Im a novice.
I have a simple processing sketch running on a rasp pi 2.
It has 2x IO Pi Plus shields and an ADC Pi Plus shield.
When the pins are crossed with 5v from the Pi or an external battery pack it is registered correctly and I can see this activity in processing.
However the problem Ive encountered is that when using my sensors/circuits to the pins (The sensors/circuits give 5v hi/lo state gates) only pins #01 and #09 on the IO pi register any activity. The other pins dont register anything... I am correctly connecting common ground between everything.
What is happening here, what am I doing wrong and please help?