You should buy a Scurfa dive watch

TL;DR It’s sold at cost and you literally and actually cannot buy a more legit dive watch. $268 at your door. Framing the narrative Back when diving was dangerous and new, companies like Comex and militaries like the French navy commissioned then-new watches to be used for measuring elapsed dive time. Advances in materials and […]

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Quantified self

So I bought a heart rate sensor, the Polar OH1 Plus. (Based entirely on this epic review from DC Rainmaker.) I am curious about fitness and have been liking the 0.5Hz readings from the Motiv. So this new one should provide better data. And it has a VO2 max fitness test, which of course I […]

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OBD-II monitoring the Bolt

Since I got the Bolt I’ve been looking for a way to view OBD-II data. For those who’ve not encountered it, OBD-II is a specification and connector; all vehicles since 1996 have it. (More at Wikipedia) The Bolt didn’t work with my copy of EngineLink, but… today it does! The secret is this google docs […]

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Shake your bootie

I’m a fan of musical mashups, which often have clever superpositions of melody and counterpoint in them. Or just be catchy. Or good to sing/dance/drive to. The ‘Best of Bootie‘ annual is a great place to go, with free downloads of singles and full mixes. The 2018 disc just dropped and I’m enjoying it now. […]

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Three good things

I had a good Christmas and wanted to share! First off, a Kickstarter that delivered on time, a really good Raspberry Pi case, the Argon ONE: Here’s the back, showing the magnetic GPIO cover and rearranged port layout. Simple, clean and elegant. You can get one via their Kickstarter page. It adds a shutdown/reboot circuit, […]

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Power

I like having ways to see and measure things. Here is my server build: Here is a simple AC wattmeter showing its consumption: And here’s the system in infrared showing hot spots: Measure and don’t just guess. More on low power Linux to follow;).

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