How to make a custom library part in Eagle CAD tool

Step 14 Building the Symbol

Click on the symbol button and add a new symbol. This step is identical to step 7 except its for a symbol not a packge. The symbol is what will appear when you are drawing your schematic. The schematic is a fundamentally different representation of your circut then the layout (or package view). The package needs to match the datasheet as it represents the physical entity and has a huge impact on the baord layout. The schematic should be designed so that it is easy to read and neeed not be a prefect representation of the devcie (in terms of size). For examplep pins without connections dont need to be placed on the schematic.

Comments

[ohnoezitasploded]

Thanks for this great tutorial. Is there a way to copy a symbol from another library? The command copy SYMBOLNAME@LIBRARYNAME doesn't work.

[kevinfodor]

I have even a simpler way.
Open the library where you want the part to be copied into (Library->Open)
Go to the Eagle Control Panel and find the \lbr folder where the library is that you want to copy from (under Libraries).
Expand and find the device/package you want to copy and right click it.
Select "Copy to Library"
That's it. Done.

[FazJaxton]

You can open the library, edit the part, select the cut tool, then select the group tool and highlight the entire symbol. Then right-click on the selected part and select "Cut: group". Return to your library, edit your part, select paste, and you should now have the part.

[ohnoezitasploded]

Thanks, I never would have figured that out. The copy command doesn't copy, and the cut command doesn't cut in that it doesn't remove the original. Non-intuitive.