Sonar is a great sensor to add to any small-scale robot project. And for a couple bucks, the ubiquitous HC-SR04 modules make it easy to do. If you’ve ever used these simple sonar units, though, you’ve ...
Chinese scientists have shrunk the size of a high-powered phased array sonar system into something compact enough to fit inside a shoebox, enabling it to be mounted on a small unmanned submersible.
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 farily simple, ...
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