For the residents who live in rural-areas, limited water-availability is a very common problem. Therefore, many people install a water tank on the roof of the building. The water, stored in a water ...

Sometimes we need a non-contact liquid level sensor. There are several ways to build that, but the easiest is to try an optical liquid level sensor. You may already have an idea in mind since you are ...

An RV is somewhat self-sufficient. Your RV has an on-board fresh water supply, as well as holding tanks to capture the gray water from the sinks and black water from the toilet. It’s important for the ...