The subject says it all but I'm afraid my ignorance is getting the best of me. From what I can understand I need a "flip flop" (or a relay?) but I'm not sure about that or where to start. I don't care at all to do the legwork (I *want* to, believe me), but I'm a bit overwhelmed.
Here is what I want to do :
Power the whole thing with a 9V battery. Have the PIR sensor hooked up directly to the power source and when tripped (the signal pin goes low), I want to power a microcontroller for a few seconds, then turn it off leaving the PIR sensor ready to go again. Ideally the microcontroller itself could shut itself down after it completes its tasks.
I'm lost and don't know where to start and the only electrical engineer I know is on vacation ;-)
Is a "flip flop" what I need and if so, can anyone give me an idea of how to build one?
Thanks!
Here is what I want to do :
Power the whole thing with a 9V battery. Have the PIR sensor hooked up directly to the power source and when tripped (the signal pin goes low), I want to power a microcontroller for a few seconds, then turn it off leaving the PIR sensor ready to go again. Ideally the microcontroller itself could shut itself down after it completes its tasks.
I'm lost and don't know where to start and the only electrical engineer I know is on vacation ;-)
Is a "flip flop" what I need and if so, can anyone give me an idea of how to build one?
Thanks!