First, you should have your diagram made, preferably with the help of some design software. The important thing here is the dimensions of the components, because if you get it wrong it may be impossible to insert the components into the board. This is particularly important when you are working with components such as ICs and others that have many inline terminals, where any board design errors will prevent you from inserting the component. From the PCB supplier this is important now.
Once your diagram is done, print it out on paper, but be careful that it is a mirror print. We’ll draw the diagram on the underside of the board, but design software generally gives you a top view of the board. Check how this is in your software and make the proper print. It is essential that you print at 100% scale, that is, the print size is exactly the actual size of the components. This way you will not risk making a card where nothing fits.
Marking the paths for drawing a printed circuit board diagram
Since we are going to do the drawing by hand, using a pen, we will use diagram printing to mark the pathways (holes where