DIY Synth

BP Synth Circuit Diagram

https://drive.google.com/file/d/1bqjaeJ6gewC67N-3Oe65PlxxNieLI0Tk

KiCad EDA Open Source Circuit Board Design Software

www.KiCad.com

Tutorial PCB Design: How to Create a Printed Circuit Board From Scratch

https://www.build-electronic-circuits.com/pcb-design

Some companies to get your circuit board manufactured