Elo everyone, just got a cheap little wind up dynamo torch a little smaller than a pack of cigarettes am thinking if i change the switch to a momentary button and swap the led lights for a 510 thread i might have a small win. Got to pop it open and meter it yet but I'm pretty keen on starting this little project and sharing the results here pending interest and if i can get the right help as i don't know a whole lot about about the electronics i may need (probably just a resistor) like a burn protection circuit to cut out after 5 seconds or something like that. looks exactly like the one pictured here...