PCB Design Projects
A printed circuit board (PCB) mechanically supports, and electrically connects electronic and electrical components using conductive tracks, pads and other features etched from one or more layers of copper sheets laminated to and/or between sheet layers of a non-conductive substrate. Components are generally soldered to the PCB in order to electrically connect and mechanically fasten them to it.
PCBs can be single-sided (one copper layer), double-sided (two copper layers on both sides of one substrate), or multi-layered (outer and inner layers of copper, alternating with layers of substrate). Multi-layer PCBs allow much higher component density, because circuit traces on the inner layers would otherwise occupy inter-component surface space.