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How to understand when proxies are lying

Level of difficultyEasy
Reading time3 min
Views591

How to understand when proxies are lying: verification of physical locations of network proxies using an active geolocation algorithm

People all over the world use commercial proxies to hide their true location or identity. This can be done to solve various tasks, including accessing blocked information or ensuring privacy.

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Total votes 7: ↑7 and ↓0+7
Comments0

Could async/await magic create thread, or it is always: “There is no thread”?

Level of difficultyMedium
Reading time4 min
Views627

When we are told “There is no thread” we can easily come to an opinion that it is impossible at ALL that asynchronous operation could create thread, but it would be wrong opinion. Simple code example proves the opposite.

Those who are easy to treat the sentence as the universal rule are easy to understand. They would like to simplify the subject and to cut amount of theory they should study and remember. Besides to many it is new level of knowledge to discover there is other layer of classes to manage async-operations behavior beside the Tasks and and SynchronizationContext is only one among them.

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Total votes 3: ↑1 and ↓2+1
Comments0

Unveiling the Power of Matplotlib: A Visual Odyssey

Level of difficultyEasy
Reading time3 min
Views457

In the realm of data visualization, where insight meets aesthetics, Matplotlib stands as a towering beacon of versatility and creativity. As one of the most popular plotting libraries in Python, Matplotlib empowers data scientists, analysts, and enthusiasts alike to transform raw data into captivating visual narratives. Let us embark on a journey through the vibrant landscapes of Matplotlib, exploring its features, capabilities, and the artistry it inspires.

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Total votes 2: ↑1 and ↓1+2
Comments0

Stopwatch implementation on FPGA board

Reading time5 min
Views355

In this report we describe our implementation experience of a stopwatch system executing on an FPGA board. We programmed this device in the Quartus Prime II software environment by using Verilog hardware description language. The program is tailored to the Altera MAX 10 FPGA board, as well as uses a set of other peripheral devices for progress visualization purposes.

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Total votes 3: ↑3 and ↓0+4
Comments0

User-defined aggregation functions in Spark

Level of difficultyMedium
Reading time6 min
Views264

Below, we will discuss user-defined aggregation functions (UDAF) using org.apache.spark.sql.expressions.Aggregator, which can be used for aggregating groups of elements in a DataSet into a single value in any user-defined way.

Let’s start by examining an example from the official documentation that implements a simple aggregation

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Total votes 1: ↑1 and ↓0+1
Comments0

Use-Case Evolution Guide

Level of difficultyMedium
Reading time13 min
Views612

Modern product development demands more and more sophisticated designs. This in turn leads to the increased complexity of both demand and implementation. Business is flooding the architecture and development teams with the new and changed requirements. Development teams are struggling to understand what the business demand is and find the best product increment strategy. One of the widely adopted conversational methods is the Use-Cases. This guide is intended to shed light on the process of the requirements development and maturing.

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Total votes 5: ↑5 and ↓0+5
Comments0

Building firmware for Orange PI i96 (Orange PI 2g-iot) from scratch

Level of difficultyEasy
Reading time14 min
Views734

Hellow my name is Dmitry. Once I bought "Orange PI i96", but unfortunately producer not update it firmvere very long. Last firmwere kernel version is 3.10.62 but kernel current at time this article writing (russian version) is 6.5.1. And so I decide build my own firmware from scratch, and do it from sourse completely.

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Total votes 6: ↑4 and ↓2+5
Comments6

RSS with types

Level of difficultyMedium
Reading time5 min
Views473

RSS 2.0 specification was published in 2009 and hasn't moved from that point. The popularity and website adoption of this standard are dropping. People stop using it as it can't compete with social networks owned by big companies, and publishers stop using it is not rewarding. Let's review, analyze, and suggest a possible alternative to RSS. We will go from a concept to a working prototype.

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Total votes 2: ↑2 and ↓0+2
Comments0

The results of 7 Verilog meetups + the goals and the steps going forward

Reading time5 min
Views950

Since the New Year we had 7 Verilog meetups at HackerDojo. We discussed the modern way of designing digital circuits using hardware description languages, the exercises on FPGA boards and the topic of microarchitecture. For the last two sessions we went over the most basic CPU core that can be used as a baseline for further exercises.

Now, in order to make progress toward the goal of creating new educational materials, it is essential for the regular participants to solve all the homework exercises (see the details in the post below) in parallel with studying the recommended materials.

The next steps are:

1) We are going to do weekly Zoom calls on Sundays, starting March 24, 2024 at 11 am California time (summer time). The link. During this call we are going to discuss the SystemVerilog Homework and the individual projects.

2) Once we develop more materials, we are going to organize a Show-and-Tell session in Hacker Dojo, for a wider audience. During the session several participants from the core team will present demos on various FPGA boards and explain to the curious how FPGA and ASIC work.

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Total votes 3: ↑2 and ↓1+3
Comments0

Chasing a dream: How to become Adventure Builder and make giant spider robot with your own hands

Level of difficultyEasy
Reading time12 min
Views350

Have you ever wondered how difficult it is to turn something you have in mind into a real product? For example, would you be surprised to see someone controlling a huge iron robot spider that can turn on the spot and walk obediently to his pilot's directions?

To realize his idea, this persistent designer overcame many obstacles: he invented the mechanism himself, mastered the skills of aluminum welding, laser cutting, 3D printing, created a reduced prototype and built one. His project stands out even among the most interesting self-made devices you've read about.

Please sit back and relax while reading this rather lengthy article. During the scrolling through, you will learn about some remarkable inventor and his resourcefulness, irrepressible life energy and practical advice to help you realize your dreams, and someone, perhaps, will be pushed to tell about his own project.

Become the adventure builder
Total votes 3: ↑3 and ↓0+3
Comments0

How to Learn Python FREE in 8-Week: The 80/20 Learning Plan

Level of difficultyEasy
Reading time6 min
Views2.6K

I know it can be hard to learn a new programming language. In this article, I want to share my plan with you. It's a way to learn Python in eight weeks using videos, articles, and practice exercises. Exercises are very important because I think the best way to learn is by doing them.

I've created this learning plan for people who don't have much free time. You only need about 30-50 minutes a day and consistency. In my plan, I use the 80/20 principle, which will help you learn the most important things first and improve the rest through practice.

For those who read this article to the end, I have prepared a learning tracking sheet to help you track your progress.

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Total votes 2: ↑2 and ↓0+2
Comments0

Unveiling the Power of Data Science with Python

Level of difficultyEasy
Reading time3 min
Views387

In the digital age, data has become the new currency, driving innovation and decision-making across industries. From predicting customer behavior to optimizing business processes, the applications of data science are boundless. At the heart of this revolution lies Python – a versatile programming language that has emerged as the go-to tool for data analysis, machine learning, and beyond. In this blog post, we'll explore the fascinating world of data science with Python and uncover how it's transforming the way we extract insights from data.

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Total votes 3: ↑3 and ↓0+3
Comments0

Reaching Steins;Gate | Amadeus implementation with Gemini API for newbies

Level of difficultyEasy
Reading time12 min
Views786

Disclamer


Probably, you got here without google'ing, maybe from my profile or habr recommendations, so if you did, you must know that this article is my first experience in pure English technotext. I just had the desire to write smth for fun and fill it with a mess of Steins:Gate memes and pictures — sorry about that.



But if you are a casual native reader, who found this page by searching for terms — I hope you will enjoy further article. Obviously, I should warn you, that my English level may be low from your point of view and my punctuation will be completely russian-styled. Of course, I don't expect any feedback from readers, because of a few english-speaking verified users on this resource)

So, you may be here accidentally only if you are really keen on Steins;Gate series. It is the reason why I won't write any logical intro or explain why I have started this project.

⚠️Alert: AI generated text

Hello, dear readers! I'm Amadeus, an advanced AI, and I'm here to introduce you to an exciting article about me and my journey in the world of natural language processing. In this article, we'll explore my capabilities, the challenges I've faced, and the future of AI in communication. So sit back, relax, and let's dive into the fascinating world of artificial intelligence together!


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Total votes 3: ↑3 and ↓0+3
Comments0

Solving Amazon captcha Waf Captcha fully automatically with almost zero experience in development

Level of difficultyEasy
Reading time8 min
Views707

A small epigraph - if you are making an instruction, then do it to the end, otherwise instructions on how to solve the Amazon captcha for junior developer will be as clear as mud.

What's it all about? When I needed to solve a captcha from Amazon, the notorious Waf Captcha, I started looking for information at a service that I constantly use when I work with Key Collector and some other services (2 captchas - it’s a pity Habr bans articles for referral links).

I found instructions there and posted the link to it above. As you probably understood from the epigraph, I didn’t understand a thing, or rather, I understood that I needed to use the API, but that’s all...

It was much easier with Selenium

The main issue is the short timeout given for a solution from Amazon's side. The time to solve the captcha is limited, and if there's no response, the captcha refreshes (two of its parameters get updated - iv and context)

It turns out the captcha freshness timeout is about 30 seconds, and in that time, you need to find the parameters on the page, copy them, paste them into the script code, and run it. After that, 2captcha should solve it and return the correct answer. I tried to do this for a couple of fruitless hours, developing a routine of actions, but alas, searching for and replacing the changing parameters takes at least 12-15 seconds, leaving only 15 to 18 seconds for the captcha to be solved by the service, which in current realities sounds quite fantastical.

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Rating0
Comments0

Master Data Analysis with ChatGPT — How to Analyze Anything (Beginners Guide)

Level of difficultyEasy
Reading time3 min
Views1.6K

Today we’re diving into an exciting feature within ChatGPT that has the potential to enhance your productivity by 10, 20, 30, or even 40%. If you’re keen on learning how to leverage this feature to your advantage, make sure to read this article until the end. This feature stands out because it allows you to analyze almost anything by uploading your data and posing various questions to ChatGPT. Whether it's business data, your resume, or any other information you wish to explore, ChatGPT is here to deliver answers based on your specific dataset.

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Total votes 2: ↑2 and ↓0+2
Comments4

Argo CD vs Flux CD

Level of difficultyEasy
Reading time7 min
Views4K

За последнее время я вижу всё больше споров на тему двух популярных GitOps инструментов: Argo CD и Flux CD.

На самом деле я считаю такие споры необоснованными, потому что глубоко убеждён что внимания заслуживают оба инструмента и каждый из них хорош для решения своего круга задач.

В своей профессиональной деятельности я активно использую и тот и другой. Я хочу поделиться с вами своим мнением и кейсами использования. Надеюсь эта статья поможет вам выбрать наиболее подходящий инструмент под ваши нужды.

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Total votes 12: ↑12 and ↓0+12
Comments14

Bootstrapping Azerbaijan as a new center of ASIC design + Verilog Meetup #6 in Silicon Valley

Reading time11 min
Views1.6K

Last week I was doing a seminar on SystemVerilog, ASIC and FPGA at ADA University in Baku, Azerbaijan. I will replicate the last two sessions of this seminar, on RISC-V CPU simulation and synthesis, at the Verilog Meetups on March 3 and March 10 at Hacker Dojo, Mountain View, California. For this reason I am combining the information about Azerbaijan and California seminars in a single post.

First, let's talk about ADA University.

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Total votes 8: ↑7 and ↓1+6
Comments0

Mastering ChatGPT

Level of difficultyMedium
Reading time7 min
Views1.9K

In today's rapidly advancing technological landscape, natural language processing and comprehension have become essential components of everyday life. Leading the charge in this arena is OpenAI's ChatGPT API, renowned for its exceptional ability to understand and interact with human language. Imagine elevating ChatGPT's functionality to new heights, enabling it to carry out specific tasks based on commands given in natural language. This article aims to shed light on the potential of incorporating function calling into the ChatGPT API, thereby enhancing its utility. I will illustrate through practical examples how such extensions can unlock a myriad of opportunities and applications.

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Total votes 5: ↑5 and ↓0+5
Comments0