The sendEmail () function is responsible for triggering the email alert when an object is detected. A secure Wi-Fi client is ...

The hardware setup shown below includes the Arduino Uno R4, a DHT11 sensor, and the built-in Wi-Fi for email alerts. The DHT11 is connected with VCC to 5V, GND to ground, and the data pin to Digital ...

Robotics technology that not only performs simple tasks but also supports humans in all their tasks is among the key technologies in industrial manufacturing. But this requires that robots be able to ...

Tired of condensation wrecking your shed tools or greenhouse gear? I built a no-frills ESP32 + DHT22 node that wakes every 15 minutes, grabs temp/humidity data, beams it over Wi-Fi, and sleeps—running ...

The ultimate piece of flight gear.

An international team of scientists led by the University of Bath has developed a new catalyst—a substance that speeds up chemical reactions—that uses sunlight to break down so-called "forever ...

Key Points Motion sensor lights help to save on energy by automatically turning the lights off when not in use.They are most effective for lights accidentally left on often, like outdoor lights and ...

Those old Wii Remotes you have collecting dust still have life left in them. With a little creativity, you can use them in ...

A nanomechanical sensor once limited to the lab can now detect ultrafine airborne particles, closing a key gap in pollution monitoring and climate science.

The meat of the Even Realities G2 glasses is what the user sees. It’s the experience of wearing a pair of glasses that shows ...

Botanical sensors are turning greenery into living data networks while monitoring plant health and optimizing yields.

A team of engineers at Rice University has developed a tiny new sensor that could dramatically improve the safety of self-driving cars on public roads. This is a compact, low-power millimeter-wave ...