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 ...

The $180 Aurzen Eazze D1R Cube is a basic, entry-level projector, but the Roku interface makes it a pleasure to use.

A resistor in the cloud is worth two in the hand.

At MWC 2026, the company also showed off a dual-screen Yoga Book with 3D capabilities, and the Legion Go Fold—a gaming handheld with a folding screen that converts into a mini laptop.

By building Nxtpaper over AMOLED, TCL says its phones can now achieve more vivid visuals while retaining the level of eye ...

This small inductance-meter is what every beginner in electronics should have to start in electronics. Commercial multimeters ...

Soldered Electronics has made ESP32-based e-paper displays for years, starting with the launch of the Inkplate 6 in 2019. The ...

Ask the publishers to restore access to 500,000+ books. An icon used to represent a menu that can be toggled by interacting with this icon. A line drawing of the Internet Archive headquarters building ...