In first thanks for your work ! its really fine!
I want use digital ports of grovepi for connect grove relays.
But how have more of digital port ? can we connect this card with grovepi ?: http://www.seeedstudio.com/wiki/Grove_-_Mega_Shield
If we can, how connect the 2 cards ? i2c port ? uart ? serial ? and how change the program for grovepi after that ?
i want in a same program.py have :
import (what we need)
relay = 4
relay = (board2)4
its possible ? or there is an other board to coupling with grovepi for have much more digital ports ?
Sorry for my english. thanks !