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 ...

The I2C (Inter-Integrated Circuit) bus is a synchronous serial communication protocol that allows multiple electronic components (sensors, displays, memories, etc.) to be connected within the same ...

The ARDUINO IDE associated with the ARDUINO board uses specific numbering, assigning numbers from 0 to 19 to digital pins 0 to 13 and numbers A0 to A5 to analog pins. GCBasic directly manipulates the ...

The Waveshare 1.69-inch IPS touch LCD is a 1.69-inch rounded display with 240×280 resolution and a 262K color range. The display driver (ST7789V2) and touch controller (CST816T) are integrated ...

We may receive a commission on purchases made from links. If you have an interest in electronics and have been hanging around DIY tech forums for a while now, chances are you already know what an ...