The Cryptocurrency Bandwagon

The spread of cryptocurrencies contributed to the development of many solutions based on a distributed ledger technology (blockchain). Although the scope of these solutions varies, most of them have the same basic set of security services, i.e. confidentiality, authenticity, and integrity. These features are granted by the practical applications of public key cryptography, in particular,  digital signature (DS). But unlike many other applications of public key cryptography, cryptocurrency networks do not use public key certificates. This is the aspect that we would like to talk about.

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The Cryptocurrency Bandwagon
Source: geektimes

Monocrystalline solar cell simulation

In the green energy field, the solar panels composed of bendable solar cells tend to significantly increase in popularity last time. The difficulty during the designing of the different devices (such as solar chargers, MPPT-controllers) emerges because of the strong lack of technical information about this kind of solar cell.  

In this article, the equivalent scheme of the bendable solar produced by the Sunpower company — Maxeon gen 5 and its coarse simulation model is proposed.

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Monocrystalline solar cell simulation
Source: geektimes

Music on the Commodore PET and the Faulty Robots

After completion of the System Beeps, I wasn’t planning to make another stand alone album release with the pseudo polyphonic music, as I felt the topic had been explored enough. This, however, wouldn’t mean I couldn’t apply the experience and skills gained to make more utilitarian stuff, like an actual retro game OST or an old school demoscene project. Such an opportunity arose in Autumn 2020, as David Murray of The 8-bit Guy Youtube channel fame announced his new game to be in development, the Attack of The PETSCII Robots for Commodore PET and some other Commodore 8-bitters. As I previously worked with David on his previous big release, Planet X3 game for MS-DOS, and this was a perfect opportunity to satisfy my interest towards the pre-graphics era PCs as well as apply my vast experience both in the minimalistic computer music and 6502 assembly programming, I offered my services that had been accepted. Besides the sound code I also had hopes to participate as a music composer this time.

Unfortunately, this time the project didn’t went well on my side, and lots of issues of all kinds eventually turned it into a small scale development hell (you can learn more from a series of posts at my Patreon blog)  The end result was that my code and sound effects were only used in the VIC-20 port, and music for other versions has been created by other people. However, I was left with the full working code of the sound system for PET, and a number of music sketches. It would be a pity to file it into the archive, PET projects aren’t a frequent thing these days, so another chance to use the stuff wouldn’t come any time soon. So I got the idea to develop my music sketches into full songs, and release it as an alternative OST, and having David’s approval it has been done and released in the Winter 2021 as Faulty Robots, a small music album for PET that is available as a digital audio release and a runnable program for the actual PET computer.

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Music on the Commodore PET and the Faulty Robots
Source: geektimes

How to Build a Cryptocurrency Exchange App in 2022

Do you plan to start a cryptocurrency exchange business? If so, now is the perfect time. The easiest and safest way to make money from cryptocurrencies is to create a crypto-exchange application. Regardless of whether traders and investors make or lose money, the cryptocurrency exchange will remain a winner in any case.

But, how to open a cryptocurrency exchange app? So, let’s look at the main stages of the process.

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How to Build a Cryptocurrency Exchange App in 2022
Source: geektimes

“FPGA InsideOut” – animation about CRC and parallel CRC calculation

Ссылка на русскую версию / link to Russian version

FPGA InsideOut is an attempt to make a set of educational FPGA videos presented in the “human-in-the-loop” style. In these videos we will not only show how we are interfacing with an actual FPGA board but will also provide synchronous real-time visualisation of FPGA’s internal logic.

For our first video we have picked a CRC circuit (cycle redundancy check) which is based on a linear feedback shift register. This circuit goes through several transformations during the course of the video. Intrigued? — let’s watch the video.

Watch the video and continue reading
“FPGA InsideOut” – animation about CRC and parallel CRC calculation
Source: geektimes

A new writing method/technology (“dendrowriting”), as exemplified by the YearVer site

Several years have passed since the appearance of the first text markup language that supports “dendrowriting”, but no worthwhile piece of text demonstrating the advantages of the new writing method/technology has yet appeared.

The largest “dendrotext” was a couple of paragraphs in the pqmarkup documentation, consisting of only ~1300 characters and available only in Russian.

In English there was no “dendrotext” at all, as such [apart from small insertions in the documentation for the 11l programming language (e.g., ‘Boolean type’ in Built-in types)].

But last year…
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A new writing method/technology (“dendrowriting”), as exemplified by the YearVer site
Source: geektimes