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 ...

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 ...

There’s a well-known movie trope in which a hacker takes control of the traffic lights in a city, causing general mayhem or ...

Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. QR codes are designed to be used as quickly and easily as possible ...

Mexico’s most wanted drug lord, Nemesio Oseguera, better known as “El Mencho,” has been killed in a military operation, Mexican officials confirmed on Sunday. The operation comes after growing ...

The Mexican state of Jalisco will remain under a “code red” Monday, with public transport and schools remaining closed, its governor said Sunday. The announcement follows a day of violence in the ...

For those of us who weren't paying attention, over the last few years, scientists around the world have been one-upping each other in a bid to create the smallest QR code that can be reliably read.

Researchers at TU Wien and Cerabyte created the world’s smallest QR code, measuring just 1.98 square micrometers. The record has been officially verified by Guinness World Records, making it 37% ...

Just how small can a QR code be? Small enough that it can only be recognized with an electron microscope. A research team at TU Wien, working together with the data storage technology company Cerabyte ...

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