Differences

This shows you the differences between two versions of the page.

--- software:eagle_cadsoft [2011/06/12 15:06] – admin
+++ software:eagle_cadsoft [2013/03/22 22:33] – [Component custom design] admin
@@ Line 5: / Line 5: @@
 ===== Libraries within Eagle =====
-In the Control Panel within Eagle, library folders contain files with IC manufacturers, group of generic components or group specific symbols. Eagle treats each file as a library, containing devices (Components having a link between one or more Symbols and a Package) or device sets((i.e. equivalent components sharing the same functions but having different packages and/or symbols, like a LM555D and LM555N)). Although Eagle refers to a device set as devices sharing common functions, perhaps the term device breed would give a closer match to what it is. If a library is available in Eagle and opened((Shown in a library folder at the Control Panel, visible as a file with an .lbr extension and by clicking on the small triangle preceding the filename which unfolds the folder)) one will observe that a selected device or device set has primarily three entities:
+In the Control Panel within Eagle, library folders contain files with IC manufacturers, group of generic components or group of specific symbols (Like ground, power supply and drawing frames). Eagle treats each of these files as a library, containing devices ((These are components having a link between one or more Symbols and a Package)) or device sets((i.e. equivalent components sharing the same functions but having different packages and/or symbols, like a LM555D and LM555N\\ Please note that the definition of device sets is not very clear. A closer match would be device breed, which specifies more precise that devices which belong to the same breed share a common function.)). If a library is available in Eagle and opened((Shown in a library folder at the Control Panel, visible as a file with an .lbr extension and by clicking on the small triangle preceding the filename which unfolds the folder)) one will observe that a selected device or device set has primarily three entities:
-  * device: The real component, residing in a specific package with a specific symbol.
+  * Device: The real component, residing in a specific package with a specific symbol.
-  * package: Footprint in the layout
+  * Package: Footprint in the layout
-  * symbol: Drawing in the schematic
+  * Symbol: Drawing in the schematic
-Each of these entities characterize a specific aspect of a component or component breed. Please see the following example:
+Each of these entities characterize a specific aspect of a component or component breed. The image below shows a selected library with the 555 timer IC component breed (Or in the Eagle jargon called device set).
 |  {{http://www.auditeon.com/xyz/projects/20110610_dev_lib_p01.png?404x260}}  |
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 A device, device set, package or symbol can be removed from a library via the Library menu. To remove, you must open that device in the type Library Editor window first and then select from the menu the option Library -> Remove... and enter the name which refers to what you want to delete. (The package, symbol or device.) If it stills shows up in the concerning Library in the Control Panel, save the Library with the removed item.
+===== Links and more information =====
+  * [[http://learn.adafruit.com/eagle-tutorial-how-to-add-a-new-package-to-a-component/]] How to add a new package to an existing component