Essays
An 18-year journey building FocusCanvas, a comprehensive life management system on Obsidian that tracks activities, finances, habits, and life balance through Telegram bot integration and automated data processing, optimized for minimal cognitive load.
Essays
An exploration of the surprisingly diverse peaceful applications of gunpowder technology, from construction tools and fire extinguishers to airbags, rocket engines, oil well stimulation, and MHD generators.
Essays
The second part of a deep dive into upgrades for 8-bit Dendy/Famicom/NES consoles — covering overclocking, memory expansion, Chinese VTxx chipsets, hobbyist projects like CopyNES, network technologies, and modern FPGA reproductions.
Essays
A new programming ideology called SOSAL that focuses on social collaboration within development teams, built around five core principles: Socially-Conscious Code, Open by Default, Simple Scalability, Agile Adaptivity, and Learning-Driven Logic.
Essays
An accessible visual explanation of the Discrete Fourier Transform using mechanical recorder analogies, progressing from zero signals through sinusoids to harmonic analysis, culminating in a practical Python implementation that decodes telephone numbers from DTMF audio.
Essays
A deep dive into the silicon-level implementation of Intel 80386 registers, revealing six different circuit designs used for 30 physical registers, driven by backward compatibility with 1971-era processors.
Essays
A hands-on project building a directional ultrasonic sound panel using 50 ultrasonic transducers at 40 kHz, achieving consistent audibility at 30 meters with a tightly focused sound beam.
Essays
An engineer's honest review of Xreal Air AR glasses, originally intended as a portable monitor replacement for business trips, which turned out to have significant limitations for productive work.
Essays
A deep dive into nine common performance pitfalls of using await fetch() in JavaScript, from cold TCP connections and DNS/TLS overhead to JSON parsing bottlenecks and HTTP/2 head-of-line blocking, with practical fixes for each.
Essays
A detailed walkthrough of reverse-engineering a budget Spreadtrum SC6500L-based phone (Explay B240) to achieve native code execution: from discovering debug symbols in the firmware to building a binary loader that runs C programs from a MicroSD card.
Essays
A humorous autobiographical story about a man who went from sleeping in basements and fighting over cheap beer to becoming a TypeScript developer deploying microservices in Kubernetes.
Essays
A deep dive into the hardware modifications and upgrades possible for the Famicom/NES/Dendy console family, covering LED indicators, controllers, video output mods, audio chips, cartridge mappers, flash cartridges, and converting the console into a personal computer.