Electronic Circuits and Projects Forum

Sorry I wasn't specific http://www.liquidware.com/shop/show/...tenderShield+X
this is a triple wide but it is the same as a double with one more added on.

Oh woops, that is one for a non arduino,
here is an arduino one,
http://www.liquidware.com/shop/show/...ExtenderShield

Sure, you can stack them any which way you want, along with all the parasitic capacitance/inductance/resistance and cross-talk to go with it. It depends on what you stack. This doesn't create new pins so various devices won't necessarily work together just because you have the extenders, you'll have to recompile the code to available I/O lines which are dependent upon the hardware the code uses as well.

For very low speed devices (relative to system clock speed) you won't have issues generally, as the frequency of whatever signal is passed on a particular line goes the complexities increase really fast.

Alrighty, thanks for the answer, I just ask because they don't make the correct shapes for what I am trying to do, although it is more of a looks-thing rather than need.

You'll probably be fine, but as a general rule it doesn't matter how good it looks if it doesn't work.