1) Form Factor

Submitted by krich on June 30, 2008 - 2:54pm.

 

 

First, I decided on a physical form factor. If I was going to connect multiple modules together, it would be nice if they were all of a "standard" size. I picked a 2" by 3" PCB dimension for the AVR baseboard and for a large module. I picked two other sizes for smaller modules, 2"x1.5" and 1"x1.5". (see the first attached graphic "Module Sizes.png")

 

This effectively gives me a full size, half size, and quarter sized modules. It also breaks the AVR baseboard into what I like to call "quadrants". I've labeled the quadrants A, B, C and D.  Each of the modules that I've built are built specifically for one or more quadrants. You'll see why when I go into detail on the ISP and Serial modules.

 

Module Sizes

 

 

I guess there's not much more left to say, so let's move on to the board to board connectors.

 

 

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Module Sizes.png36.75 KB