Neat. I wonder how easy it would be to 'gang' these to make larger breadboards. I've used the regular ones for designs with 10's of chips and it can get pretty crowded with all of the wiring especially for buses and clock nets. A couple of these would make things far more organized.
Do you have a tracking bug for this? I could see PCIe pcb edge on the top and left with female straddle mount recepticles on the bottom and right. Another option would be something like pmod, fewer pins available but cheap and easy.
It would be nice to hear a bunch of ideas about it, because at this point I haven't given it too much thought.
My thinking is to use something like this, maybe with a separate tiny PCB to connect between both boards because I don't want to mess up the general outline of the board.
The best possible version of this that I can imagine would allow for two boards to mate in all possible directions, you might want to go with a 'slave' expansion board that ties on to the first module in E/S/W but not N, another alternative would be to physically connect them to each other resulting in immediate connections between all boards. Lots of possibilities here. Something like i^c might help connecting the boards on a very cheap bus to allow for the configuration and read-out of slave boards, higher speed interaction would require a free set of 'edges' that can be connected between adjacent boards.
