( 1 ) : schematic drawing of the mark when the pin must use network NET do not use text TEXT otherwise cause problems when the PCB guide ( 2 ) : Schematic unfinished when we must allow all components have the package, otherwise, when the guide will not find PCB components and some components can not be found in the library is to paint himself , in fact, a good practice is still painted himself finally have its own library , it would really easy to do . Painting process is to start FILE/NEW-- " select SCH LIB -" This library into the part editor - " After drawing on the elements and key TOOLS-RENAME COMPONENT rename components. Component packaging painting hair with this too, but the choice is border PCB LIB, elements are in TOPOverlay layer is yellow. ( 3 ) : After drawing elements in order to give rename, select TOOLS Tools ---- "ANNOTATE comment and then select the order ( 4 ) : Before transformed into PCB, to generate reports, mainly netlist choose DESIGN Design - --- "Creat Netlist create a netlist ( 5 ) : there is to check the electrical rules: choose TOOLS -> ERC (6):. then you can generate PCB error generation process if certain modifications to correct schematics the re- generation PCB (7): PCB first step must be a good beginning , you should let go of the line as short as possible , through the hole as possible. ( 8 ) : draw a line before the first design rule : TOOLS --- Design Rules, Routing in Clearance Constrain the design of the optional 10 GAP also optional 12, ROUTING VIA STYLE set vias , the maximum outer diameter of the smallest disk Han outer diameter, the largest inner diameter , the inner diameter of the smallest size. Width Constraint set the line width , maximum and minimum ( 9 ) : the width of an ordinary drawing a line on 12MIL, the external power supply and ground on lap 120 or 100 , the film 's power and ground on the 50 or 40 or 30 , the grain town line to be thick, to be placed next to the microcontroller , utility lines should be thick , long-distance lines to be rough , lines can not turn at right angles to 45 degrees, power and ground , there are other signs must be indicated in the TOPLAY facilitate debugging connections. If you find that figure is not correct, we must first change the diagram, schematic and then more PCB (10):. VIEW option where you can choose the best option below inch or millimeter .
