I wrote down every expensive hardware development mistake I've seen
I've spent years watching hardware teams make the same mistakes — tooling committed before thermal was resolved, manufacturing processes not validated in PVT that only showed defects at volume, components going EOL unnoticed until the factory tried to order them. The pattern was always the same. The costs were always avoidable. Nobody had written it down. The result is The Hardest Hardware Lessons — covering the full journey from first prototype to end-of-life: EVT/DVT/PVT, factory evaluation, supply chain risk, mass production operations, field failures, and product lifecycle…
I wrote down every expensive hardware development mistake I've seen launched on March 8, 2026 with 11 votes, #1,113 of 23,380 launches that month and more than 90% of that year's launches.
In plain words
The Hardest Hardware Lessons is a guide documenting common costly mistakes in hardware development from prototype through end-of-life. It covers the full product journey including thermal validation, manufacturing processes, component obsolescence, factory operations, and field failures. Designed for hardware teams and engineers, it compiles recurring pitfalls that are typically avoidable, offering practical insights to help teams prevent expensive missteps during development and production phases.
written from the facts on this page · September 2026
From the sources
The book that names every expensive hardware development mistake — EVT, DVT, PVT, supply chain, mass production, and end-of-life. Written for hardware founders, engineers, and operators.
Everything nobody tells you about building, making, and managing a physical product. For everyone who has stood in a factory at 2am trying to understand why the product they spent two years building isn't working — and for everyone who would rather not. 13 copies sold in the first 24 hours. No ads. Just hardware people recognising something true. There is a published version of how hardware products get built, and there is an unpublished one. The published version appears in methodology documents and process frameworks. It describes the phases in clean sequence with the reassuring implication that a team which follows the process correctly will produce a product that works, ships on time,…from thehardesthardwarelessons.com
In the maker’s words, at launch
I've spent years watching hardware teams make the same mistakes — tooling committed before thermal was resolved, manufacturing processes not validated in PVT that only showed defects at volume, components going EOL unnoticed until the factory tried to order them. The pattern was always the same. The costs were always…
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