- Joined Feb 5, 2016
I have a small project I'd like to make for a valentine's gift. I want a pulsing LED to be inside of the gift (which would sit on a shelf, say), but I want the LED to eventually turn off before (say a minute, for example) running through the battery. So it seems like I would need an astable 555 for the pulse, but it gets triggered by a monostable 555. I haven't drawn anything out because I'm a bit out of my depth (mechanical background). I thought maybe it was as simple as wiring the output voltage of one circuit into the input voltage of the 2nd circuit, but I don't think the 1st circuit provides a high enough voltage to trigger the 2nd?