Circuit board design course project

I. Overview
"Circuit Board Design Course Project" is a practical course for undergraduate students majoring in Electrical Engineering and Automation. It's a fundamental tool-based practical course designed to complement courses such as microcontrollers and circuit board design, as well as Protel hands-on practice. It's an essential skill for electrical engineering students. Through this course, students will understand the principles and uses of commonly used circuits and chips in circuit board design, learn the design process and techniques, and become familiar with the use of Altium Designer software. By completing the circuit board design project, students will master the design of circuit schematic component symbol libraries, the drawing of circuit schematics, the design of component package libraries, and the design of printed circuit boards. They will also gain a basic understanding of how to use Altium Designer software and ultimately complete a full PCB board design.
This guide is based on the "Circuit Board Design Course Project" syllabus, combined with the characteristics and syllabus requirements of the undergraduate Electrical Engineering and Automation major. While students understand the structure of circuit boards and master the use and operation techniques of Altium Designer software, they will learn to analyze and solve simple control system design problems. It aims to help students master circuit board design skills while emphasizing the integration of theoretical learning and practical ability, promoting the connection between theory and practice, and laying a solid foundation for subsequent courses and the improvement of practical skills.
II. Course Design Content
(I) Organizational Form
The course design is to be completed independently by each student. The instructor will distribute relevant course design materials to the students and explain the methods, steps and requirements of the course design. The design process will be carried out through classroom-based centralized guidance and independent design. The course design requires each student to independently use Altium Designer software on a computer to complete the creation of a project, the creation of relevant libraries, and the design of relevant schematic diagrams and PCB layouts after the teacher's centralized guidance. At the end of the course design, a course design report is required, along with printed schematic diagrams and PCB layouts, and a single-sided or double-sided printed circuit board of appropriate size is required.
(II) Content and Time Arrangement
1. PCB Layout Design
① Create a PCB project named after yourself.
② Create a component symbol library named after yourself under the project. This component library contains all the components in the circuit diagram given in the design task. Each component name must contain your name.
③ Create a PCB component library named after yourself under the project. This PCB component library contains all the components in the circuit diagram given in the design task. Each component package name must contain your name.
④ Create a schematic file named after yourself in the project, and complete the addition of library files, placement of components, and connection of wires as required.
⑤ Create a PCB file named after yourself in the project, generate a netlist, set the board boundaries and screw holes as required, import components, adjust component positions, and complete the routing using the automatic routing function of AD software.
⑥ Write a course design report, attaching a printed schematic and PCB layout.
For students who are more familiar with AD software, after establishing a PCB footprint library, they can directly create a PCB file, then drag in the required component footprints, and manually route according to the schematic provided in the task sheet!
Note: Add text in an appropriate location on the designed PCB layout. The text content is your own name or the name of a member of your group (Chinese characters or Pinyin are acceptable).
2. Production of the Printed Board
① Printing. Print the designed PCB layout onto transfer paper (paper with a film on one side; during printing, the toner must be applied to the side with the film) using a laser printer (must be a laser printer).
② Cleaning the Copper-Clad Board. Clean the dirt or rust on the single-sided or double-sided copper-clad board with fine sandpaper. During the cleaning process, ensure the thickness of the copper plating (the thinner the copper plating on the PCB, the higher the resistance of the interconnects, which is detrimental to the operation of the designed circuit).
③ Transfer. Secure the transfer paper and the cleaned copper plating with double-sided tape (a small amount, applied to the edges). (The double-sided boards must be aligned on both sides; otherwise, vias and component holes will be unusable and the board will become unusable). Turn on the laminator and pass the fixed copper plating through it to ensure the toner adheres completely (sometimes it may take two passes if necessary). For areas where toner is not applied, use a marker to mark them.
④ Etching. Prepare a solution of ferric chloride in warm water. Immerse the transferred copper plating in the ferric chloride solution for etching. During etching, turn the board over frequently and closely monitor the process. Once the areas not covered by toner are completely etched, remove the board and rinse it in clean water to remove any remaining ferric chloride residue.
⑤ Drilling. Using a mini electric drill or mini bench drill, attach a suitable drill bit and drill holes in the component holes or vias on the board.
(III) Specific Requirements and Precautions
① Course Design Requirements: Design and fabricate a PCB board for a low-voltage inverter based on a 51 series microcontroller. ② Use Altium Designer software to complete the circuit schematic and PCB layout design for the required functions.
③ The course design report should include: the purpose of the course design, the requirements of the course design, the content of the course design, an introduction to the system schematic design (including the microcontroller minimum system, display circuit, half-bridge drive circuit, full-bridge inverter circuit, etc.), the steps for drawing the schematic and PCB layout, a selection of components and an introduction to the steps for drawing their schematic and package diagrams, reflections, and a printed version of the schematic and PCB layout. (Diagrams required in the report can be printed out and pasted in the corresponding positions on the report.)
④ The course design report should use dedicated course design report paper and cover, and be handwritten for no less than 13 pages (excluding the printed schematic and PCB layout, and reflections of no less than 300 words).
III. Assessment Methods and Grading Standards
This course design adopts a three-pronged assessment method: classroom attendance, practical software operation and design, and report writing. Class attendance accounts for 20% of the total grade, practical software operation accounts for 20%, and the course design report accounts for 60%.

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