2024-03-01 listening in on the neighborhood

• sbts-aru

  22 92 9.4 Shell

  Low cost Raspberry Pi sound localizing portable Autonomous Recording Unit (ARU)

I have a project for the Raspberry Pi that provides for sound localization via time difference of arrival (TDOA). In a similar manner I suppose as shotspotter.

There was a case recently in America where a grandfather was jailed for a significant part of a year based on a shotspotter localization and no other physical evidence such as gunshot residue.

If citizens in such areas run their own systems they would have a means to provide counter evidence to that provided by shotspotter. Currently they have no means to do that. Even the times of the shots that have to take shot spotters word for it.

Recordings by citizens themselves is an inherently safer approach because their sphere of influence is considerably smaller. Recordings are written to a separate partition on an SD card, it’s pretty simple to encrypt this partion as well if you like, I’ve done that.

For those who are interested each node can be made very cheaply. It will run on a Raspberry Pi zero with a 7 euro GPS. It can also run portably on batteries.

Here are relevant links:

https://github.com/hcfman/sbts-aru

https://hackaday.com/2023/12/30/localizing-fireworks-launche...

https://medium.com/@kim_94237/tdoa-sound-localization-with-t...

• shot-scraper

  16 1,531 7.1 Python

  A command-line utility for taking automated screenshots of websites

If anyone wants the raw data, it's available in window._Flourish_data variable on https://flo.uri.sh/visualisation/16818696/embed

Which means you can extract it with my https://shot-scraper.datasette.io/ tool like this:

    shot-scraper javascript \

• WorkOS

  workos.com sponsored

  The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.

  

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