@ -6,33 +6,33 @@ The Temperature Control Laboratory (TCLab) is an application of feedback control
## PCB Design
El diseño de la PCB se realizó en el software ´LibrePCB´ version ´1.3.0´ en donde se tuvieron de crear dos bibliotecas propias para componentes (DC Barrel jack y Transistor TIP31C), que no se encontraban predeterminados dentro del software.
El diseño de la PCB se realizó en el software `LibrePCB` version `1.3.0` en donde se tuvieron de crear dos bibliotecas propias para componentes (DC Barrel jack y Transistor TIP31C), que no se encontraban predeterminados dentro del software.
### Create Libraty Elements
La creación de bibliotecas no es tan dificil y saber hacerlo tiene la ventaja de poder copiar el diseño del simbolo, encapsulado o pads de otros componentes para crear una nueva biblioteca de cualquier otro componente electrónico. A continuación muestro los pasos para hacerlo.
* The [New Library Element] toolbutton (or ´Ctrl´+´N´) in the library editor is the entry point for every new library element. There you can choose what kind of library element you want to create:
* The [New Library Element] toolbutton (or `Ctrl`+`N`) in the library editor is the entry point for every new library element. There you can choose what kind of library element you want to create:

#### Concept Overview
A library consists of several different elements:
*Component Category*
* *Component Category*
These are basically "metadata-only" elements used to categorize the "real" library elements in a category tree.
*Symbol*
* *Symbol*
A symbol is the graphical representation of a component (or parts of it) in a schematic. It consists of electrical pins and graphical objects like lines.
*Component*
* *Component*
A component basically represent a "generic" kind of electrical part. it's not a real part which you can buy, it's just theoretical.
*Package Category*
* *Package Category*
Exactly the same as the component category, but for packages instead of components.
*Package*
* *Package*
As the name suggests, package represent the mechanical part of a "real" electronic part. it contains the footprint with their electrical pads and graphical objects which is then added to boards.
*Device*
* *Device*
The device now represent a real electronic part which you can buy.