Readit News logoReadit News
winkywooster commented on No-boom supersonic flights could slide through US skies soon   theregister.com/2025/05/1... · Posted by u/rntn
losvedir · 7 months ago
Growing up I always thought a sonic boom was something that happened once when you broke the speed of sound.

I now understand that's not the case, but still don't quite know what it is. I think a supersonic aircraft is constantly "dragging" a boom behind it. So when it passes overhead sometime later you'll hear a boom. Is that right? Does that mean you'll see a plane flying overhead, hear the normal drone associated with it, but at one particular moment here a distinctly louder but shorter noise?

And is this a real thing that can be done? How do you make the sonic boom go away? As someone who lives where planes are flying overhead constantly, can it be used to make non-supersonic planes quieter, too?

winkywooster · 7 months ago
growing up i remember experiencing sonic booms a handful of times. i never heard or saw the plane, it would just be the sound and feeling of the boom.
winkywooster commented on Espressif's ESP32-C5 Is Now in Mass Production   espressif.com/en/news/ESP... · Posted by u/radeeyate
winkywooster · 7 months ago
how much memory does the dev kit have? it’s not clear after following links off that article.
winkywooster commented on GarminDB   github.com/tcgoetz/Garmin... · Posted by u/haltcatchfire
jo-m · 10 months ago
What you can always do to get ALL your raw data out of Garmin connect (as FIT files) is using the data export (https://support.garmin.com/en-US/?faq=W1TvTPW8JZ6LfJSfK512Q8).

There are some good OSS libraries to read and interpret those files (e.g. Python https://github.com/polyvertex/fitdecode, Go https://github.com/tormoder/fit).

To get your _current_ data, it is possible to pull the current .FIT files from your device (watch, bike computer, ..) when it is plugged to your computer and mounted as file system.

I once started a side project to do exactly that, but abandoned it after a while (https://github.com/jo-m/garmin-disconnect).

winkywooster · 10 months ago
um, have you tried to export all your raw data from garmin? i have 15 years of logged data, and that dump does not include any fit/gpx/tcx files. it was 196 json files (228mb) which are just high-level summaries. using one of the hacky third-party export libraries, i was able to get the actual fit files (5708 files, 373mb). even that has missing files, empty files, and duplicates. very frustrating.

the lesson i learned is you can't just expect these exports from any online services to be complete or what you expect. i highly recommend going through an export of anything you depend on and see if it has what you expect.

u/winkywooster

KarmaCake day1950May 4, 2007
About
winkywooster.dev/about
View Original