I've come up with a scheme for building reusable parts for my projects. It involves a bit of board stacking, up to 4 high in some extreme cases. I've been having a hard time finding a suitable board to board bus connector. I'm going for something similar to the stacking capabilities of the PC/104 platform, but all I need is 8-10 pins and a smaller price tag.
I'd like the PCBs to stack right on top of each other with a solid interconnect between them. To give you an idea of what I'm talking about, think about a female header receptacle with 0.75" or longer solder (or wirewrap) tails that will connect to a similar board below. The bottom-most board would be the main MCU board and would not have these long tails underneath.
I've tried wirewrap SIP sockets, but the wirewrap pins don't fit into the sockets. If anyone has figured this out, I could certainly use the help to find a suitable connector. I'm guessing the max current through the pins will be less than 1A, so they don't have to be "purpose built" for this application.
I was thinking a standard female header on one side, and a surface mount male header on the other. That's a bit of soldering work with plenty of room for gross alignment issues. Any other ideas?
Edit: Currently the boards are designed with a 1x9 bus connector. That could be changed to accommodate a good solution.