Hi,
I want to know, if i connect a output with a input of the same fez panda 2, can It domage something ?
Thx
Nope, but why?
I am constructing a robot and I want receive a signal when a wheel do a turn of 360degree.
So I placed a piece of metal on the wheel and two wires on the body of my robot
Connect one wire with input pin pulled up. The other wire to ground. Open state on your pin will be high and closed will be low.
Good idea thx 
You are welcome!