i need a light and motion sensitive cat scaring device.
Thoughts: want to use a plug in (no batteries) light sensitive night light (these come on when it's dark) and have it power something that is a motion sensitive noise maker that would scare a cat. the point being these would go in a bathroom and i only want them to be active if the lights are out.
hopefully cheap as I need to make two of these. willing to rip apart toys or other electronics that are easy to get.
Thanks for any advice