For starters, should learn how to start? In this article, I summarize several issues, in order to help you understand how to do PCB design,

1. Designed
Prepare component library and schematic diagram for preliminary design, before continuing circuit board design, you need to prepare schematic SCH compo library and circuit board compo packages,
Best by the engineer to design a library of standard size, usually, the first to establish a circuit board component library, to build SCH component library,
Circuit board components encapsulation libraries have firm demand, because it directly affects the installation of the circuit board, it is best to use inventory of compo library, rather than create their own libraries, like the Seeed Fusion, it provides a parts list and Eagle and Kicad library to simplify the process,
Schematic diagram of SCH compo library condition is relatively loose, but should pay attention to pin feature definition and plate compo encapsulate corresponding relationship between libraries,
If you have already completed the preliminary design and don't want to continue for the next six steps, please put the SCH uploaded to Fusion Layout Services page, so your design cost soon arrived and (design) can be used in the production of

2. The substrate structure design
According to the size of the circuit boards and mechanical position, pull the circuit board frame in the circuit board design environment, and according to the positioning for the arrangement required by the connector, button/switch, screw holes, mounting holes, etc.,
Consider carefully and make sure wiring and cabling area (for example, the scope of the wiring area around the screw holes),

3. PCB layout design
Layout design according to the design requirements of plate and frame components, schematic diagram tool create network table (design to create a web table), then the network table (design and import the netlist) import PCB software, then the network table is located in the background of software, so you can call all the components and can be the candidate put connection line between the pins, then according to these components in the layout design,
PCB layout design is the first important step in the process of printed circuit board design, the more complex circuit board, to realize the difficulty of the subsequent wiring effect is more direct, so you need a better layout,
Is very tall to the requirement of layout designer, because they rely on the circuit designer according to and the rich design experience, leading circuit designer is very suitable for small module layout design or esoteric PCB layout design,

4. The PCB layout design
Layout design in the process of printed circuit board design have the greatest effort, and a direct impact on the performance of PCB,
In the process of PCB design, wiring is usually divided into three parts, the first is cross paths, this is the basis of the circuit board design,
The following is a representative of the electrical properties, this is a standard board level measurement, wiring, adjust the electrical wiring in order to obtain the best properties,
The finish is beautiful, even if has acceptable electrical performance, chaos wiring will also give the follow-up improvement, testing and maintenance inconvenience,

5. The layout and printing improve
"Have better circuit board design, circuit board design flaws", mainly because the circuit board design must meet the requirements of hardware design, however, there may be different conflict between specific requirements,
For example, a project to design a 6 layer board, but considering the manufacturing costs, all requirements must be to design a 4 layer board, if you do, you must sacrifice signal shielding layer formation, leading to the signal crosstalk between each layer and poor signal quality,
In typical design experience and optimize the route time is twice the initial route, after finishing the PCB layout optimization, the need for reprocessing, mainly on the board of screen printing, silk screen design on the back of the word, in order not to confused with the surface, it is necessary for image processing,

6.
DFM manufacturability analysisWhen the PCB design is completed, the need for manufacturability analysis (DFM), which is to further reduce the risk in the PCB in the actual production, avoid because the hazard in the process of design let you board failure in the manufacturing process, using HuaQiu DFM design hazard analysis for 20 + can guarantee in the final PCB manufacturing process significantly reduce the risk of failure, for PCB design engineers, PCB design purpose is to achieve the final product output, if there is no guarantee that the success of PCB production, before you do everything is meaningless, as a result, DFM manufacturability design analysis is a vital step,

HuaQiu DFM video tutorial: https://dfm.elecfans.com/service_support