morcheeba

4 ms·

1.
by morcheeba 1y ago
AC is only popular because it works with transformers to step up/down the voltage, and it would be more expensive to step up/down a DC signal using electronics (which usually involves converting to AC internally anyway). AC Voltag
2.
by morcheeba 2y ago
Ah, that explains why there is so much electronics in the cartridge! It seemed a bit like overkill, but returning the cartridge will get them their data.
3.
by morcheeba 2y ago
>lower the respin costs You might be interested in structured ASICs, which allow for substantial reuse of masks between different products. At the extreme was a via-only definition product where all interconnects were specified with one
4.
by morcheeba 2y ago
Not OP, but I looked in to this a few years ago. It was more expensive then, and only went to 20 kHz. Higher frequencies are helpful if you're listening for the hiss of leaking gas, or corona discharge of an electric arc. The Orin h
5.
by morcheeba 2y ago
The testing for aerospace is extremely rigorous ... For DO-178C level A (Catastrophic failure that can cause a crash or many fatal injuries) we're estimating 2 years to do MC/DC test coverage metric of a fairly basic software syst
6.
by morcheeba 2y ago
+1 for RTEMS, another happy user!
7.
by morcheeba 2y ago
Originally it was because iMessages were free, while SMS were $0.15-$0.20 each. So glad Apple broke that monopoly, along with many other anti-consumer wireless provider restrictions.
8.
by morcheeba 2y ago
Shmoocon had it right providing Shmoo balls.
9.
by morcheeba 2y ago
hexdump will automatically does "squeezing" of repeated lines. Follow this with a line count and multiply by the bytes/line and you'll get a rough number of non-repetitive bytes. https://man7.org/linux&#
10.
by morcheeba 2y ago
Two issues to consider: - GPS positioning is more accurate if the satellites it sees come from a variety of angles (GDOP), so the satellites near the horizon are valuable. - Aircraft pitch and roll, so a fixed antenna like this would lose p
11.
by morcheeba 3y ago
>the console manufacturer is actually adding significant value and taking a fair (or not so fair) margin in exchage. I don't get this. What does a game console manufacturer do that Apple does not? Both provide hardware, system-lev
12.
by morcheeba 3y ago
That's essentially what he's doing. The patch antenna he's using have a null at the horizon, where ground-based jammers would be.
13.
by morcheeba 3y ago
The AVP isn't sold in the EU yet.
14.
by morcheeba 3y ago
Yep. The 65C02 has a SYNC output that goes high to indicate an instruction is being fetched on the current cycle. Since there is no cache, it's pretty simple to use this to determine the PC.
15.
by morcheeba 3y ago
Related question: I've seen news reports that the plane had experienced three recent pressurization issues (cabin pressure warnings). Does anyone know what kind of warning this was? Was it: - too low pressure, meaning that the door
16.
by morcheeba 3y ago
Is it the same as this video? https://vimeo.com/853557623
17.
The Sensor of the 'Big-Sky' Camera(ymcinema.com)
1 points by morcheeba 3y ago|1 comments
18.
by morcheeba 3y ago
This is the sensor for the custom camera used to film content for The Sphere - a 316MP sensor capable of shooting HDR at 120FPS. The single CMOS chip is about the size of a 3.5" floppy. Technical paper at https://www.mdpi.
19.
by morcheeba 3y ago
That was my first thought, too. My ideas was to make the plastic UV-curable so it would become rigid and not require inflation. I looked it up, and that's what they're doing - UV-curable ribs. It's also not a sphere; it h
20.
by morcheeba 3y ago
There was a company that did this circa 2003 - SMaL. Their "autobrite" sensor is built to capture log-scale natively. They've switched owners twice since then, but it seems like they're getting more traction in car vis
21.
by morcheeba 3y ago
That's really interesting. Chirality is one of the six indicators[1] we'll use to detect life on Titan when we land there in 2034. But Titan doesn't have its own magnetosphere; there is one from Saturn that shields the moon
22.
by morcheeba 3y ago
SPARC is still alive, thanks to its open licensing & established toolchain, for the niche rad-hard space market: https://en.wikipedia.org/wiki/LEON#LEON3FT_processor_core Although the company is moving to RISC-V fo
23.
by morcheeba 3y ago
>How do we even know the money will be put to good use? The IBWC is its own thing, directly run under the State Department, with its own engineering staff and field offices. When we give similar water/sanitation aid to other countri
24.
by morcheeba 3y ago
Good explanation! For completeness: In an Ion jet, the energy comes from (usually) solar power and the gaseous fuel provides the bulk. These are even weaker because of the limited instantaneous power that can be generated to feed it, but t
25.
by morcheeba 3y ago
Favorite Dale story: I had a booth at the first Maker Faire. As things were closing down on the last night, I was waiting at the front gate for a taxi back to the hotel. Dale saw me, and with no idea of if I was a presenter or an attende
26.
by morcheeba 3y ago
For a typical 70AHr car battery, the 1 mA from this monitor will take 8 years to drain the battery. When you get a "25% remaining" alert, you only have 2 years to recharge it! No, seriously, the self-discharge is about an order
27.
by morcheeba 3y ago
But we're talking about UC Berkley here - how image-conscious could they be after they hired John Yoo, the Torture Memo guy?
28.
by morcheeba 3y ago
If the spectrum of the LEDs match the sensitivities of the eyes, then everything is fine. But LEDs are narrow spectrum; they won't reproduce color the same way as a broad spectrum light source will. As for LED screens, those are emiss
29.
by morcheeba 3y ago
Me, too. My two HP48s are finally starting to fail after 30 years of use.
30.
by morcheeba 3y ago
You can probably replace this with a threaded IR cut filter that screws on to your lens.

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