基础概念
Same functionality, different forms of components?
Ans. Package
Packages attach on surface?
Ans. SMT(surface-mount technology)/SMD
Package name from the figure?
Ans. DIP(Dual-inline Package)
What components do 0805, 0603, 0402 and 0201?
Ans. 
Connection between multilayer?
Ans. Via
DEMO
Eagle 电路制作
很多的开源硬件都有 eagle 文件的，直接就把电路公布了
视频
链接🔗
华宇万维家电维修🧰已经到这个地步了吗😅