decided to see if I could build an Arduino like board
to use a pre-installed boot-loader (hey 1 step at a time)
headers on 0.1" pitch
auto-reset so I can upload sketches with minimal hassle
not trying to be shield compatible so pins subtly re-arranged to make construction simpler
I used 0.1" perf-board that has three holes at a time joined together
attached are the Eagle schema, board layout and final result
oh - and it works!
default blinker sketch came up when I powered it on
managed to upload a sketch - and that works too!
relieved - moi!?!?