Viewing profile — lpmay
lpmay
HN member- Joined
- Wed, Aug 28, 2013, 3:12 AM UTC
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- 233
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- 55 items
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About lpmay
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Recent public activity
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Comment #40411292
I would never have guessed this configuration was so rare. D-sub connectors seem to have more active use in aerospace and defense that you might expect (Until I started working pro…
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Comment #39610438
yes sorry, pitch is smaller density is higher
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Comment #39610249
The important distinction is between on-silicon interconnects and off-silicon. On silicon, the interconnect density is much higher so it's feasible to get high bandwidth by having …
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Comment #30940025
The "PIC32" family from microchip is also MIPS based
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Comment #30583095
No problem! You are not the first person I've heard express the impression that the MSP430 is slipping into irrelevance, and while I agree the places it shines may be getting squee…
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Comment #30580196
I think the platform is very much still alive and kicking. It is still the only uP platform I am aware of which is available with embedded FRAM which is low power, non volatile, ex…
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Comment #30577332
It's up to hobbyists what's worth it to them, but the power consumption of the ESP 8266/32 is not _really_ comparable to the '430. "Deep sleep" mode on the ESP seems to be about 20…
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Comment #28994758
Don't know if their copy editors read these, but "Gallium Nitrate" is surely a typo for "Gallium Nitride" (GaN). GaN is a wide bandgap semiconductor, Gallium Nitrate is apparently …
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Comment #27656343
It's because the speed of sound (in any material) is much slower than the speed of light (even in high dk materials). To make a selective and low loss filter you want to use resona…
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Comment #27376613
Just a hint - extra attributes in the `mkShell` appear as environment variables in the built shell. So instead of a `shellHook` for this you can just have an attribute `ERL_LIBS=""…
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Comment #25224873
Also see meson's[0] built in package management called wrap-db[1] [0] https://mesonbuild.com/ [1] https://wrapdb.mesonbuild.com/
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Comment #23560792
Down to DC? That should be a surprise, because it's certainly not true! Faraday's law of induction only applies to varying fields, which means AC or physical movement. Remember, it…
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Comment #21986902
What is "OBD-C"? Did the appropriate the USB-C connector for an OBD connection for some reason?
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Comment #21092838
No, the power consumed is equal. The capacitance doesn't stop charging at time tao as you imply, it continues to charge until it reaches the final driving voltage, which is why int…
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Comment #21092816
No, the power consumed is equal. The capacitance doesn't stop charging at time tao as you imply, it continues to charge until it reaches the final driving voltage, which is why int…
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Comment #20591390
Yes, but I don't think your refuted my point. 16 bits (96dB SNR) is pretty good for an 18MHz signal processing system. Comparing it to a 18MHz 8bit AVR with a 10bit, 15ksps ADC is …
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Comment #20581351
Sure, but analog processing happens continuously and at an SNR that is equivalent to a very high bit depth. If you had an analog processing chain with 18MHz of BW (which granted yo…
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Comment #19182712
The Waytools text blade sounds somewhat similar to what you're describing: https://waytools.com/
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Comment #18986979
I love this article, but I just can't help but pick at this nit I have with the "charging the capacitors" part. I'm not intimately familiar with Ethernet specifically, but I am an …
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Comment #18306720
Nice. Do you have any guides you wrote or used that you can recommend? I'm looking at getting SmartOS set up at home as well, but I know I've got a lot to learn.
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Comment #17882248
Maybe even hotter than inside, since the epoxy reaction is exothermic as it cures.
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Comment #17398173
Another cool thing, that was counter intuitive to me is that more than just rejecting multipath, spread spectrum can actually make use of multipath to improve the link (although I …
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Comment #17384399
Also, the input stage is where noise figure is critical. Larger transistors are lower noise figure.