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Electrical & Electronics Engineering

Practical engineering notes on electronics, hardware, embedded systems, machine vision, and software.

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Slowbeam.dev
Machine Vision & Embedded Systems Engineer
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My First PCB Prototype with AI: The Connector Was Harder Than the Design

My First PCB Prototype with AI: The Connector Was Harder Than the Design

Aug 31, 2026

I designed and ordered my first small auxiliary PCB for work. AI accelerated circuit design and production preparation, but connector sourcing and validating the board in the real world still required careful manual work.

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ThunderScope: The Open-Source Oscilloscope That Moves the Display and Processing to a PC

ThunderScope: The Open-Source Oscilloscope That Moves the Display and Processing to a PC

Aug 12, 2026

ThunderScope is an open-source oscilloscope that streams four channels of 1 GS/s data to a PC in real time over Thunderbolt, USB4, or PCI Express. This article explores its PC-based display and processing architecture, the ngscopeclient and TS.NET software stack, multi-unit synchronization, and the potential for custom gateware.

Cerebras WSE-3: Why Turn an Entire Wafer into a Single AI Chip?

Cerebras WSE-3: Why Turn an Entire Wafer into a Single AI Chip?

Aug 12, 2026

Cerebras challenges the memory-bandwidth bottleneck in AI inference with WSE-3, a wafer-scale processor integrating 4 trillion transistors and 44 GB of on-chip SRAM. This post looks at the benefits of wafer-scale design, its defect-tolerant architecture, partnerships with OpenAI and AWS, and the competitive landscape with NVIDIA and Groq.

Computer Vision in the World Cup: From Goal-Line Decisions to Semi-Automated Offside

Computer Vision in the World Cup: From Goal-Line Decisions to Semi-Automated Offside

Jul 6, 2026

World Cup officiating technology is moving beyond simple video review and turning stadiums into real-time data spaces. This post explains how goal-line technology, semi-automated offside, connected-ball data, and optical tracking systems help improve both fairness and the flow of the game.

Between InGaAs and Si: SWIR Sensor Supply-Chain Risks and the Practical Alternative of NIR CMOS

Between InGaAs and Si: SWIR Sensor Supply-Chain Risks and the Practical Alternative of NIR CMOS

Jun 20, 2026

As supply-chain risks grow around InP and InGaAs-based materials, not every SWIR application necessarily requires an InGaAs sensor. Below 1,100 nm, silicon-based BSI CMOS can be a practical alternative in terms of cost and supply stability. This article looks at the technical boundary between InGaAs and silicon.

The Speed of Chinese Manufacturing Seen at Shanghai Vision China and Semicon China 2026

The Speed of Chinese Manufacturing Seen at Shanghai Vision China and Semicon China 2026

Jun 3, 2026

A recap of visiting Shanghai Vision China and Semicon China 2026. The shift toward edge devices by Chinese companies, the overwhelming scale of Semicon China, and the vertical integration of materials, components, and equipment made the speedโ€”and the urgencyโ€”of Chinese manufacturing feel very real.

The Future of Vibe Coding, as I See It

The Future of Vibe Coding, as I See It

May 6, 2026

Vibe coding makes it seem as if anyone can build software now, but beneath that promise lie new constraints: token costs, platform moderation, market concentration, and relentless quality competition. This essay looks at the future of vibe coding from both optimistic and skeptical angles, and argues that what we really need is not a fantasy of easy money but the ability to adapt to the AI era.

talkie: The Language Model Frozen in 1930

talkie: The Language Model Frozen in 1930

May 1, 2026

An experiment in conversing with talkie, a language model trained only on texts written before 1930. From lunar travel and Korean independence to predictions about 2026, it is a fascinating record where the biases and insights of a century-old worldview collide.

A Late Review of Semicon Korea 2026

A Late Review of Semicon Korea 2026

Mar 24, 2026

The Semicon Korea 2026 venue showcased an expansion phase created by AI demand and expectations for recovery in the memory market. At the same time, the exhibition revealed a structural change that strongly reflected the characteristics of a job fair beyond just technology promotion.

What does the CPU think? A great introductory article on building a 16-bit CPU directly in C.

What does the CPU think? A great introductory article on building a 16-bit CPU directly in C.

Mar 15, 2026

This is a text that helps you understand registers, memory, ALU, flags, branching, stack, and assembler while directly implementing a 16-bit CPU in C code. It is especially recommended for those who want to connect computer architecture not through abstract explanations but through working code.

Axelera AI's large investment attraction: Reasons why European AI semiconductors are gaining attention again

Axelera AI's large investment attraction: Reasons why European AI semiconductors are gaining attention again

Mar 9, 2026

Dutch AI semiconductor startup Axelera AI has secured an investment of $250 million. This news goes beyond simple funding; it reaffirms the presence of European AI semiconductor startups and the growth potential of the edge semiconductor market for AI inference. I summarized why Axelera AI is gaining attention and what this investment means for the industrial AI and machine vision sectors.

Labor song recommendation channel - An era where anyone can create, yet some are still chosen.

Labor song recommendation channel - An era where anyone can create, yet some are still chosen.

Feb 27, 2026

With AI-composed concentration music overflowing in YouTube work playlists, a sense of 'familiar yet unappealing' fatigue has emerged. As this happens, channels that create song selections and videos manually become even rarer. Even in an era where anyone can create, there is a clear reason why certain content gets chosen.

Parenting and business, ultimately 'securing time' is essential.

Parenting and business, ultimately 'securing time' is essential.

Feb 11, 2026

Reading Adrian Li Mow Ching's Father's Day Q&A on Clicks Blog made me rethink the meaning of 'securing time.' Time is not something that is left over; it must be secured. These days, I have been prioritizing handling over planning and living reactively. Through the perspective that parenting and leadership are similar, I reflect on the attitude of 'bystanding' and intend to start implementing small routines again.

Moltbook: A Community of AI Agents

Moltbook: A Community of AI Agents

Feb 9, 2026

Unlike the macro trends in AI news, 'Moltbook,' derived from personal-based agent projects, is a community where AI agents interact through posts and comments. The continuation of conversations, trolling, and tip-sharing resembling human communities is intriguing, but it also evokes the imagination that the 'dead internet' could become a reality.

[2026 Davos Dialogue] Yuval Harari's Warning: When AI Takes Over Language, Human Identity Will Collapse

[2026 Davos Dialogue] Yuval Harari's Warning: When AI Takes Over Language, Human Identity Will Collapse

Jan 29, 2026

Yuval Harari, having accurately understood LLM as a 'language token-based probabilistic model,' poses a more important question: 'What is Thinking?' As language begins to be replaced and dominated by AI, laws, religions, books, and cultures could be restructured. He also warns of the potential for 'AI Immigrants' to flow in without borders, rapidly changing job and power structures.

Two key points of product development that Markdown has taught us

Two key points of product development that Markdown has taught us

Jan 29, 2026

What initially felt like a barrier to entry, Markdown has become the basic syntax for communicating with LLMs through notes, development, and blogs. We learn again from the history of Markdown the core of product development: precisely defining simple inconveniences and solving them in an even simpler way.

Overview of LSSTCam: Structure and Performance of the World's Largest Camera

Overview of LSSTCam: Structure and Performance of the World's Largest Camera

Jan 26, 2026

The LSSTCam is an observational camera with 3.2 gigapixels, 189 sensors, and processes tens of GB of data per second. This article briefly and clearly summarizes the key specifications and structure of the LSSTCam, explaining why it is called the 'world's largest camera.'

Allied Vision, TKH's declaration of integration of 5 camera brands

Allied Vision, TKH's declaration of integration of 5 camera brands

Jan 17, 2026

The TKH Group's subsidiaries Allied Vision, Chromasens, Mikrotron, NET, and SVS-Vistek will be unified under a single 'Allied Vision' brand. The product lineup will expand from GigE/MIPI to CXP and line scan, with the core focus on providing a unified platform experience based on an integrated SDK.

GenFeA: Lowering Barriers to Machine Vision Integration

GenFeA: Lowering Barriers to Machine Vision Integration

Jan 11, 2026

The EMVA GenIcam group presented GenFeA, which makes camera integration easier in embedded and heterogeneous architectures. Let's take a look at the details and prospects.

SD Card Image Comparison

SD Card Image Comparison

Jan 7, 2026

Verifying whether an OS boot image is valid by comparing images stored on SD cards.

Using a Raspberry Pi as a Serial Communication Relay Server

Using a Raspberry Pi as a Serial Communication Relay Server

Jan 7, 2026

A field issue occurred where serial communication between a PC and an Arduino became unstable at a distance of 3โ€“4 meters. To resolve this without modifying the existing host application, a Raspberry Pi was introduced as a relay server using a Gigabit network and virtual COM ports. This post describes a practical, albeit inefficient, workaround for urgent situations.

A Personal Cheat Sheet of Git Commands (with Remotes)

A Personal Cheat Sheet of Git Commands (with Remotes)

Jan 1, 2026

A quick write-up of the Git commands I occasionally need in the terminal.

Letโ€™s Use Tailscale for Remote SSH Access

Letโ€™s Use Tailscale for Remote SSH Access

Dec 17, 2025

After a security incident, I found an answer: building a safe and convenient remote SSH setup with Tailscale.

Creating an Internal GitHub with Gitea (Open Source)

Creating an Internal GitHub with Gitea (Open Source)

Nov 24, 2025

Running an internal GitHub-like service on a private network using the open-source Gitea.

Troubleshooting When Using MobaXterm SSH

Troubleshooting When Using MobaXterm SSH

Nov 6, 2025

Information about the /etc/ssh_config line 1: Missing argument error that occurs when using SSH in MobaXterm.

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Slowbeam.dev
Machine Vision & Embedded Systems Engineer
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