I switched up to using B.1 as an input and B.2 as an output along with the portb.1=portb.2 and it worked well. After about 13 seconds, however, it stops working. Is this due to the fact that I'm relying on the internal oscilator or is there additional code that I don't know about. Also I looked over 12.0 and I see that PORT A pins would need additional lines of code to work, but I'm not fully understanding what their saying. Do the pins for PORTA have to be used for A/D conversion?