabs Form Studio 1 and shared his first experience with resin printing. He also spoke with KRALYN, who headed the printer project, about its engineering tradeoffs.

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Jeff Geerling Oct 9

Putting Radxa’s Dragon Q8B to the test

Jeff compared the Snapdragon-powered Dragon Q8B with the Raspberry Pi 5, covering performance, expansion options, and the complications of getting Linux set up.