This article will help you build a simple Arduino-based DCC system. Growing up in the 1980s I was living the dream. I had an ...

A standard telephone keypad, with four rows of three keys each. The top row consists of 1, 2, and 3, with keys continuing down in order until the last row, which is usually *, 0, and #. Such a keypad ...

I'm the Editor-in-Chief of PCMag.com and the Vice President of Content for Ziff Davis. I oversee the editorial operations of PCMag and ExtremeTech.com, leading more than 65 writers, editors, and ...

Abstract: Automated color-detection object sorting has revolutionized several industries, including manufacturing, logistics, and recycling. The systems that use Arduino UNO microcontrollers for color ...

Keypad phones, believe it or not, are still in use, and there is a surprising amount of variety to choose from. Some of the phones include 4G connectivity, cameras, and are built to last. If you're ...