what is the best way to miniaturise the circuit for this type of use?
once I have built and debugged the program, can it be burnt to a PIC or other device...
...and become 'run only' (compiled code, I guess)?
Most Arduino boards use an Atmel AVR processor. A fine replacement for the PIC.
Thanks for the response Coding Badly (I have to admit that your name made me smile!)
By 'circuit' I meant the entire Arduino Duo board I've ordered (I now see I was not clear enough, sorry!)
Do I understand correctly that once I've developed the code on the Arduino Duo, I can transfer / copy it to an Atmel AVR and run it on that...
...adding any external circuitry necessary (e.g. LEDs, voltage regulators, inputs, etc.)?
Do you know of any 'idiots guides' to this process, please, that you could direct me to?
I'm off to do some more reading.........