jws

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271.
by jws 6y ago
I use the RMT (Remote Control) devices of the ESP32 from FreeRTOS for this. They were intended for generating on-off-keying of carrier modulated wave forms to blink an IR LED for a remote control. If you leave off the carrier modulation you
272.
by jws 6y ago
Two days in. The package is useful and mostly complete. See https://github.com/jimstudt/SSHConsole if you have needs, or just want to see another example of using NIOSS on the server. This one includes the public key a
273.
by jws 6y ago
For anyone following in these footsteps: It works well. I spent more time fighting Swift Argument Parser than the NIOSSH. Fundamentally, there is not a way to pass context down to a command that is run. Fine when you are a whole program rea
274.
by jws 6y ago
This sounds like a great addition for servers written in Swift. Pair it with the very easy to use and clean command line arguments package and it should be "trivial" to add management/diagnostic console full of commands to yo
275.
by jws 6y ago
Just something that needs to be said from time to time… If you are interested in accurate analog to digital converters (which you are, since you went to get a 16 converter instead of the 10 bit ones already included), and there is any pos
276.
by jws 6y ago
People have pondered cooling Yellowstone's magma chamber by surrounding it with geothermal wells.† The result would be 5GW (for comparison that is 1/6th of California's needs) of clean energy at about $0.10/kWH for thous
277.
by jws 6y ago
- You might switch between several computers throughout the day. - You might believe the cloud folks do better backups than you.
278.
by jws 6y ago
The iPhone 5 does not do battery performance management. If your phone has gone into performance management (to prevent crashing) you will see it in your Battery Health "Settings" panel. You can disable it there as well if you wou
279.
by jws 6y ago
Their Wifi testing methodology is useless, other than to say it didn't completely break the Wifi. A better test would be to see how far you can get from the access point before degradation of bandwidth kicks in with and without the cas
280.
by jws 6y ago
Years ago my daughter read about eating acorns. We saved a bunch, went through the leaching process, ground them to flour and had pancakes. Blech. It still goes on my “last resort” list.
281.
by jws 6y ago
A rough rule of thumb is 20 bytes of object for 1 line of C.[1] So if you have a 5MB kernel you might have 250k source lines of code. That said, the Linux kernel is not typical code. Great swaths of it are architectures and devices you will
282.
by jws 6y ago
That takes care of half of the problem. You will be a complete hero if you write up how to do "blind signal separation" with an economical microphone array. Such a device can be ceiling mounted and use copious heaps of mathematics
283.
by jws 6y ago
The car makers knew the liabilities of using ammonium nitrate as an airbag propellant. It was just cheaper. It's not like Takata swapped from a stable propellant to one which could be stable if everything was done just right on their o
284.
by jws 6y ago
What's the durability? PVA seems to be very water-soluble In section 4 "Experimental Section", which is oddly behind section 3 "Conclusions", you will find that unless protected by a layer of paint, the material i
285.
by jws 6y ago
The R0 is an average across many behavior profiles. These individuals engaged in exceptionally dangerous behavior and are the part of the samples that are above the mean.
286.
by jws 6y ago
US federal tax dollars no longer fund a significant portion of public broadcasting. Only about 1/7th is federally funded.
287.
by jws 6y ago
1 - thanks, fixed. 2 - the lower court appears to have used the back half of the sentence as describing the components of the first half. Given the supremes’ reading, the back half doesn’t need to even be there, though I guess if you can co
288.
by jws 6y ago
Always amazing to see how things are decided by tiny reading of the English language. The law states… Hours worked’ means the time during which an employee is subject to the control of an employer, and includes all the time the employee is
289.
by jws 6y ago
The ratio of red and blue light controls various functions of a plant. In the context of aquarium plants, more red light makes them get tall and leggy, more blue light makes them be compact and bushy. https://gpnmag.com/arti
290.
by jws 6y ago
DPS Electronics Inc. | Firmware Engineer | onsite initially, then negotiable DPS Electronics Inc. designs and manufactures electronics for the railway industry. DPS specializes in advanced solutions for End of Train/Head of Train telem
291.
by jws 6y ago
A decimal digit is encoded in 4 bits as its usual encoding plus 3. Thus 0 is 0011 and 5 is 1000. Some nice things which happen are… - the carry bit out of your 4 bit adder is the carry bit from the decimal add. (Your two digits plus their t
292.
by jws 6y ago
I did some proof-of-concepts ages ago (October 2010) exploring different ways of embedding a PNG alpha channel in JPEG application specific fields to have 100% JPEG compliant files which web browsers could display with transparency. It work
293.
by jws 6y ago
It kills every application whose developer doesn't issue an update in the next 12 months. If you buy an ARM based Mac and your favorite app doesn't work it was abandoned by the developer. As a developer there is a nuisance of one
294.
by jws 6y ago
For those getting lost in steam era torpedos, you might also enjoy the earlier Brennan Torpedo. It was propelled and steered by hauling fine wires out of its stern with a land based steam engine. https://youtu.be/XeyJbgrE8oc
295.
by jws 6y ago
In over 40 years of computing I've never heard the backslash called anything else… until today when you made me look into it. Apparently Unicode has renamed it be "REVERSE SOLIDUS" while still tolerating "BACKSLASH"
296.
by jws 6y ago
Sun light is about 1kW/square meter. A 737 has a wing area of 125 square meters. To deliver 7.5MW to those wings will need 60kW/square meter. That's a far greater energy density. As for "time in beam" of a moving be
297.
by jws 6y ago
Aluminum is 1000 times more abundant in seawater than (edit)uranium. Lithium is about 60 times as abundant. With uranium at $32/lb, aluminum at $0.75/lb and lithium at $6/lb it seems that aluminum and lithium would reach comm
298.
by jws 6y ago
Read the spec, but in a nutshell you only report your tokens if you test positive. Then other people check to see if they have seen any reported tokens using a clever algorithm that doesn't involve them reporting all the tokens they ha
299.
by jws 6y ago
It wasn't sudden, and was already in progress by 1904, but St. Louis in the 1850s was the second largest port in the United States after New York. As railroads became a thing they favored Chicago, possibly because St. Louis politicians
300.
by jws 6y ago
That is to save 146KB on one image an 99KB on another, to save 2 seconds you'd have to using a 1mbps connection. The first random internet article I pulled for real world cellular speeds suggests even unwired, people are getting 30mbps

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