Has Anyone Here Built a Simple Water Leak Alert System for Their Home?

I’ve been thinking about how many expensive home repairs start with something really small a slow leak under a sink, a damp basement corner, or a pipe that goes unnoticed until it becomes a much bigger problem.

For those of you who enjoy DIY electronics or home automation projects, have you ever built or tested a water leak detection system? Was it reliable enough to catch problems early, or did you end up using a commercial solution instead?

A friend of mine recently had a minor plumbing issue that turned into a major cleanup because no one noticed it for days. It made me realize how useful even a basic moisture sensor could be.

I’ve also been reading about water damage restoration Baltimore services, and one thing that stands out is how often professionals mention that early detection could have prevented thousands of dollars in repairs. That got me wondering if a simple sensor setup is a worthwhile weekend project.

Would love to hear what hardware, sensors, or microcontrollers you’ve used and whether they’ve actually saved you from a costly surprise.