Now is a good time to decide which components you’ll be using.
The PCB footprint will define the component’s physical dimensions and placement of the copper pads or through holes. The default EasyEDA library has most of the common symbols, but there are also “User Generated Libraries” with lots of other symbols:Įach schematic symbol you use needs to have a PCB footprint associated with it. In EasyEDA, schematic symbols are located in “Libraries”. It’s best to place all of your schematic symbols on the canvas before drawing any wires. Now you’ll see a blank canvas where you can draw the schematic: Once you’re on the Start page, click on the “new Schematic” tab:
Start by logging in to EasyEDA, and create a new project: Plus, the PCB editing software can import all of the components, footprints, and wires into the PCB file, which will make the design process easier (more on this later). The schematic will serve as a blueprint for laying out the traces and placing the components on the PCB. It All Starts With a Schematicīefore you start designing your PCB, it’s a good idea to make a schematic of your circuit.
To demonstrate the process, I’ll use an online service called EasyEDA to design a PCB layout for an LM386 audio amplifier, then I’ll have it manufactured and show you the results. Their free online design software is easy to use and the rates are very affordable.
But that method is messy and it uses a lot of chemicals. It’s much easier (and cheaper) to get your PCB made by a professional manufacturer. You can always etch PCBs at home with a process that’s similar to developing prints from photographic film. The performance of your circuit will depend greatly on how it’s laid out on the PCB, so I’ll give you lots of tips on how to optimize your design. In this tutorial, I’ll walk you through the process of designing a PCB layout and getting it printed by a custom PCB manufacturer.
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