(keypad: columns and rows switching) So now you can see how the button presses can be translated into electrical data for use with a microcontroller. We can now start the real experiment with as ...

For some jobs, a numeric keypad is essential for proper workflow. However, most laptops and keyboards with built-in number pads don’t offer the most ergonomic setup. […] ...

For some jobs, a numeric keypad is essential for proper workflow. However, most laptops and keyboards with built-in number pads don’t offer the most ergonomic setup. […] ...

An Arduino Leonardo is pressed into service for this hack. With its USB HID capabilities, it’s perfectly suited for custom keyboard builds.

For some jobs, a numeric keypad is essential for proper workflow. However, most laptops and keyboards with built-in number pads don’t offer the most ergonomic setup. […] ...

This Arduino BASIC interpreter will make a really fun one-day project if you’ve already got the parts on hand. [Usmar A. Padow] put together an Arduino Uno, SD card, four line character LCD, … ...

Have some numeric passwords to hide? Top secret numerical strings to enter while out in the wild? Well, don't let those shifty-eyed data thieves get the ...