articles and knowledge

An engineering guide from the Electric Vehicle & Battery Engineering Series covering field-oriented control, space vector PWM and MTPA, the algorithms behind every high-performance EV drive. On Kindle and in paperback.

A review of ChatStick's social studies practice app for Thai lower-secondary students: 3,000 questions (1,000 per grade) across all 5 core-curriculum strands, detailed explanations, a mistake notebook, Smart Review and timed mock exams. Works offline. Free on the App Store.

Learn to solve the Rubik's Cube on Android with CubeMaster 3D: 10 step-by-step lessons on an interactive 3D cube, an auto solver for your own scramble, 30+ CFOP, OLL and PLL algorithms and an Ao5/Ao12 timer. Works offline. Free on Google Play.

A review of the English M.1–3 practice app from ChatStick: 3,000 questions across three grades, grammar, vocabulary, reading and listening, detailed Thai explanations, a mistake notebook, spaced-repetition review and timed mock tests. Free on the App Store.

A 92-page engineering playbook for running LLM applications in production — observability with Langfuse and Arize, evaluation with DeepEval and RAGAS, RAG architecture, cost optimisation and safe rollouts. Here's what's inside, who it's for, and where to read it on Google Play Books.

A readable engineering history from ChatVariety Team that traces the chip from the first transistor to today's AI accelerators and the fragile global supply chain behind them. On Kindle and in paperback.

A full review of TOPIK Vocabulary, a new Korean vocabulary app with 4,700+ words in 47 categories, Hangul, romanization, Thai meanings, example sentences, flashcards, spaced repetition and 7 quiz types for TOPIK I and II. Free on the App Store.

A 120-page biography of Thomas Edison's inventions — the phonograph, the light bulb, early film and the Current Wars — and how they still shape modern life. Here's what's inside, who it's for, and where to read it on Google Play Books.

An engineering guide from the Advanced Mobility Engineering Series covering ETCS/ERTMS, CBTC and Positive Train Control, the systems that keep modern trains safely apart. On Kindle and in paperback.

A full review of Little Wuxia Stickers: 139 original chibi Wuxia stickers in 10 packs, 20 characters, an iMessage sticker pack, a custom sticker keyboard and Home Screen widgets. Free to start with no account needed.

A review of NCLEX NursePrep Coach for Android: NCLEX-style questions across 14 nursing categories, Next Generation NCLEX case studies, detailed rationales, flashcards, mock exams and readiness analytics. Free on Google Play.

A review of the Grade 9 (M.3) Social Studies practice app by ChatStick: 1,000 questions covering all 5 strands of Thailand's core curriculum, detailed explanations, hints, a mistake notebook, Smart Review and mock exams. Works offline. Free on the App Store.

A 92-page technical guide to AI compilers — MLIR, Apache TVM, XLA, LLVM and Triton — from graph-level IR to code generation for TPUs, Apple Neural Engine and AWS Inferentia. Here's what's inside, who it's for, and where to read it on Google Play Books.

An engineering guide from the Energy Systems Engineering Series covering PEM fuel cells, water electrolyzers and the infrastructure behind green hydrogen. On Kindle and in paperback.

A full review of New Year Chaos Stickers: 108 hand-drawn New Year stickers in 8 themed packs, from countdown chaos to after-party recovery. Use them in iMessage, a sticker keyboard and widgets. Start free with 3 full packs.

A 193-page journey through Paul McCartney's life and music — from Liverpool and The Beatles to his solo career and lasting cultural impact. Here's what's inside, who it's for, and where to read it on Google Play Books.