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zaxomi

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There are better separators included in ASCII, but not used as often: 28 File Separator, 29 Group Separator, 30 Record Separator and 31 Unit Separator.

Das Blinkenlights 2 years ago

I'm planning to do something similar, but using addressable RGB LEDs (like WS2811, also known as neopixel).

They are simple to work with. Each LED has 4 connections: GND, +5V, DATA IN and DATA OUT. Each LED grabs the first 24 bits of the data stream (8 bits for Red, Green and Blue) and sends the rest on DATA OUT for the next LED.

The phantom power at 48 volts used with XLR connectors only have a current at about 10 milliampere. Enough to supply power to a little microphone.

The connector is bulky and of metal, and designed to be used inside. It's also expensive compared to other connectors. There are a lot of cheaper, more suitable connectors, designed to carry power.

Depending on the country you live in, the laws might allow you to do work on equipment that is below 50 volts, but require you to be a certified electrician for anything above that.

JSON Patch 2 years ago

appending things to arrays etc can't be done elegantly

Are you referring to the possibility to point to the end of the array? If so, a single minus sign might solve it: "/path/to/the/array/-"

RFC 6901 JavaScript Object Notation (JSON) Pointer > exactly the single character "-", making the new referenced value the (nonexistent) member after the last array element

All vehicles that can be steered have that possibility, even cars: If there is a steering wheel, it is possible to deliberately crash the vehicle. If it is possible to shut down engines, it can also be used for malicious purposes. In other words, there is always the possibility of using everything for malicious purposes.

On the other hand, the ability to shut down a system that has failed can save everyone on board.

There are approximately 40,000,000 flights each year. Almost all occur without incident. In the entire 120-year history of aviation, only a few accidents have resulted from the pilot intentionally crashing the plane.

Remember that ASCII is short for "American Standard Code for Information Interchange".

base64 was proposed in 1987 to work with ASCII, EBCDIC, and other character encodings.

60 kHz (2022) 2 years ago

And before radio, between 1880-1927, time was pumped throughout Paris in the form of compressed air using a network of pneumatic tubes.

The first floppy from 1967 only had one side. Adding one signal to select side was an easy solution to increase the capacity without to much modification of the controller. Adding the capability to read from both heads at the same time would require much more modifications, and more memory.

Coordinating Committee for Multilateral Export Controls (COCOM) limits is 1,000 knots (510 m/s) and/or at an altitude higher than 18,000 m (59,000 feet).

Commercial airliners usually have a service ceiling at about 40000 feet and a speed below the speed of sound (343 m/s). Even with a very strong jet stream of 100 m/s it's below the limit.

The Concorde had a service ceiling of 60000 feet and maximum speed of 605 m/s.

Use Timestamps 3 years ago

There is more than one WordPress theme that shows the time of day,month and day of month, but not the year.

It's getting the favicon, and while doing so gives information about the client in the user-agent and the IP-address.

How is this different from any other request to a website?

Some of the things I use in vim:

* Mark a position in the file, so I easily can jump back.

* Quick recording of a macro that to do the same type of edit multiple times (very handy when refactoring)

* regular expression search and replace, very easy to limit the scope.

* Easy to select, copy and paste lines or columns.

Everything without touching a mouse.