Hi folks, I'm trying to build a timer circuit that will be triggered a signal from a motion sensor. I'm having trouble finding any circuit designs that would allow me to have a timer, but allow the timer to be reset every time motion is detected.
Having the timer reset is kind of important, as most 555 circuits I've seen do not respond to new triggers until the timer completes. So if the timer controls the lights, the room can potentially go dark with someone in it.
What ideally should happen is that every time motion is detected, the timer period should restart. How can I make that happen?
Having the timer reset is kind of important, as most 555 circuits I've seen do not respond to new triggers until the timer completes. So if the timer controls the lights, the room can potentially go dark with someone in it.
What ideally should happen is that every time motion is detected, the timer period should restart. How can I make that happen?