sbts-aru
plots2
sbts-aru | plots2 | |
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25 | 6 | |
140 | 956 | |
- | 0.5% | |
9.4 | 0.0 | |
4 months ago | 26 days ago | |
Shell | Ruby | |
GNU General Public License v3.0 or later | GNU General Public License v3.0 only |
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sbts-aru
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Long distance sound localization with the Raspberry Pi
My project, sbts-aru,
https://github.com/hcfman/sbts-aru
uses a GPS to synchronise the time with and then even when running completely disconnected from any network the clocks will be accurate to real time with less than 1 microsecond of error. Typically the system time hovers around 100 ns or less from the real time. And I’ve tested this by triggering interrupts on gpio’s on two devices with the same switch and printing the time.
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How Home Assistant is being used to protect from missile and drone attacks
Nice to see people able to use tech to help reduce/manage their stress/trauma in such horrific situations.
Good point about telegram. As much local control as possible is desirable. Do the text to speech interfaces work offline with the chosen devices ? If so, I’ll likely have a play.
I have a project that might be able to help with your situation. A Raspberry Pi based sound localization system. It’s very accurate. Last weekend I localized an explosion (fireworks) to within 20m from the actual location with 4 recorders. two of which were 3km from each other.
Unlike most ARUs (autonomous recording units) which are based on microcontrollers and need post processing to determine an event start time, the Pi system could be used as the basis for a real time localization system as the system times is sub microsecond accurate.
With likely a small amount of new development and co-operation with your friends you could be alerted in real time when artillery or gunfire is getting close to you. Along with a map location of where it was fired from
My license forbids government use (attaching consequences to the small developer unfriendly cyber resilience act that is stealing from small developers and giving to rich ones) but personal civilian use is just fine.
https://github.com/hcfman/sbts-aru
(PS. I agree on with the sentiments of the above authors about war. It’s sad that our governments instead of putting everything into driving to peace are spending our future climate change defence money on destruction and they are gunning for it with an insane appetite)
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RTK Experiments
Nice article and lovely piece of kit that one from sparkfun. Will likely be getting one next year to further my experiments with gunshot localization, on my Pi-based sound localization platform (https://github.com/hcfman/sbts-aru). Though at the distances I'm using the phone based GNSS seems to be working quite well.
With an RTk GNSS though I could do some experiments with localizing bat calls. I've tested the Pettersson Ultrasonic microphones with my localization platform and that works fine. I suspect that the bat localization I could achieve if my co-ordinates had RTK accuracy would be pretty damned good! But I have to try it to know.
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Going in circles without a real-time clock
Unfortunately a Raspberry Pi is a bit ill suited for production environments. Id recommend an RTC module. Otherwise this might be helpful: https://github.com/hcfman/sbts-aru
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Running a Raspberry Pi with a read-only root filesystem
If you install my sbts-aru project
https://github.com/hcfman/sbts-aru
It will shrink your partitions, add news and install one of these and set up a sub micro second system clock and an audio recorder suitable for sound localization with a single install command.
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2024-03-01 listening in on the neighborhood
I recommend primo EM272 microphone capsules for use with https://github.com/hcfman/sbts-aru. They are high quality, very sensitive with high signal to noise ratio, lauded for nature recording use cases. They can be bought assembled for around 65 euros in the Netherlands. However these capsules are often found in much more expensive equipment.
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Considerations for a long-running Raspberry Pi
My sound localizing Raspberry Pi installs a resilient base system as part of its install.
https://github.com/hcfman/sbts-aru
https://hackaday.com/2023/12/30/localizing-fireworks-launche...
With one command it for all Pi’s for both Raspbian and bookworm it:
* Shrinks the file system (Gee, how does it do that with just one disk ? ;-) )
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Colorado wolf reintroduction to move forward as ranchers' legal effort fails
I have a sound localization project that can help with that
https://github.com/hcfman/sbts-aru
You need to be able to hear the sound from three or more recorders. And normally localization is better within the polygon of microphones but there’s an area of better localizability extending outside of a vertex.
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Acoustic Location and Sound Mirrors
Interesting history!
And while we are in the subject of sound localizing may I take the liberty of introducing my new raspberry pi sound localizing audio recorder.
https://github.com/hcfman/sbts-aru
It installs with one command on all Raspberry Pi versions and synchronizes the system time to less than 1 microsecond of error with a cheap GPS.
With three of these I’ve been able to sound localize the explosions from illegal fireworks to a specific car park from more than 3km away with lots of houses in between.
When I got to the car park I could smell the sulphur from the fireworks.
This will even run on a Raspberry Pi zero running of a battery with a 6 euro neo 7m gps and a 6 euro usb mic.
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AI tool helps ecologists monitor rare birds through their songs
Very nice tool!
So grab a spare Raspberry Pi, a GPS, a cheap USB sound card and a mic and get recording with this Pi based Acoustic Recording Unit
https://github.com/hcfman/sbts-aru
And while you are at it, install 3x or more and localize where the birds are.
plots2
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Ask HN: Comment here about whatever you're passionate about at the moment
Citizen science! It's great when people realize they can answer their own questions with observation and data, and for activism because data is a powerful story. One friend of mine started https://publiclab.org to feed this, and another is doing data journalism to highlight holes in the government's environmental data. https://www.muckrock.com/project/
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A step-by-step for doing your first open source contribution (and finding where to do it)
My first contribution ever was to PublicLab's plots2 back in 2018. I had no idea what I was doing or what plots2 was. What attracted me was how welcoming they were (and still are) to first time contributors. With them: I opened my first PR, discussed in PR's conversation, and pushed the changes requested. Back then, that was a lot!
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Search function on a website I'm getting built
Hmm so to your first question: That pattern of selecting from a pre-populated list is often used with a tag or chip system where you can select and deselect one or more items from the list, something like this: https://github.com/publiclab/plots2/issues/6026 in this case the search CTA acts as the final decision to search while the selections are populating the search criteria. It sounds your system design is a bit different though. Sounds to me like an issue of heuristics of UI https://www.nngroup.com/articles/ten-usability-heuristics/ the third heuristic states:
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Are there places for amateur researcher to post their work?
Maybe public lab would be a good home? https://publiclab.org/
- what ruby or rails open source projects a beginner-to-intermediate developer can easily contribute to?
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Hacktoberfest: 69 Beginner-Friendly Projects You Can Contribute To
https://github.com/publiclab/plots2 A collaborative knowledge-exchange platform in Rails; we welcome first-time contributors! balloon
What are some alternatives?
al-ahli-hospital-blast
ArchivesSpace - The ArchivesSpace archives management tool
BirdNET-Pi - A realtime acoustic bird classification system for the Raspberry Pi 4B, 3B+, and 0W2 built on the TFLite version of BirdNET.
matplotlib - matplotlib: plotting with Python
Bitgrid - Bitgrid - a new model of computation
WebsiteOne - A website for Agile Ventures
running_page - Make your own running home page
textbook-curriculum - Ada Developers Academy Online Curriculum
random-ideas - random ideas
export-pull-requests - Export pull requests and/or issues to a CSV file. Supports GitHub, GitLab, and Bitbucket
logseq-sync - An open-source Logseq Sync backend implementation
Rubocop - A Ruby static code analyzer and formatter, based on the community Ruby style guide. [Moved to: https://github.com/rubocop/rubocop]