(SOLVED) Break circuit = Make circuit?
Examples of uses of this would include turning an LED on when there is no light on an LDR and turning it off when there is light, rather than the other way around, along with turning an LED on when a circuit is broken by opening a door.
Apologies if I have not been clear enough.
Is this possible?
EDIT: Thanks to NachoMahma, I have it set up with a transistor. I will post a schematic if anyone is interested.