Hello everybody I need some help with a project, I am trying to build is a sound activated alarm. Right now I have a power module, sound trigger and a buzzer. When I have the sensitivity set where I need it the buzzer is powered for 3 seconds and shuts off. I need an alarm that will stay triggered until I physically shut it off. I was looking at the latch but I am worried that the sound trigger might turn the latch on and off. What I need is a one way latch if that makes sense.
I was also thinking about the delay so I could turn the alarm off before the buzzer goes off. I’m not sure if the delay would work in this situation. The delay description says it sends audio signals.