I didn't realise that was how it worked I solved it the second after I posted. I forgot how a relay worked, and thought it would be outputting the 5v from the Pi (I realised this would be useless). Thanks!

I would like to control some 6v motors using my PiFace's relays. Where would I put my 6v supply, as to ensure I don't destroy my Pi? I have disconnected JP4, but I'm still scared of connecting 6v to screw terminal 0v 5v, as 5v is coming out of it, making me think it's connected to my Pi. What do you...

I forgot to mention that I measured the power being used by the Pi, and it averages around 0.4A (400mA) to 0.5A (500mA). I think the batteries must be faulty. How long would normal AAs last? The average AA is 500-1000mAh, so if I said my AAs were 1000mAh, would it last around 2 hours?

I have created a circuit using a 5V regulator (LM7805), however it only lasts one hour on 2500mAh NiCad batteries. Could this be due to the condition of the batteries (they are losing charge)? I had a screen, usb keyboard and a WiPi plugged in at the time. With normal AAs, could I expect it to last ...