Summary:
Altium Designer is a powerful PCB design software. This article will be the first half of my learning record. The circuit schematic drawing of the minimum system of stm32 is drawn. It will be introduced from three aspects: familiarity with AD environment, creation of component library, creation of schematic diagram, and a summary.
1. Familiar with AD environment
I am using AD (version 20.1.0)
First of all, the shortcut keys I want to share the most(The use of shortcut keys will increase the efficiency of drawing a lot), the following is the operation and function of the shortcut keys I summarized:
| hot key | effect |
|---|---|
| Ctrl+h | replace |
| Shift+mouse wheel | Move left/right |
| Ctrl+R | Copy or re-paste objects |
| Ctrl+M | Measuring distance |
| Check+space | Spin |
| P+L | Draw a line |
| P+N | Place the network logo |
| Left button + X | Flip left and right |
| Left button + Y | Upside down |
| P+W | Schematic connection |
| P+B | Schematic placement bus |
| Ctrl+shift+V | Array paste |
| TAB键 | Pop up the properties of the operation |
More may refer here
Second, create a component library
Don’t say too much about the AD interface, enter AD, first create a new project, click on the topProject->New Project->PCBCreate your own project and generate .PrjPcb file, here I named it My_stm32.
After that, we directly started to build our own schematic library diagram. When drawing a schematic diagram with AD, various component schematic diagrams need to be placed. Although the built-in components of AD are very complete, it is inevitable that when the components you need cannot be found, we need to edit or create components at this time.
- selectFile>New->Library->Schematic Library, Will generate a component of Component_1 by default, as follows:
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Create components
Click "Place Rectangle" on the symbol drawing toolbar, and then place the pin. You can right-click the place-pin or use the shortcut keyPP，Press the TAB key before placing, Set the attributes of the pins as shown in the figure (here I take the usb module) and set the parameters as follows:
Here I will not introduce how to add the package of the components, the next part will introduce the PCB package and SCH package of the components and chips in detail.
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Create optocoupler components and diodes
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Finally, save the created components.
The following is the component library I drew
For detailed tutorials, please refer to Fanyi Education , a summer self-study tutorial, I hope to help you
Three, draw the schematic diagram
Below I will introduce the details of the design (thanks to my dear for the tutorial)
step1: Right-click My_stm32.PrjPcb, click schematic to create a schematic
You can make some changes, such as not the lower right corner of the head
step2: Import the created component library, click the small gear in the upper right corner, and perform the following operations in sequence
In this way, the component library can be imported and moved up to the top
step3: When the preparation is done, you can draw the schematic diagram, place -> component selection, drag in the required components, because the line is too short, we first draw the line to lengthen the line, and then place the network labelPress TAB to set the name and location before placing the network label
The same configuration of pin headers and other components
step4: Draw a boundary line, after drawing a module, we will frame it with the boundary line, right click on the following position to select a straight line
Then draw the boundary line
step5: In the same step, add modules such as reset module, SWD, crystal oscillator, etc.
Finally, the following figure is constructed:
But note: it’s not over yet, the place marked by the red wavy line has no name
Why don't we set it up?
Because in the end it can be set up together
step5：Tools -> Annotation -> Dynamic Annotation Schematic Diagram, The following interface pops up
Click Yes, the label is automatically set
step6: After everything is completed, the schematic diagram is designed
Four, summary
This time I tried to learn AD and draw the circuit schematic diagram of the lowest system of stm32. Altium Designer is a powerful PCB design tool. It is convenient and high-end to design PCB. Of course, only the circuit schematic diagram was drawn this time, and the PCB will be drawn next time to achieve the purpose of improving my ability.