sorry for this question, but, I already collect all the needed parts for make a Zynthian Box V2, but I still stuck with the all-in-one PCB elaboration, I have tried the Iron method for make the PCB, I even bought the Ferric Acid for the PCB, but I cant get that the design gets in the copper sheet, someone can give an idea of how to make the PCB of the ALL IN ONE module?
Thanks in advance