sbts-aru
gokrazy
sbts-aru | gokrazy | |
---|---|---|
23 | 19 | |
94 | 3,154 | |
- | 0.4% | |
9.4 | 7.7 | |
3 months ago | 5 days ago | |
Shell | Go | |
GNU General Public License v3.0 or later | BSD 3-clause "New" or "Revised" License |
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sbts-aru
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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.
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Ask HN: Comment here about whatever you're passionate about at the moment
Sound localizing. I was intensely passionate about it when I saw the possibility to do it well on a Raspberry Pi. There were quite a few more problems than so expected which is why it took five months (of weekends) to complete it well.
But I’m super happy with the result and have a bunch of geeks with recording nodes setup a long distance apart. Localizing large explosions show that it’s possible to localize to a carpets even when some of the nodes are almost 5 away.
For those interested, here is the project:
https://github.com/hcfman/sbts-aru
- Localizing sound sources on a Pi anyone?
- Raspberry Pi based sound localizing audio recorder
gokrazy
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Considerations for a long-running Raspberry Pi
Switching to gokrazy[0] was the best thing I did for my Raspberry Pi uptimes. I think a lot of that is because it defaults to using read-only partitions so the common issue of SD cards falling over when you run apt upgrade no longer happens.
But I also think that gokrazy's simplicity and design helps it be just a solid, reliable foundation to build on top of.
[0]: https://gokrazy.org/
- Gokrazy – Go Appliances
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Easylkb: Easy Linux Kernel Builder
The idea there sounds a lot like https://gokrazy.org/, which builds a minimal go userland, wrapping one or more user provided go applications, and bundles in a linux kernel.
Targets mostly at single board computers, and I think it downloads pre-built kernels (and bootloaters if needed), rather than trying to build them directly, since getting a working cross compilation toolchain set up and plumbed into the kernel compilation process is still a pain.
I've personally only used yocto/open-embedded for that which does nicely handle building the cross-compilation toolchain, kernel image, and modules. But it is kinda overkill for that task, being designed to build a whole userland too.
- An Overview of Nix in Practice
- Gokrazy Go (Golang) Appliances
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Writing an OS in Go: The Bootloader
reminds me of https://github.com/gokrazy/gokrazy which does similar things.
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When is go not a good choice?
https://gokrazy.org/ would like a word
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Userspace isn't slow, some kernel interfaces are
Fun! We have support for running on gokrazy (https://gokrazy.org/) already, and that's probably where Unikernel Linux is more applicable for us, for when people just want a "Tailscale appliance" image.
I'll email you.
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go-rampart: a golang package to detect overlapping periods
gokrazy exists! https://github.com/gokrazy/gokrazy
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Can you build your own user space on top of the Linux kernel?
https://github.com/gokrazy/gokrazy for one example
What are some alternatives?
al-ahli-hospital-blast
buildroot - Buildroot, making embedded Linux easy. Note that this is not the official repository, but only a mirror. The official Git repository is at http://git.buildroot.net/buildroot/. Do not open issues or file pull requests here.
BirdNET-Pi - A realtime acoustic bird classification system for the Raspberry Pi 4B, 3B+, and 0W2 built on the TFLite version of BirdNET.
xbvr - Tool to organize and stream your VR porn library
Bitgrid - Bitgrid - a new model of computation
go-jtagenum - JTAG enumeration tool written in Go. A port of https://github.com/cyphunk/JTAGenum enhanced with https://github.com/grandideastudio/jtagulator improved implementation.
random-ideas - random ideas
tamago - TamaGo - ARM/RISC-V bare metal Go
logseq-sync - An open-source Logseq Sync backend implementation
qt - Qt binding for Go (Golang) with support for Windows / macOS / Linux / FreeBSD / Android / iOS / Sailfish OS / Raspberry Pi / AsteroidOS / Ubuntu Touch / JavaScript / WebAssembly
vimium - The hacker's browser.
nixos-anywhere - install nixos everywhere via ssh [maintainer=@numtide]