The author built a low-cost landing gear warning system for their aircraft using a lidar sensor and an Arduino microcontroller after a near-miss incident. The system uses a lidar sensor to measure ...

Columnist Halsey Blocher has a weird experience reminiscent of an Edgar Allan Poe tale involving things that go beep in the night.

If your smoke alarm keeps waking you up for no reason, here's what's going on -- and the maintenance that can stop it.

One of the most common sounds in the modern world is the beep. From microwaves and cellphones to computers and backing-up trucks, this high-pitched alert pings us from every direction. But how is it ...

The computer first beeped almost 50 years ago. It hasn’t stopped since. And now it’s not alone. Pagers beep. Answering machines beep. ATMs beep. Elevators beep. Phones beep. We have warning beeps, ...

In order to study how young fish such as salmon are affected by swimming through hydroelectric dams, scientists have traditionally equipped them with surgically-implanted acoustic tracking tags.