Build a water leak detector
It happened to me, it may happen to you too someday, maybe it already did; I am talking about a leak in your home’s water supply system like an open tap or a broken joint. Whereas an open tap is usually found quickly, a leak can go unnoticed for weeks or even months, especially if it is hidden in a wall or under a floor. The result is water damage and a high water bill. Building and installing this clever device may prevent future spills and unpleasant financial surprises.