Welcome to Sad.Pink

Sad.Pink is a notebook of practical notes on CS and electronic engineering—short, runnable, and skimmable.

Programming Languages, patterns, data structures, and complexity—bite-sized and visual.

Shell tips, servers, networking, filesystems, and performance.

ESP32, STM32, Zynq, HDL flows, drivers, and RTOS notes.

Sensors, power, PCB notes, measurement and debugging.

Docusaurus, build pipelines, CLIs, DX & automation.

Concise cheat sheets, interview prep, and quick references.