Route It in KiCad

A breadboard is a great place to prove a circuit works and a terrible place to leave it. Jumper wires fall out, connections go intermittent, and nothing you build is repeatable. This guide takes you from a working breadboard circuit to a real manufactured printed circuit board using KiCad, which is free and open source with no seat licence and no cloud account. You will draw a complete schematic, assign footprints correctly, lay out a board, route it, pour a ground plane that actually connects, run the design rule checks, and export the files a fab house needs. Along the way you will learn the process behind the rules, because knowing how a board is manufactured is what makes the constraints make sense. One chapter is devoted entirely to footprint errors, since choosing the wrong land pattern is the mistake most likely to turn a paid order into scrap. You will finish with a verification routine to run before every order. Basic electronics knowledge is assumed; PCB experience is not. If you can build a circuit and want a real board, start on page one.