In this video, I'm exploring the use of Mini PIR Sensors with ESP32 with both Arduino-based projects as well as making a movement sensor for Home Assistant by using ESPHome. The sensor is quite ...

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

I’ve been thinking about color a lot lately—what shade of lip liner accentuates my lips, what paint color would look best on the walls of my new apartment, which heel matches my favorite dress. Up ...

In this video I'm building an Arduino Heart Rate Monitor that is housed in a toy handle in the style of the Star Trek Tricoder. The device uses the PulseSensor with an Arduino Pro Mini and an OLED ...

Chemists in South Korea have created a stable color-changing sensor that displays an easily quantifiable response to the pH of its surroundings. Published in Microsystems & Nanoengineering, Dong-Hwan ...

I can't stand opening the Microsoft Store. It's slow to load, confusing to browse, and full of ads for things I don't care about. Luckily, thanks to a new feature, I don't have to open the Microsoft ...

The designers at Lightspark write: Humans can’t reliably recall colors. This is a simple game to see how good (or bad) you are at it. Dialed shows you a color for 5 seconds, then asks you to recreate ...

Light aircraft often use a heading indicator as a way to know where they’re going. Retired instrumentation engineer [Don ...

The bright colors of the sponges have a meaning tied to their intended use. Here's a guide to sponge colors and when to use each type. David lives in Brooklyn where he's spent more than a decade ...

You probably aren't using Windows 11 to its full potential. We reveal the Copilot AI features, customization tips, File Explorer tweaks, multitasking tools, security options, and more that you're ...

The artist gave prominence to the color during a happy period that produced some of his most famous works. But it can have many different associations, a new exhibition shows. By Nina Siegal Reporting ...