Measuring A Well With Just A Hammer And A Smartphone

What’s the best way to measure the depth of a well using a smartphone? If you’re fed up with social media, you might kill two birds with one stone and drop the thing down the well and l…

Hacked Ultrasonic Sensors Let You See With Sound

If you want to play with radar — and who could blame you — you can pretty easily get your hands on something like the automotive radar sensors used for collision avoidance and lane dete…

Humans Can Learn Echolocation Too

Most of us associate echolocation with bats. These amazing creatures are able to chirp at frequencies beyond the limit of our hearing, and they use the reflected sound to map the world around them.…

Ostsee: Russlands geheime Spionage-Flotte

Die Explosionen der Nord-Stream-Pipelines haben gezeigt: kritische Infrastruktur auf dem Meeresboden ist angreifbar, wenn man weiß, wo sie liegt. 11KM über russische Schiffe auf verdächtigem Kurs.

Solving Cold Cases With Hacked Together Gear

People go missing without a trace far more commonly than any of us would like to think about. Of course the authorities will conduct a search, but even assuming they have the equipment and personne…

Mapping The Depths With An Autonomous Solar Boat

Ever look out at a pond, stream, or river, and wonder how deep it is? For large bodies of water that are considered navigable, it’s easy enough to pull up a chart and find out. But what if th…

Supercon 2022: Alec Vercruysse Can See Through Murky Water

Detecting objects underwater isn’t an easy challenge, especially when things get murky and dark. Radio waves don’t propagate well, so most techniques rely on sound. Sonar is itself fari…

Surf Sensor Adds Depth To Finding The Ultimate Wave

To say that the ocean is a dynamic environment would be a gross understatement, especially when coastlines are involved. Waves crash, tides go in and out, and countless variables make even the usua…

Homebrew Sounder Maps The Depths In Depth

For those who like to muck around in boats, there’s enough to worry about without wondering if you’re going to run aground. And there’s really no way to know that other than to wo…

Robot Pet Is A Chip Off The Old Logic Block

When [Ezra Thomas] needed inspiration for his senior design project, he only needed to look as far as his own robot. Built during his high school years from the classic 1979 Frank DaCosta book “How…