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FredFS456

502 karma · joined March 16, 2018

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FredFS456··on ABC News hacks into popular robot vacuum, watches owner through camera
Technical details here https://dontvacuum.me/talks/HITCON2024/HITCON-CMT-2024_Ecova...
FredFS456··on ABC News hacks into popular robot vacuum, watches owner through camera
Dennis works closely with the Valetudo developer. On one of the Valetudo Telegram channels, they announced the following:

> As you might know, we looked into Ecovacs as an alternative for Dreame&Roborock. However, we found security and privacy being completely broken. If you have a X2, a Goat lawnmower, or newer than 2023 devices, you might want to turn them off for now. There is a BLE RCE, that lets an unauthenticated attacker send a payload via Bluetooth, that gets executed as root on the device. It does not appear that Ecovacs wants to fix that. More information: https://twitter.com/lorenzofb/status/1822002515279270079 https://techcrunch.com/2024/08/09/ecovacs-home-robots-can-be...

FredFS456··on Cox slows Internet speeds in entire neighborhoods to punish any heavy users (2020)
It /is/ how it works with PON based fibre networks. See https://blog.init7.net/en/overbooking-how-providers-divide-u...
FredFS456··on U.S. court orders LibGen to pay $30M to publishers, issues broad injunction
There exist torrent archives of everything on libgen, you can theoretically download the whole catalog. I think it's their backup strategy.
FredFS456··on US FDA approves nasal spray alternative to EpiPen for allergic reactions
It's available again, I have two that I bought this year.
FredFS456··on Considerations when building embedded databases
Sqlite has a mode where you can give it an area of memory and it will never use any other memory.
FredFS456··on America’s Transit Exceptionalism
IMO you need both. Trams for local transit, metros for faster mid-range transit, and finally urban rail for long(ish) range transit.
FredFS456··on Linus Torvalds says RISC-V will make the same mistakes as Arm and x86
Did you mean the other way around? -m is intended for simple(r) microcontrollers whereas -a is intended for application processors.
FredFS456··on Electric Vehicle Batteries Surprising New Source of 'Forever Chemical' Pollution
I have never owned a car (lived in urban areas all my adult life) and I find that when I visit my parents in their suburban home, everything is less convenient when driving is involved.
FredFS456··on Do Skis Get Blunt?
Use ski straps, especially the type which has a rubber end that you can stick in between the skis. It prevents them from scissoring, which is harmful for both the edges and the base.
FredFS456··on No more boot loader: Please use the kernel instead
You can switch OS's using the UEFI menu instead. It's not always convenient, depending on your UEFI implementation, however.
FredFS456··on More Memory Safety for Let's Encrypt: Deploying ntpd-rs
Tab Separated Values, like CSV but tabs instead of commas.
FredFS456··on The misunderstood Kessler Syndrome
> It still takes a delta-V of ~30m/s to hit the Sun.

That number looks like it should be much much bigger to me.

FredFS456··on DDC OLED (2022)
That's not technically true - you can probe for I2C devices by only sending a START, an address, waiting for the client device to ACK (or not), and then sending a STOP. I don't think the linux kernel driver allows us to do this, but I've implemented this on some microcontrollers with lower-level control over the I2C hardware. It worked on all clients I tried it on.
FredFS456··on An open source initiative to share and compare heat pump performance data
My parents have always had an "outdoor fridge" that is a stainless steel equipment box that my dad salvaged from the junk pile at work. They put food in there that is less prone to spoiling, and use it through the fall/winter/spring months.
FredFS456··on The largest deep lake water cooling project just got bigger
The heated up water is consumed as drinking water. Excess water is returned to the lake.
FredFS456··on A rudimentary simulation of the three-body problem
I think symplectic integrators are typically used, which are derived from hamiltonian mechanics

https://en.wikipedia.org/wiki/Symplectic_integrator

FredFS456··on XZ Backdoor: Times, damned times, and scams
Mullvad accepts cash in an envelope with no return address, good luck tracing that
FredFS456··on Baltimore's Key Bridge struck by cargo ship, collapses
My civ engineer friend says that bridges are supposed to have barriers in front of their pylons for this particular reason - in the event of a collision, the barrier would be destroyed but not the pylon.
FredFS456··on Nvidia bans using translation layers for CUDA software to run on other chips
Nvidia trying to prevent adversarial interop by using EULAs. I doubt the Chinese companies will care, Intel and AMD may be sued if they don't comply. My understanding is that this means Intel/AMD will have to spend more time writing middleware (eg. ROCm's replacements for cuBLAS and cu* libraries) rather than run Nvidia's existing middleware on their own CUDA translation layer.
FredFS456··on Facing reality about the EU is a core requirement for good management
Two companies in the wind power top 10: Siemens of Germany, and Vestas of Denmark. As someone who worked for a while in Canadian wind power industry, the only other turbines I've seen deployed at scale here are the GE ones.
FredFS456··on Mozilla thinks Apple, Google, Microsoft should play fair
They tried with Firefox OS a while back https://en.m.wikipedia.org/wiki/Firefox_OS
FredFS456··on Unbloating the buffers
It's a software issue, but many routers are sold as appliances where the average user does not choose what OS to run. Therefore, a common recommended solution to bufferbloat is to replace the router with one whose software has more modern buffer management algorithms.

OpenWRT, for example, can be flashed on many older routers and will be able to solve bufferbloat without replacing the hardware.

FredFS456··on Macs can now inform Apple if any liquids have been detected in the USB-C ports
MacBook Airs no longer have ventilation
FredFS456··on United finds loose bolts on plug doors during 737 Max 9 inspections
I would expect lock wire or some other method of ensuring the bolt does not un-torque itself. Especially for bolts that are not required to be removed past final assembly...
FredFS456··on Active turbulence cancellation makes bumpy flights smoother
I believe the final solutions for airliners would be using LIDAR to detect airflow in front of the plane based on the particles in the air. There's a few scientific articles about it if you search, and I believe from second hand information that the big manufacturers (airbus and Boeing) are testing prototypes for deployment on next gen airliners.
FredFS456··on Still no love for WPA3 on the Raspberry Pi 5
I would imagine that anything supported by openwrt and has good feedback from the community would be solid.
FredFS456··on D.C.'s ban on cashless businesses takes effect
In that case you would often need gold, not cash.
FredFS456··on Fairphone 5 review: The most uncompromising repairable phone yet
They've offered camera upgrades before (https://www.fairphone.com/en/camera-upgrades-for-fairphone-3...) but not chipset.
FredFS456··on Fairphone 5 review: The most uncompromising repairable phone yet
I can find Fairphone 3 (and even Fairphone 2) parts here: https://shop.fairphone.com/shop/category/spare-parts-4/page/...

Is there a specific part you can't find?

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