xyx0826

4 ms·

1.
by xyx0826 12d ago
Neat. I’ve been watching a lot of Nvidia board level repair videos; the technician would occasionally probe the SPI signal lines to the flash chip containing “VBIOS” code to see if the GPU shows signs of life. Given no external microcontrol
2.
by xyx0826 2mo ago
I remember reading an analysis on one of those projectors; the author found a residential proxy running on their device. I would recommend keeping these things off the internet.
3.
by xyx0826 5mo ago
Root persistence is more for encouraging you to report all bugs you’ve found instead of holding on to them in fear that the vendor will patch them and make further research difficult. See Apple’s security research device program.
4.
by xyx0826 5mo ago
Notably this bill covers Class 2 and 3 ebikes, not Class 1. The key distinction here is Class 2/3 features a throttle that lets you accelerate without having to pedal. IMO Class 2/3 bikes are more of a bike/moped hybrid than
5.
by xyx0826 5mo ago
If you analyze binary files often, I highly recommend binvis - http://binvis.io/ . It creates a colored minimap for files it loads and has two available arrangements. Pixel color is based on range of bytes, eg ASCII/nul
6.
by xyx0826 9mo ago
You seemed to have made an account just for this reply. Care to explain the cynicism? I’m out of the loop with the toxicity.
7.
by xyx0826 10mo ago
Here’s a tangent discussion from a while ago that I enjoyed, on bootstrapping PoE (Power over Ethernet) from UEFI: https://news.ycombinator.com/item?id=44111609 Looking back, funnily the top comment drew a parallel to negot
8.
by xyx0826 1y ago
Valetudo. I haven’t had personal experience using it (due to an unsupported model of NAND memory chip), but I’ve heard good words: https://valetudo.cloud/ That said, I did some research last year before buying my first robo
9.
by xyx0826 1y ago
Is it necessary to prevent the water from freezing? If the chamber and water within are subzero while the SoC produces sufficient heat, the ice would simply melt. * Edit: the article mentioned freezing could crack the seal. Freezing would b
10.
by xyx0826 1y ago
I applaud his efforts to document this what must’ve been a nightmare of a case for him. But it felt like a lot of the wording is speculative or hyperbolic in nature and aggressively tries to paint Volvo in a bad light. For example: “Analysi
11.
by xyx0826 1y ago
Before I came across this tool, one use case I’d conceived for a tool like this is to help in debugging and reverse engineering. One could hook this up to a microcontroller under test/analysis and essentially monitor its “disk I/O
12.
by xyx0826 2y ago
Files looks great but it has performance issues and occasional crashes when I tried it out a few months ago. When going into subfolders, there is a very noticeable subsecond lag which I don’t get from native Explorer. For all complaints of
13.
Crashing rockets and recovering data from damaged flash chips(dontvacuum.me)
70 points by xyx0826 2y ago|13 comments
14.
by xyx0826 2y ago
> you have a bunch of very smart young people absolutely dripping with theory knowledge and close to zero relevant real world experience For sure! And that’s perhaps the #1 reason these teams are so valuable: it’s an environment to get h
15.
by xyx0826 2y ago
I think college student teams strike a combo of time, talent and resource that would be surprisingly hard to come by in the larger “civilian world.” In college, you have a bunch of freshly educated, similarly minded people in one place with
16.
by xyx0826 2y ago
Thank you for Outline, I used to self-host it for a team and it was a breeze compared to Google Docs or confluence. Does it support the use case of publishing the wiki as a public documentation site, while allowing authenticated users to ed
17.
by xyx0826 2y ago
With an ESP32 or comparable (RPi Pico W, for example) you get MicroPython or CircuitPython support! That means a Python interpreter, drivers for popular peripherals and usually a network stack. Performance doesn’t beat a native SDK but Pyth
18.
by xyx0826 2y ago
The Voyagers’ protocol use no encryption and the specification appears to be public. I’ve linked a PDF of what appears to contain the protocol description below. So anyone with a *large enough* antenna can talk to it. It just happens to be
19.
by xyx0826 2y ago
It’s a bit of a pain to set up and self host the container stack but Outline has been great for me. Does anyone have experience with using Outline as a public facing docs/blog site?
20.
by xyx0826 2y ago
My job involves 60% writing software and 40% testing with hardware. I work about 5% of my days from home, when I’m sick or have other obligations. I don’t have the space, time or incentive to set up a home office in the place I live. This u
21.
How the Master Clock Sets Time for the World (2014)(vice.com)
1 points by xyx0826 2y ago|0 comments
22.
by xyx0826 2y ago
If anyone is interested in a game themed shipbreaking/dismantling things, check out Hardspace: Shipbreaker. Instead of oceanic ships one gets to take apart spaceships and sort the salvages like garbage-recycle-compost. https:/&#x
23.
by xyx0826 2y ago
Not my idea but here’s an interesting opportunity to iterate on nonetheless. “event[0]” is a singleplayer sci-fi RPG where you communicate with an AI on a stranded spaceship, essentially a chatbot, to progress the game and learn its story.
24.
by xyx0826 2y ago
> … anyone using other than embedded iOS/Android work. I’m talking businesses with 8 or 9 digit revenue… The use case and revenue doesn’t have to be contradictory, I guess? What do you mean by “serious work”? iOS and macOS and their
25.
by xyx0826 3y ago
Third party GPU repair is a big business and many GPU schematics and boardviews somehow find their ways from corporate SVN servers to paid forums and google drive links. They would provide enough information, like net names, to identify the
26.
by xyx0826 3y ago
I’d be curious to see the actual design. How much existing aluminum are they replacing with wood? Assuming the wood is purely structural, doesn’t that leave solar panels and internal propulsion/electronics as is which happen to make up
27.
by xyx0826 3y ago
> This exercise has reinforced my prejudice that IoT devices are horribly insecure. Generally I agree with this assessment for home IoT devices, but I’m curious does this hold true for industrial or transportation? Can someone point me t
28.
by xyx0826 3y ago
I know some MediaTek WLAN chips come with MIPS cores clocked at more or less 1 Ghz, like the MT7621. TLS should be trivial; I believe the thing that matters is how much time/money/design the company is willing to spend on security
29.
by xyx0826 3y ago
The choice of microcontroller matters. Functional safety qualified MCUs might have the same CPU core but is built in a way that minimizes interference or common cause of failures between peripherals. The software needs to be written closely
30.
by xyx0826 3y ago
Can you provide sources on this? I’ve never heard of their AI chip.

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