What pins is the shield using exactly?


#1

I got one of these to work with a stepper motor, but actually I have two and I want to stack them…I know that I have to pick different channels for the motors, like {2,3,8,9} for one and {4,5,11,12} for the other…but i’ve seen in the forums that the shield also uses A5?? So I want to know, what channels is it actually connecting to in the arduino and which just go straight thru?? I’ve seen the diagram in page 9 but I’m not even sure how people figured out that A5 is being used. I’m gonna connect the second board with jumper wires. Your help is greatly appreciated!

Pablo


#2

Pin A5 is not being used on that shield. Just stack the 2 motorshields on top of each other and select the correct jumper placement.


#3

are you sure? some of the other threads contain questions about A5 and the diagram does also. I need to use two of these and one is working and the other is not, and I’m wondering whether this is the problem. i’ve de-stacked them and sent one A5 from one to A4 in the other, and it still does not work. I don’t understand the contradicting answers.

To de-stack them, I used jumper wire to plug the 4 channels into the other shield (obviously to non-overlapping pins), and plugged in GND and 5V together also.

Any suggestions?