The PCB Looked Finished Until I Reviewed It: 12 Checks Before Ordering
Series navigation: Episode 1: The Roadmap · Episode 7: Reading Arduino Pin-Current Specifications · Episode 14 The problem: A routed board can look complete while containing a mirrored connector, missing return path, or untestable power rail. The goal: Review electrical intent, physical reality, manufacturing, assembly, and test before ordering. The result: Twelve checks that turn “DRC passes” into a reviewable release decision. AI-generated illustration of a design review, not a manufactured board from this series. The green board on the screen looked like a product The traces were routed, the ground zone was filled, and the 3D view looked convincing. That visual finish created a dangerous feeling: the PCB seemed done. Then a review question changed everything: If the connector is mounted on the real board, which side is pin 1 on? The layout was not a product yet. It was a set of assumptions waiting to meet copper, components, cables, tools, and a manufacturer. ...