An automatic toll gate system using Arduino revolutionises traditional toll collection by eliminating manual intervention.

Check out the latest stories, videos, and podcasts from the week of Dec. 8, 2025. During research for a newly opening museum ...

Acid rain sucks, particularly if you run a fancy university with lots of lovely statues outside. If you’d like to try and ...

Photoplethysmography (PPG) is an optical sensing technique that measures blood volume changes and underpins devices ranging ...

Build festive decorations using Arduino and Raspberry Pi with these five creative holiday projects and video tutorials ...

Researchers have developed a precision magnetometer based on a special material that changes optical properties in response ...

This article explains an upgraded smart solid-state AC switch system that uses microwave Doppler radar instead of traditional ...

I had this idea of building my own bicycle lighting system totally personalized, the lights would have the exact lighting ...

Optical sensors are a broad class of device for detecting light intensity. This can be just a simple component for notifying when ambient light levels rise above or fall below a prescribed level, or a ...

Chris Wedel is a fan of all things tech and gadgets. Living in rural Kansas with his wife and two young boys makes finding ways to stay online tricky — not to mention making my homestead smarter.

Synthesis of nanostructured cubic phase SnO 2 thin film and its trace-level sensing of CO gas This study presents a cubic phase SnO 2 thin film gas sensor with ultra-high CO sensitivity and 1 ppb ...

If you aren't willing to haul around a heavy SLR or mirrorless camera but still want something better than a smartphone, check out the top point-and-shoot cameras we've tested. Images, and the devices ...