Switch question
Thanks, I figured I could use the 555 but I'm really trying to keep this as simple as possible (maybe the 555 is ?)
Basic idea is simliar to the timer on a washing machine. Turn it to the desired time, push the switch and circuit is closed for that duration.
Same idea just much smaller and only need run for 10s or so.
But...if a switch like this doesn't exist then it doesn't exist.
In that case, having not yet played with the 555, a couple of questions:
-Do I need to hold pin 2 high (1/3V) or is that done internally ?
-What is the best (simplest) way to generate the trigger pulse? I'm assuming a momentary contact switch but how to I make the pulse negative ?
Thanks for bearing with me. I'm new to this stuff.
Marc