ranma42

8 ms·

31.
by ranma42 4y ago
I know of at least one GDDR5 memory chip that should have chip art of a snake on the die.
32.
by ranma42 5y ago
That requires a hefty overclock though (252MHz instead of 133MHz).
33.
by ranma42 5y ago
> - I thought ARM32 has 12(-14) usable registers (compared to 14-15 in x86-64), so why these mentions of "scarce Cortex-M0+ registers"? Cortex-M0+ is thumb-only (compressed 16bit instruction encoding). "In Thumb state, the
34.
by ranma42 5y ago
The most precise for the hobbyist is probably a miniature atomic clock like https://www.sparkfun.com/products/14830 "loses a second every 4,000 years or so"
35.
by ranma42 5y ago
> they identified the dongle as a microprocessor, almost as powerful as the Rasberry Pi itself Well, its more like an order of magnitude slower than the Pi (and with a lot less RAM as well) > A very powerful wifi, bluetooth and RFID r
36.
by ranma42 5y ago
German-style number delimitors: '.' for thousands and ',' for the fractional part So the highest targets are 20000 EUR, which seems very reasonable. I think it's a bit silly to include the Eurocents though...
37.
by ranma42 5y ago
Wouldn't x86 have the higher code density? https://www.vogons.org/viewtopic.php?t=56207 "Finding an IA-32 CPU most like the MIPS R3000A" "a 40MHz MIPS R3000 gets 18.1 MFLOPS, while a 66MHz 486DX2 only g
38.
by ranma42 5y ago
My shell-script solution I've been using for the last year or two: #!/bin/bash src="pc" while true; do lsusb -d 04d9:a0d1 >/dev/null # Keyboard connected? ret=$? if [ $ret -eq 0 -a
39.
by ranma42 5y ago
I wish I could search for this feature in online shops parameterized search.
40.
by ranma42 5y ago
This might be related: https://blog.enablingtechcorp.com/planning-emergency-calling... "Routing emergency calls to the appropriate 911 Public Safety Answering Point (PSAP) is a legal requirement in the United States [.
41.
by ranma42 5y ago
> No one else can typically get them, they’re not available to people like you and me. Isn't that just setting the HAP (High Assurance Platform) bit in the ME blob to disable it after bring-up? For Intel platforms it is possible for
42.
by ranma42 5y ago
> CD-ROM sub-channels traditionally store metadata, mostly to guide the drive. These aren’t user accessible and conventional readers rarely allow to manually write over them. Maybe early CD-ROM drives couldn't read the side-channel
43.
by ranma42 5y ago
On newer Thinkpads with a built-in battery that you can't take out, you also normally have a hidden reset button behind a small hole on the bottom, which you can push with a paper clip. This "reset" button will soft-disconnec
44.
by ranma42 5y ago
> you can reinitialize your Nano S as a new U2F device According to the yubico explanation linked from article, U2F includes cloning protection (an authentication counter, which the site should check has increased vs. its last known valu
45.
by ranma42 6y ago
SNES is actually interesting in this context: The limited sample ram gives it some closeness to chiptunes, but otherwise the Sony chip can actually be considered closer to wavetable synthesizer cards. This is very different to NES/Game
46.
by ranma42 6y ago
In that context, mecrisp forth on a small micro[1] for doing simple embedded/sensor programming sounds like something I should try sometime... [1] https://jeelabs.org/article/1705c/
47.
by ranma42 6y ago
Also interesting on the spacecraft angle: Apparently spirulina will grow in dilute urine as a growth medium: "Attempts were made to culture Spirulina platensis in human urine directly to achieve biomass production and O2 evolution, for
48.
by ranma42 6y ago
> I interpreted that "Spend more to go to events" quote as being with regards to travel, rather than exorbitantly expensive meet-and-greets On that note: - While on vacation, buying event tickets short-notice on auction sites (
49.
by ranma42 6y ago
Anecdotally, the first Sony smart tv my grandma got (after her old tube TV died) managed to receive a firmware upgrade over the antenna cable (don't remember if it was cable TV or satellite). She certainly didn't have any internet
50.
by ranma42 6y ago
> USB Audio device class and a USB stack. That's a hell of a lot of code. Its actually not that much for the bare minimum needed, though the USB docs are pretty daunting. If you go with USB1, you basically just need enough to answer
51.
by ranma42 6y ago
I'm at 47°N and anecdotally, I did ~30-40 minutes walks in the midday sun this summer, with either face/hands/arms or additionally also legs exposed. At the end of summer I measured at 26mcg/l, which is barely above the
52.
by ranma42 6y ago
I tried the K&F Concept lens adapter, but the big caveat is the sensor size difference, so effectively you get a huge zoom factor. Using the Kit lens from my Canon, I either need to put the camera module meters away from my face or meet
53.
by ranma42 6y ago
> In hindsight, how would you have used the documentation of the Raspberry Pi architecture to determine whether UASP is supported? Doesn't really depend on the Pi hardware at all, it depends on the kernel driver (kernel must be new
54.
Trying out AMD DASH remote access on a Thinkpad T14s(old.reddit.com)
2 points by ranma42 6y ago|0 comments
55.
by ranma42 6y ago
"in deep sleep mode, ESP32’s current consumption is almost 150 uA" Assuming a 3V power supply is needed, at 100uW, you only get ~30uA, so no. However the "Hibernation" mode would work (however, this looses memory state):
56.
by ranma42 6y ago
There's even snacks that are just the fried fish bones. http://seriouseats.com/2011/03/the-nasty-bits-fried-fish-bon...
57.
by ranma42 6y ago
Given that ~1 hour of video is uploaded to youtube per second and assuming 5mbit/s for the video data, then you can store under a days worth of youtube videos on that current-day ice cube (it will be full in about ~15 hours worth of up
58.
by ranma42 6y ago
My G3X uses an IMX183 according to a string in the firmware image.
59.
by ranma42 7y ago
This is also possible with NTFS+ext[2,3,4]. I did work on modifying mkfs.ntfs do create a polyglot filesystem like this, but ran into issues that the windows filesystem check was not happy with the result (though it was mountable as either
60.
by ranma42 7y ago
Old D-Link DGS-1008D switches with Vitesse chipsets also have a built-in 8051 for firmware (but only 8KB SPI flash loaded into 8KB of embedded RAM, so pretty useless). I think it's mostly used for the cable test when powering on the sw

More ›