LINKS E DOWNLOADS PARA PCB
Abaixo, alguns Softs Gratuitos para a elaboração de suas PCB.
DESIGN SPARK
https://www.rs-online.com/designspark/pcb-download-and-installation
ZenitPCB
http://www.zenitpcb.com/Download.html
Kicad
http://www.kicad-pcb.org/
ExpressPCB
https://www.expresspcb.com/