Menu: Tools --> Library Editor

Start the 'Library editor' and after selecting a library hit the control button plus icon in the 'Parts' panel.

The following dialog is displayed:

library attribut editor

If you need to create a multi-part symbol then set the 'Multi part' checkbutton and enter the number of parts in the symbol.  For a single part item leave the checkbutton 'unset'.

Minimum library part data

The minimum amount of data required is :

Name

The name used to uniquely distinguish the part in this library.

Id

The text only prefix to a part identifier.  The numeric value is appended when parts are pasted into the schematic.


As symbols of the same name are added to the schematic the numeric Id is increased.  i.e. the symbol identifier is increased as follows : U1, U2, U3 etc. This makes it convenient to add symbols to the schematic.

Optional library part fields

The following are optional (the field data is optional but the attribute description must remain).

Part

Can not be edited here.  It is updated automatically as items are placed.

Value

Set the value of an object here.

Description

This is the description that is shown below the thumbnail

The value of an object can be left blank and '???' will be displayed instead.  This would be the preferred state for a resistor but for an IC the value would be filled with the part type (this value is sent as output from the 'Bill of Materials') see the examples below

Library part examples

Name

PIC16F84

RES

Id

U

R

Part

-

-

Value

16F84-04/P

???

Description

Microcontroller

Resistor

Notes

You can also add attributes in the dialog that will be available to every part created from this library part.

To learn about the library part manager see the Library part manager
To learn about the controls for editing library parts see the Library editor.
To learn about attributes see the Attribute manager.