March 11, 2026
Bot or not? Soldering tea
Show HN: I wrote down every expensive hardware development mistake I've seen
Hardware horror stories drop — but commenters ask: “Did a bot write this”
TLDR: A blunt new book lists real, pricey hardware mistakes and how to avoid them, selling early without ads. The comments split between praising hard-earned wisdom and probing whether AI helped write it, sparking a bigger fight over paying for lessons versus trusting free advice — and who gets to teach hardware.
A hardware builder just dropped a tell-all book of real-world blunders — think €80,000 mold fixes and six-month yield crises — and the crowd went wild. The pitch: five parts covering development, the factory, supply chains, mass production, and product lifespan, with blunt lessons like “find the bug in prototype or pay 100x later.” It even explains jargon: EVT/DVT/PVT are the rough-to-final build stages, and EMC is the “won’t-break-the-radio” test. Link? It’s on Gumroad. No ads, 13 day-one sales, big founder energy.
But the comments turned spicy fast. One sharp-eyed user flagged “LLM fingerprints” on the landing page and asked how much AI helped write the book. Cue a split: veterans cheering the brutal honesty (“€80k mistakes are cheaper to read than to live”) versus skeptics side-eying paywalled war stories and possible AI polish. Jokes flew: “100:1 bug ratio? My wallet felt that,” and “2am factory floor PTSD starter pack.” Some accused “gatekeeping hardware,” others said newbies need this roadmap before they torch their budgets. The mood? Respect for the scars, suspicion about AI, and a chorus chanting the old meme: hardware is hard — and apparently, so is convincing the internet you wrote it yourself.
Key Points
- •A book titled “The Hardest Hardware Lessons” documents real-world, costly mistakes in hardware development and how to avoid them.
- •It contrasts formal development processes with practical failures, quantifying costs and providing decision frameworks.
- •Examples include an EMC-related certification failure, an €80,000 tooling modification, and a yield crisis from inadequate PVT validation.
- •The book is organized into five parts: Development, Factory, Supply Chain, Mass Production, and Product Lifecycle.
- •It emphasizes that hardware demands progressive commitment and that bugs found in production can cost 100x more than those found in prototyping.