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Author Topic: What is a "shield"?  (Read 590 times)
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I have read over and looked at the pictures of all Arduino boards. Some are, however, marked as a "shield". What is meant by the term "shield" in this context? Are they for added components to be controlled by the main board - a substitute for, say, a solderless prototyping board? Are they to be "piggy-backed" on a main board - somehow plugging in on top?
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A shield is an adapter of various types that is made to plug onto the top of an arduino.
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"Shield" is the name given to anything that plugs in on top of the Arduino. 

Here's some examples: http://shieldlist.org/
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Shield is a bit misleading as "shield" it implies that it "protects" the Arduino.
What a shield does is add to the functionality of the Ardunio board, and in most cases making the Arduino more vulnerable to outside influence.

I believe the intent was for the Shield's to have all necessary protections built in so miss-use would not damage the Arduino, but often this is not the case, care must be taken when using shields such as correct polarity and current limiting resistors.

"Adapter Card" would be more apt.

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I believe the intent was for the Shield's to have all necessary protections
No that was never the intention.
It is called a shield simply because it goes over the arduino board. No protection is implied.
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I believe the intent was for the Shield's to have all necessary protections
No that was never the intention.
It is called a shield simply because it goes over the arduino board. No protection is implied.

So it's aesthetically named and not functionally named - figures.



« Last Edit: January 09, 2012, 03:03:41 pm by Jassper » Logged

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"Shield" is the name given to anything that plugs in on top of the Arduino. 

Here's some examples: http://shieldlist.org/
Thank you. The pictures made the matter clear.
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So it's aesthetically named and not functionally named - figures.
Yes like there is no cottage in cottage pie, no fun or fairness in a fun fair and no cum in a cumquat. 
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