A small portable device featuring timer, clock, and calendar functions, equipped with a simple and functional interface and a truly long battery life.

Total mastery over the pinout and functionality of the PCA9306 for conversion of logic levels from 5V to 3.3V. A step-by-step interfacing diagram for the PCA9306 to Arduino UNO. Working example with ...

Techy dad creates easy, tactile, Smart TV control system fed by colorfully labelled floppy disks.

The original library was developed by JonHub, but never added to the Arduino Library Manager. The Libraries Manager now hosts the code via this repo. The Filters library implements several useful ...

Tested and works great with the Adafruit INA237 and INA238 Breakout Boards. These chips use I2C to communicate, 2 pins are required to interface. Adafruit invests time and resources providing this ...

They'll also be better suited to your needs - win, win ...

Here’s something fun from [Chad Kapper] over on HackMakeMod: Escape Room Lockbox with the Cheap Yellow Display. You may have heard of the “cheap yellow display” (CYD), so-called due to the board’s ...

A critical-severity vulnerability in the vm2 Node.js sandbox library, tracked as CVE-2026-22709, allows escaping the sandbox and executing arbitrary code on the underlying host system.

With loudspeakers, an important parameter is the frequency at which their cones resonate. This clever Arduino-based tester ...

Want to turn your circuit ideas into real designs? Check out a free tool that makes drawing schematics, adding symbols & preparing PCBs fast.

I'm not a programmer, but I tried four vibe coding tools to see if I could build anything at all on my own. Here's what I did and did not accomplish.

A hands-on test compared Visual Studio Code and Google Antigravity on generating and refining a simple dynamic Ticket Desk ...