fungus:
Ummm... that may be smaller from the 'top' but it more than makes up for it in height.
not quite. that photo over 10yrs old and instead of taking new ones heres some measurements:
pro: 19x33x12=7524 SOCKETED " chip with lots of pins soldered to it": 18x34x10=6120
so quite a bit smaller than pro. but not a true comparison considering that there are twice as many USEFUL pins available and it IS serviceable so:
non-socketed "chip with lots of pins soldered to it": 12x34x10=4080
and regarding my original point about 14pin vs promini exactly half that=2040
so about 1/4 promini size. forced to use a pcb it will be slightly larger. still less than 1/3 promini. true there are duplicate pins but unlike promini they are USEFUL duplicates for not only interfacing but also powering sensors, optos, servos, motors, etc etc.
true not everyone needs that kind of i/o but unused can always be ignored and i estimate will work with 90-95% of the applications out there. sorta like promini or uno but quite a bit more compact and efficient. and a lot lower cost.