D'où vient l'heure de votre ordinateur ?
Des horloges atomiques aux satellites GPS, un article qui fait le tour complet des fondements de la mesure du temps (et ça passe par Paris aussi)
dotat.at/@/2023-05-26-whence…
Into the rabbit hole with @fanf on where does my computer get the time from?
I knew that NTP relies on atomic clocks but apparently, it involves earth rotation time and a lot of other data layers in between.
An interesting read!
#utc#time#engineeringdotat.at/@/2023-05-26-whence…
More vandalism from @elonmusk. Twitter has now removed all media posted before 2014. Thats - so far - almost a decade of pictures and videos from the early 2000s removed from the service.
For example, here’s a search of my media tweets from before 2014. x.com/search?q=From:tomcoa…
Community note
Images before/around 2014 are still saved on Twitter/X's servers, however, the t.co links appear to be broken at the moment.
The famous Ellen DeGeneres selfie from the 2014 Oscars is currently missing from her tweet.
twitter.com/EllenDeGeneres…
But the original file is still available on their servers.
pbs.twimg.com/media/BhxWutnC…twitter.com/Accountabilabu…
ALT a compact keyboard; most of the keycaps are warm grey with white legends, but the modifiers and special keys are black and white, escept for escape and arrows which are red and white; to the right is a Kensington Slimblade trackball, and below both of them is a dark wooden wrist rest
ALT un-assembled parts of keybird69: a black switch mounting plate on top of a black base plate, with a lego beam and some screws and rivet nuts placed to show how they will fit together
After some faff getting git repositories into shape, here are some notes on making the PCB and plates for Keybird69
dotat.at/@/2023-08-09-kbpcb.…
here's the hero image from the blog post, you will have to click through to enjoy the awesome purpleness of the actual PCB
ALT a picture of the waveshare rp2040-tiny microcontroller and usb boards, a kailh hotswap socket, a key switch, a blue alt keycap, and a batman lego minifigure for scale
We can fight back.
The Fun Way- All you need is a cone and an empty AV. Gently place the cone on the hood- you just created a 🦄 & temporary traffic calming!
The Responsible Way- Tune into next week’s CPUC meeting (7/13) at 11am & give public comment. tinyurl.com/WeekOfCone/
ALT Self-driving cruise car with a cone on its hood at night
on my blog!
the PCG64 DXSM random number generator
dotat.at/@/2023-06-21-pcg64-…
where it comes from, and wherefore, with several links to enlightening articles by eminent authors
and an implementation for you to clone and hack, it's like a dozen lines of code
another random thing i learned recently is a neat way to get uniformly distributed floating point numbers 0.0 <= n < 1.0
(double)(pcg64_random(rng) >> 11) * 0x1.0p-53
i blogged about it!
dotat.at/@/2023-06-23-random…