I'm planning out a very simple circuit using an LED, capacitor, switch and a battery.
The Idea is that the LED is off until something "bumps into" the circuit. At this point it should light up and slowly dim out.
I could use a microcontroller, but it would be nicer to be able to solve it with just a large capacitor and something that can trigger it.
Is there such a thing as a switch that triggers (like a reed?) on impact?
I'm grateful for any other ideas or pointers on the circuit!