There is a large base of users out there. It would take a really really really good reason to change the pinout.
But I find it hard to imagine that anyone is happy with the odd pin spacing between pins 7 and 8. I would certainly choose a board with proper .1 spacing for any of my future purchases if it were available.
We should start a petition against the half pin spacing. I've just seen a tutorial somewhere on how to make your own arduino shield.. starting with drillingin-between holes on perf-board :-?
Not to steal the thread, but is this really something people would like?
I put it on the Bugs+Suggestions voting page on the playground, but am afraid that it will get lost there.http://www.arduino.cc/playground/Main/SuggestionsBugs
Not to steal the thread, but is this really something people would like? A Diecimila clone with the second digital header on 0.100" centers? Seems to me like this should be an easy enough modification to any of the Freeduino clones. If, lets say, 8 people PM me and express their interest, I'll make one.
Fortunately most freeduino variants i know are breadboard versions. No chance for whatever odd spacings there. I don't think the problem is creating a 0.1'' freeduino alternative. The official boards still are and should be the standard in my opinion. now, if i were to produce or release the files for a shield design i'd have to decide whether i want to make it "arduino compatible" or not by making it DIY-friendly.
The spacing on the boards was a mistake. It was like that (I believe) before the shields even existed, and we've regretted it since, but each time didn't want to break compatibility. We don't even make / sell that many shields, and, anyway, a standard spacing would have made it easier to develop new shields, so it probably would have been better off from a business point of view. In any case, it wasn't intentional.
The Arduino team got so many decisions right that I am sure we won't begrudge you this one mistake. And its never too late to improve things, If your not selling many of the old shields perhaps it wont be difficult to switch to new ones evenly spaced
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