I am using 3 x XB3-24, I have 1 programmed as a coordinator(my receiver) this will control 4 i/ps to an Arduino. I have the first Xbee programmed as End Device ( my transmitter) to Use D0 & D1 they toggle O/P D0 & D1 on Coordinator fine. My 2nd Xbee programmed same way but use D2 & D3 will not turn O/P's on. i have changed IC to reflect changes, and also changed D2 & D3 to inputs
all modules have been upgraded to same firm ware
what am I missing?
thanks for any help.