Swimming is a great way to exercise ... Obviously, the solution is an electronic lap counter, which [Peter] promptly set about creating. The build is based around an ultrasonic distance sensor ...

The facility houses a 50-meter-by-25-yard pool and a diving well, which also accommodates lap swimmers. During the short-course portion of the swimming calendar, which stretches between August and ...

"It's a lap pool basically in the living ... by what she found behind a tiny door in her new home. However, it's rare that you find an entire swimming pool underneath the floor of a living room.