PCB Design from Scratch - Extended Professional EditionA Practical Step-by-Step Guide from Requirements to a Manufacturing-Ready PCBDesigning a PCB is not just a matter of drawing a schematic and routing traces. A successful board requires a complete engineering workflow that connects requirements, architecture, component selection, schematic capture, libraries, stackup, placement, routing, power distribution, grounding, verification, manufacturing, assembly, bring-up, debugging, and revision control. PCB Design from Scratch - Extended Professional Edition develops this complete process in a practical and structured way, guiding the reader from the first product idea to a verified prototype and production-ready release. The book uses Altium Designer and KiCad as parallel implementations of the same engineering method. The interfaces are different, but the design decisions remain the same. The objective is therefore not only to teach software commands, but to develop a transferable PCB design methodology. The extended edition covers: product definition, requirements and system architecture component selection, datasheet analysis and controlled BOM creation schematic capture and structured design review symbol, footprint and library management two-layer and four-layer board strategy stackup definition and PCB design rules physical architecture and component placement routing corridors and signal flow power entry, protection and voltage regulation power distribution, decoupling and high-current geometry grounding, reference planes and return-current paths USB and RS-485 interface design differential pairs, vias and layer transitions analog, digital and communication-zone partitioning DRC, ERC and multidomain design review thermal, EMC, mechanical and manufacturability checks DFM/DFA and assembly accessibility Gerber, drill, BOM, pick-and-place and fabrication documentation independent CAM review and manufacturing release packages prototype inspection before power-up controlled first power-up and bring-up sequencing measurement-driven troubleshooting and root-cause analysis ECOs, revision control and design iteration transition from simple prototypes to professional multilayer implementations final PCB release and production-readiness checklists. Numerous engineering figures, reference maps and grouped full-page workflows show how the major design decisions are connected. Topics such as return paths, power distribution, differential routing, via transitions, interface protection, thermal hotspots and manufacturing documentation are treated visually as well as technically. The book follows the complete development sequence:PRODUCT IDEA → REQUIREMENTS → ARCHITECTURE → SCHEMATIC → LIBRARIES → PCB SETUP → PLACEMENT → ROUTING → VERIFICATION → MANUFACTURING → ASSEMBLY → BRING-UP → REVISIONThis volume is intended for students, makers, electronics engineers, embedded developers, hardware engineers and PCB designers who want to understand how a complete board is actually developed rather than studying isolated topics. As part of the PCB Engineering Mastery Series, this book serves as a practical bridge between foundational PCB knowledge and the more specialized volumes on layout, manufacturing, signal integrity, EMC, power integrity, RF, reliability and mission-critical electronics. It shows how all of these disciplines begin to interact inside one real PCB project.