I am very inexperienced at wiring, and electricity in general, but was hoping to find some assistance in this forum. I am looking for a fairly inexpensive way to wire an LED to turn on when pressure is put on some type of sensor (not sure what would be needed). When there is no pressure, I want the LED to be off. For example, if you can imagine a spring holding up a piece of wood, and when something is placed on top of the wood, the spring bends, allowing for two wires to touch and light up the LED. Like I said I am very inexperienced and do not even know if this is a possibility, just an idea. Some specific questions: Is there any way to wire an LED so that pressure creates an electric current without the use of a battery or power source? and if so, What materials would be needed, and where could I find them? I appreciate any and all advice, and look forward to possibly using your assistance for my first electrical project.