Asha Lindqvist There is a specific kind of USB-C failure that does not announce itself with a dead port or a burned connector. It announces itself with a support ticket that says “sometimes it charges, sometimes it doesn’t,” or “my laptop says the charger is connected but not charging,” or “it worked with my old …
Continue reading The USB-C Port That Charged on the Bench but Not in the Field: CC Resistors, VBUS Discharge, and the Dead-Battery Flag
The Small Lowercase ‘meh.’ Shirt Is a Boundary, Not a Badge
Editorial note: This publication and Quirky Cotton Collective share an owner. The garment preview shows a dark shirt with very small, centered lowercase meh. lettering. No animal. No pride variant. No decorative frame. The period is there, and it matters more than the word. Most slogan shirts work like a badge: large type, high contrast, …
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The Root Vegetable Shirt Is a Diagram of Two Different Promises
Four root vegetables smile out from the shirt: a carrot, a radish, a beet, and an onion, their roots drawn down into a band of soil. Around them, in capitals, the shirt reads LET’S ROOT FOR EACH OTHER AND WATCH EACH OTHER GROW. The pun is doing two jobs at once, and that is the …
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The Composition Notebook Shirt Is a Diagram, Not a Costume
The garment image shows a black-and-white speckled rectangle, a dark binding strip down the left edge, and a white ruled label headed COMPOSITION. Inside the label: an outlined ghost and an outlined pumpkin. That is the whole design. It is a printed notebook cover, not a physical notebook, and the listing calls it a teacher …
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The Radio That Lost 6 dB When the Buck Converter Woke Up: Self-Desense, Harmonic Planning, and Spur Tables
Your prototype radio worked fine on the bench. Then you enabled the buck converter, and the link margin dropped by 6 dB. The receiver didn’t fail. The transmitter didn’t fail. The power supply started switching, and the radio started listening to its own power rail. This is self-desense: a receiver’s sensitivity degradation caused by an …
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The Golden Board That Disagreed With the Fixture: Test Limit Correlation, Guardbanding, and GR&R at the CM
Your prototype passed. Your golden board passed. The fixture says the golden board failed. That is not a board problem. That is a measurement-system problem, and at 1kâ10k unit volumes it is the kind of problem that eats a week of engineering time and produces a shipment hold that nobody can explain to the customer. …
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