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61.
Autonomous drone defeats human champions in racing first(tudelft.nl)
355 points by picture 1y ago|328 comments
62.
Types of optical systems in a lens designer's toolbox (2020)(pencilofrays.com)
83 points by picture 1y ago|14 comments
63.
by picture 1y ago
Integrating over a longer time to get more accurate light measurements of the a scene has been a principal feature of photography. You need to slow down the shutter and open up the aperture in dark conditions. Combining multiple exposures i
64.
Autonomous drone defeats human champions in racing first(tudelft.nl)
2 points by picture 1y ago|0 comments
65.
Types of optical systems in a lens designer's toolbox (2020)(pencilofrays.com)
1 points by picture 1y ago|0 comments
66.
by picture 2y ago
We've been in the age of direct RF for a while. The new cellular base stations that Nokia makes are literally eight RFSoC chips connected to 64 power amplifiers. You can get one for yourself for pretty cheap: https://www.rea
67.
by picture 2y ago
The reference signal generated by Si5351A is used to clock two flip flops which I believe are used to generate a 90° quadrature local oscillator (LO) which enters a dual 1-4 multiplexer acting as a Tayloe quadrature mixer. And as you know,
68.
by picture 2y ago
"Union" is another good example
69.
by picture 2y ago
It's not hard at all to get good uA/MHz numbers, it just increases die size and cost. You can push it pretty far by tuning the synthesis, for example the same Cortex-M4 core on the Ambiq Apollo3 Blue advertises "6 μA/MHz
70.
Tiny Emulators(floooh.github.io)
3 points by picture 2y ago|0 comments
71.
Homemade polarimetric synthetic aperture radar drone(hforsten.com)
616 points by picture 2y ago|60 comments
72.
by picture 2y ago
I'm wondering if we looked at the same document... there is no FPGA and it is PIC32MK0512GPK064 instead of STM32. It's also 12 bits at nowhere near 100 Msps, being only 18 Msps. Did you use the aid from AI to write the comment, or
73.
by picture 2y ago
Consumer image/video processing is one of the few applications where requirements of low cost, high performance, and tolerance of poor software support and low reliability converge. It makes a lot of sense that StarFive would target th
74.
by picture 2y ago
Seconding this. I found out that I get mini-nightmares and get woken up if I try to sleep immediately after a hot shower, so I switched to morning showers. This also helps me set a hard wake up time since the shower gets me awake
75.
by picture 2y ago
What does POSSE stand for?
76.
by picture 2y ago
I think your sentiment encapsulates the hypocrisy of modern people where the systems have developed over thousands of years to further and further insulate us from all the less pretty aspects of life, to a point where we largely forget the
77.
by picture 2y ago
Sorry just saw this. I don't make "conventional" SoMs, but I could help you with some information. What sort of quantity are you looking for?
78.
by picture 2y ago
Usually the value isn't a big deal for "power rails" which expect to have additional capacitors connected elsewhere. However, sometimes microcontrollers expose decoupling pins for use with internal voltage converters and regu
79.
by picture 2y ago
Most of the advanced chips (the 16 nm that Xilinx uses for UltraScale/+ and below) are flip-chip wafers and have an interposer which is basically a very dense PCB that helps fanning out the extremely dense and small pitch of flip-chip
80.
by picture 2y ago
The title was edited by supposedly HN moderators after I posted it. I actually ran into this youtube channel and thought it was very interesting, since I didn't realize academia seems to make so many mistakes all the time. https:&#x2F
81.
Comment on 2015 mRNA paper suggests data re-used in different contexts(pubpeer.com)
159 points by picture 2y ago|81 comments
82.
Gate-level simulation of ASIC in browser(znah.net)
221 points by picture 2y ago|31 comments
83.
by picture 2y ago
I just saw the two comments in question and find it to be absolutely hilarious. A serious answer to your question - no, these are in the "whoop" weight-class. Warhead carrying drones for anti-personnel and anti-armor are usually 1
84.
PA3FWM's Software Defined Radio(pa3fwm.nl)
4 points by picture 2y ago|0 comments
85.
by picture 2y ago
Where did you get the number of 4x from? It seems different than what I understand, but I don't have any sources handy. "Modern electronics are more fragile" issue really is not overblown. One of my peers have tested differen
86.
by picture 2y ago
But this is about the overall engineering of Voyager, not just the programming. Also, I'm skeptical how much better modern hardware will fare in deep space conditions, considering the use of finer and more fragile electronics. Since yo
87.
by picture 2y ago
Are any facts knowable? Besides the fact that something exists, in some shape or form, at this particular moment, that allows the thought about this to happen.
88.
by picture 2y ago
?? Some people do agree that the Electoral College system was more suited for a previous time where the States were more disjointed and the federal government wanted to entice each state to participate in the system by giving the smaller st
89.
Project IMU Array(willwhang.dev)
3 points by picture 2y ago|0 comments
90.
by picture 2y ago
Agreed. Super pedantic comment: it's Battle off Samar.

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