thanks.
yes, i also realized if mkr logic use 3.3 and the shield may need 5v as a problem...
but this pairing of mkr1000 and the shield works with mkr2uno, and as i read, there is no any voltage translation by the mkr2uno. that is why i tought it can not be the problem.
maybe the shorter wires... good idea, i will try. thanks
by the way. i had one more idea to try, but not works: connect the 3.3V(VCC) of MKR1000 to the IORef of the shiled. as i read it shows to the shield the logic voltage of the board. or not?