Hello to all.
After researching all that was available on that shield I could not solve the problem.
I just want to do the wiring between the shield with an Arduino Uno from the bottom.
I can not use the top of the shield, because it simply does not fit in the box.
And also, I can not use as a shield, because I have some sensors I have to turn on the circuit.
So my question is: how to do the wiring between the shield and Arduino Uno, using only the minimum necessary pins of the Arduino?
I really appreciate any help, because I’m going crazy with this.
Photos of the shield and schematic attached.