Must I use Arduino board together with a breakout board?Do you have any good recommend?

[lucy Wyling]

Do I need a breakout board for Arduino projects?What's the usage of breakout board? And do you have some recommandations?

 

[Harald Kapp]

A breakout board is good for setting up your own hardware extensions. For many purposes you can use off the shelf shields.

 

[lucy Wyling]

Harald, thanks very much for your answer! I want to know whether a breakout board equals to shields you posted in that link. Could you please tell me?Thanks!

 

[Harald Kapp]

A breakout board makes accessing a (usually single) component easier (e.g. small smd components) by putting it on a pcb. A shiled is made of a somewhat more complex circuit,
The difference between breakout boards and shields is explained in the link.