I have a pretty simple question. It just confused me.. I want to hook a LED through a resistor to terminal 3 (output), on a 555 timer, and have in flash once. So basically as soon as you connect power to the 555 I want the LED to come on, but after the cap has drained I don't want the LED to come on again until power is disconnected and connected again. Could a 555 timer do this? Or will I need something else.