If you want to add a keypad to your Arduino project, the options are pretty limited. There’s that red and blue 4×4 membrane we’ve all seen in password-protected door lock projects ...

Once the rows, columns, and other layers were glued up, [Peter] could connect this keypad up to a microcontroller. The code is very easy with the Arduino keypad library, and should stand up to the ...

perfect for when you're just starting out with Arduino programming. If, however, you find this too basic, there's a second version of the project with twice as many lines of code. In this version, you ...

The Hirsch ScramblePad keypad/reader provides a very high security approach to access, because the credential (ID code or PIN number) cannot be accidentally shared with, or stolen by, onlookers. Each ...

Learn more› By Geoffrey Morrison If you want to use electronic devices in a different country, you’ll probably need a travel plug adapter. After spending more than 30 hours researching and ...

Although Windows 11 can detect and configure network adapters automatically, you may still need to perform additional steps to connect to a wireless network, enable specific features, review ...

Apple’s Magic Keyboard with Numeric Keypad is expensive and Mac-only, and it can pair with just one device at a time. Microsoft’s Surface Keyboard is available only with a Windows layout and ...

A plug-in card in a desktop computer that performs graphics processing. The display adapter determines the maximum resolution, refresh rate and number of colors that can be displayed, which the ...

A power supply for electronic devices. Also called an "AC adapter" or "charger," power adapters plug into a wall outlet and convert AC to a single DC voltage. Computers use multiple DC voltages ...

USB Wi-Fi adapters are a simple and inexpensive solution to the problem, often bringing better speeds and stability. Want to enjoy the benefits of Wi-Fi 6E like faster speeds, lower latency ...

This is the same as the Bluetooth feature. If your computer has a malfunctioning Bluetooth driver, but you want to use another Bluetooth adapter, you have to install the replacement driver.

Planning a trip abroad? Wherever you plan on going, you need to bring the best travel adapter with you to stay fully charged and powered while you're away. Technology defines travel. It used to be ...