Schematic Circuit Design at Altium Designer

As you know, in our previous articles we have learned what schematic and PCB libraries will be like in Altium Designer in general. The next step is to create a project where we can use our libraries that we have prepared in Altium. In other words, we are gradually moving to a project with you. At this point, as we know, there are certain important information that we need to know. One of them is the schematic design part of our circuit at Altium Designer, which is what we will learn today. Let's all get into this together.

Creating a Project File

Create a New Project

At this point, the first thing we need to do is create a new project from menu » create project or switch projects to our existing project. As you know, we use individual pages in our designs for both schematics and PCB design. Since we will work on schematic design in this article, let's continue from there. We will already share with you a separate article for the PCB part of the job.

Introduction to Schematic Design

When we log in to our schematic file, this screen will be the first to come. In fact, the whole design process can be carried out comfortably from here.

Schematic Design Screen

Now here will be the general settings of your schematic page, as we first want to tell you. At this point, you can use the grid unit in mm or miles on your page, although it varies from person to person. We'll keep telling you over mm, but it's entirely your choice.

Here you must first open the schematic section from the preferences section. In fact, you can make all the settings you want from there anyway. Here we share below an image of the interface where the grid settings are made for a really important topic.

Grid Settings

In fact, as the image above shows, you can use your grid settings as you wish. This place becomes 1mm, the place becomes 2.5mm. Here you should make sure that the grid fits fully when placing only the schematic appearance of the components. This will be both more professional and help you do your job more accurately. Because in other cases, sometimes the pins of the components may have trouble connecting fully, and you may not notice this during the design, which is not the kind of thing we want.

Pin Connection

We put the image above as an example for you. When connecting inter-pin paths, make sure that the path is fully secured from the pin. Otherwise, when you go through the PCB design process, you will notice that there will be no connection to those pins of your component. This will be a waste of time. Let's make this clear for the last time with another image.

From this image, you will understand more easily what the connected pins look like.

Schematic Placement of Components

In this part of the topic, we will now see how to place the symbols of our components on our shaamtic page. Actually, it's really simple. All we have to do is click on the Components tab at the bottom right. Then we can select the component we want and drag it onto our page. Let's make this clearer with an image.

Component Tab

From this page you have seen, you can place the component you want on your page in any library. Then comes the connection process that we have already talked about.

In the last part of our article, let's see brief descriptions of a few concepts that will come in handy if you know.

Net Label

A network identifier used to create links to other Network Labels with the same name on the same schematic page. Network Labels can be placed on component pins and paths you draw. Note that Net Tags do not link between pages unless project options are configured to use a Global Net Identifier Scope.

Pin

It is placed in the schematic symbol editor to represent physical pins on the component. Only one end of the pinin is electrically active.

PORT

It is used to connect the network from one schematic page to another. The connection can be horizontal in a vertical or flat design in a hierarchical design (vertical and horizontal designs are described below). If allow ports to name networks is enabled in the Project Options dialog box, port names are used to name networks. In this case, Ports are also connected within a schematic page.

You can easily use these Net Label and Port concepts in your schematic designs. These will give you a more beautiful and professional look during design. And someone else will be more comfortable understanding your project when reviewing it. Because if you always make way for more complex projects where the number of components is increasing, things can really get complicated.

Net Label

After you place the Net Label, you can change its name as desired. From this point on, the link will be automatically provided wherever you use this Label within the page. At the same time, during PCB design, these Labels will make it easy for you to draw intercompal paths in PCB Routing.

Port

This is also true in Port. These will make it easier to understand your circuitry.

Schematic Design Example

Schematic Design Example

In fact, we just need to know them at the introduction to its schematic design. As we said at the beginning in this article, we have obtained information that is important and will give us speed. Anyway, in the next step, we will start building a project from scratch with you. In this way we will have the opportunity to examine everything related to schematic and PCB design in more detail.