wow, cheers for the replies guys, but you are both way over my head

--- i've only just finished my first circuit of blinking an led lol


Basicly, i cannot do anything with the 9v circuit, i just used that as an example, i'm really using a 12v torch on a boat.

I dont want to really join the two circuits up, except for unsoldering the switch on the torch, and adding a single component in to act as the switch.

Then my pic circuit will be able to do simple flahses of the torch, such as "SOS" etc.

Many thanks.