andrewcchen

7 ms·

1.
by andrewcchen 11mo ago
So like LiveContainer[1] which works around ios's signing requirements [1] https://github.com/LiveContainer/LiveContainer
2.
Alibaba cloud servers being 'carefully dried' after firefighter drenching(tomshardware.com)
8 points by andrewcchen 2y ago|1 comments
3.
by andrewcchen 2y ago
It's not an e-ink display, but rather a monochrome transreflective lcd. [1] [1] https://www.reddit.com/r/eink/comments/1bk294i/comment/kvx17...
4.
by andrewcchen 5y ago
I'd say they are bad because they aren't very power efficient. There are boards with nrf52 chips that already have qmk support iirc.
5.
by andrewcchen 5y ago
Yes, custom cores in the sense of what apple does.
6.
by andrewcchen 5y ago
The cores don't serve the same purpose as the M1 cores. M1 is optimized for single thread at the cost of die size (and a bit of power). I don't have exact numbers, but say the apple M1 core takes 1.5x the die area of N2, the you&#
7.
by andrewcchen 5y ago
Fairing recovery is not abandoned, they decided to fish them out of the water after a soft landing instead of catching them with a net.
8.
by andrewcchen 5y ago
Digikey pricing is not indicative of actual volume pricing, especially for FPGAs where they are often many times overpriced when buying from distributors. I doubt the board is sold at an loss, probably sold at a small profit, not that'
9.
by andrewcchen 5y ago
The circulator[1] is an analogous component in rf, it send the incident power from any port down to the next port, so you can take one port to be the bidirectional connection, and it splits the signal into transmit and receive connections.
10.
by andrewcchen 6y ago
The trick to doing smd soldering is reflow. On all budget all you need is a hot air gun, if you put solder and flux on the pads manually before placing the components. With a stencil and solder paste you can save the time tinning the pads,
11.
by andrewcchen 7y ago
It takes a combination of software and hardware to get good power consumption. In this case, assuming the author has implemented sleep modes on the microcontroller, it's probably the 3g module being not very power efficient.
12.
by andrewcchen 7y ago
This is only a cpu core. It lacks the memory controller and peripherals that make a SoC work. It will probably never make its way into a chip tapeout.
13.
by andrewcchen 7y ago
In recent years the node names don't correspond to any physical dimensions of the transistors anymore. But since density improvements are still being made, they just continued the naming scheme. https://en.wikichip.org/
14.
by andrewcchen 7y ago
It's in a QFN not QFP package
15.
by andrewcchen 7y ago
mitigations=off is all you need on a recent kernel
16.
by andrewcchen 7y ago
I'd love to know what makes this theorem so useful, but I doubt I will understand much considering this is in an area of math I know almost nothing about. I imagine it must be very hard to explain the theorem while making it accessible
17.
by andrewcchen 7y ago
In a previous post he said it's 8 years old
18.
by andrewcchen 7y ago
> Bitcoin appears to have greater staying power than most nations and currencies in history. I would not make that statement so soon. Bitcoin has only existed for 10 years. Most nations and currencies, at least in recent history, have la
19.
by andrewcchen 7y ago
The booster's trajectory targets offshore or away from droneship in case landing burn fails. The landing burn brings the booster onto the landing pad. See CRS-16 where the booster landed in the water when the booster lost roll control
20.
by andrewcchen 8y ago
There's a typo in launch.sh that breaks when you try launch in debug mode > "{$DEBUG_PORT}"
21.
by andrewcchen 8y ago
For rendering yes. For video decoding no. Chromium needs a patch to use VA-API[1]. [1]: https://wiki.archlinux.org/index.php/Chromium#Hardware_video...
22.
by andrewcchen 8y ago
The title is misleading, they have most likely only been dead for a few months since their bodies were found still decomposing.
23.
by andrewcchen 8y ago
You can take screenshots by plugging a usb stick into the scope
24.
by andrewcchen 8y ago
Most computers have an Embedded Controller (with integrated flash) that does a lot of motherboard/system specific stuff like power management, flashing leds and even scanning the keyboard matrix on laptops.
25.
by andrewcchen 8y ago
Smallest feature size no longer correlates with transistor density in recent years. So manufacturers just use the number to convey increases in transistor density. See https://en.wikichip.org/wiki/technology_node#Histor
26.
by andrewcchen 8y ago
That one has an i7-5557U, compared to the i7-6500U the current one is selling with, so probably an early prototype.
27.
by andrewcchen 8y ago
They say on their website "Atheros 802.11n w/ Two Antenna" Wi-fi cards are actually a huge issue if you are concerned about privacy. You have no idea what the firmware is doing, and it has access to your entire memory through
28.
by andrewcchen 9y ago
> not going to the local police station whenever you stayed at a hotel/switched apartment/stayed at your friends/partners place I've never heard of this and I grew up in China. Can you provide a source?
29.
by andrewcchen 9y ago
Cortex M cores don't have MMUs, so they cannot be affected. Also in embedded applications you would only be running trusted code anyway
30.
by andrewcchen 9y ago
It seems like the domain expired, and now it redirects to a gambling site.

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