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 ...

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

Back in 2024, Renesas first released the RA0E1, an ultra-low-power Cortex-M23 MCU designed for cost-sensitive applications, followed by the RA0E2, with ...

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 ...

Yeckel] recently put the finishing touches on an ambitious implementation of a simple D-STAR (Digital Smart Technologies for Amateur Radio) transceiver using some very accessible and affordable ...

Small, smart and beginner-friendly, the SeeStar S50 takes the hassle out of stargazing, delivering detailed nebula and galaxy ...

I've reviewed security systems from all major brands. Here are my most important recommendations when you're ready to set up your own.

Simple toys that one can make with a 3D printer include a card-sized crossbow, a stacking puzzle game, and a one-piece glider ...

The camera in your pocket is hiding tech that was originally made for outer space. The sensor that is now widely used in most smartphone cameras, compact cameras, and mirrorless cameras – the ...

You may or may not be reading this on a smartphone, but odds are that even if you aren’t, you own one. Well, possess one, ...

It looks like a cute little dolphin-themed toy, but the Flipper Zero is a surprisingly powerful learning tool for hacking. Here's how I mastered mine—and how you can, too.

More than two dozen contributors to the manual criticized the deletion of a chapter on climate science by the Federal Judicial Center. By Karen Zraick Leticia Carvalho heads a global authority that’s ...