Eagle is a software for PCB design that works easily and with easy-to-use tools for every engineer.
Components should be placed in the circuit correctly. Just like the example in the figure.
Eagle is free autodesk software and you can find more information here:Eagle software
The eagle is an easy program to learn. To make an electronic card You should start with drawing and drawing the diagram.
For this we must first put in the eagle all the components that we want to put on our electronic board.
In the command bar there is a command that is "ADD" that opens a window with several components that you can choose.
Besides these components that comes with Eagle you can inatalar some libraries with more componenets. FabAcademy has some libraries to download, which are:
After the added components you must create the routes between them and connect them correctly. It is necessary that you have some experience and notions of electronics to do it correctly.
In the Eagle toolbar, you have basic commands to select, move, copy, paste, etc that you can use.
And you also have commands to draw the routes between the components that are the green and blue symbols. In addition you can draw shapes like rectangles, circles, etc ...
To not fill your layout with many routes because it will be confusing, you can use the Label command that is the one that has a green line with an "AB" and make a label to your component, which will join a component with the same name.
For example, labeling an output pin of the microcontroller with "TX" and labeling a component pin with "TX" will make that although you do not see, they are connected.
Your components should be labeled to better understand positioning on the board.
For this you can change the "properties" of each component by clicking with the right side of the mouse. With this it is possible to define the value of each component, this can be useful for example to define the value of the resistors.
The following diagram represents the final drawing of my board.