Nick:I found an arrangement like this worked well for me.
Ah, I see what you mean, Nick. Neat trick if you've got space for the IDC connectors above the board, and you want to parallel together a load of lines across the boards.
I'm not running a standard matrix arrangement. Each 16way board has a pair of 8:1 analogue multiplexers, which are feeding a pair of analogue lines back to the motherboard. Originally, I was going to use 10way headers, so there wouldn't have been enough wires to parallel them all together (3 address, 5v, 0v, 8 analogue returns). So I decided on a star topology, where each board connects directly back to the motherboard. I later upgraded to 20way headers, but didn't change my overall topology. But thinking about it now, I could have daisy chained them together like you've done. But I think I might have struggled for space. My sensors are at the extreme rear of the manual, and the next manual up has solid wood just above the sensors. So I'm very tight for space above, but have plenty of space below (when I wire up the console, I'll do the IDC headers the other way round so the cable exits directly downwards - there's no point in prototypes if you don't learn from them ).
wave.jaco: I am very interested in some more details thereof if you would not mind sharing
Sounds like you're on a similar mission ? Do you have any particular aspects in mind ? The circuit diagram of the sensor board is pretty straightforward, as is the motherboard (which is primarily connecting the various sensor boards to the TIVA microcontroller). Happy to share these when I get a spare moment ( ). The real work happens in the TIVA software - that's very much a work in progress at the moment, so not really in a shareable state at the moment, I'm afraid. But maybe in the future ...
Mike.