hi darudude... yeah, i only pinned out 42 to keep the form factor, and i didn't want to go up into the power bank, since i was thinking it might be confusing if i accidentally plugged something into a digital pin that should have been grounded, or vice versa (in case it shorted...). otherwise, for some funny reason i've never been able to personally run out of analog pins in any project i've ever done, so that's why 6 not 8...