Thanks again for all your help folks.

Sure does help a newcomer keep going with experts around

One very quick question though - can anyone recommend where the best place would be to get a serial LCD display from at a reasonable price in the UK? I'm probably looking for a 16x2 but any suggestions are welcome!
I tried to order from the Crownhill website last night but the ordering section appears to not like my card number or something and keeps looping back to the payment options page and blanking out the previous values???

I'm looking at a serial LCD as I want to use most of the other pins on the MCU for other functions, but as always I'm open to suggestions.

Leigh