Common keyboard components and minimum system

Some things commonly used in mechanical keyboards, which are convenient for netizens who make keyboards to find components and learn.
 
The first page is three commonly used minimum systems, and the second page is common components.
They all have many notes. Be sure to read them carefully before use. There are some personally recommended tutorials and other open source projects.
Three minimum systems (the type-c interface part is separated, remember to add it). In addition, pay attention to replace the capacitors, resistors, switches and other components according to your needs. They
 
are basically your own symbols and packages, including the minimum system of common components and 32U2/32U4/APM32.
Some of my symbols have changed the pins (such as 32U2/32U4). Remember to pay attention. Special pins are basically marked, and special packages have text reminders.
Capacitors and resistors are basically 0805 packages, basically all of which are LiChuang basic libraries. You can search by BOM material number and buy them directly from Youxin Taobao store.
 
Some things may have problems without verification. Remember to check them yourself. If there are any problems, you can feedback me in the comment area for modification.
This project is open source based on the CC-BY-NC-SA 3.0 agreement. When reprinting, you need to give appropriate signatures (must include the link to this project), and indicate whether the original has been modified. You may not use this work for any commercial purpose. If you modify, transform or change this work, you may only distribute derivative works generated by this work under the same license terms as this work. This project is open source for a long time and updated from time to time. The attachment contains the APM manual and bootloader file as well as a table of commonly used capacitors and resistors for easy purchase