It’s a 12 Volt DC unit designed just for Schlage commercial door ... To read each button push, the Arduino brings one keypad input line high and checks the voltage of the four output lines in ...

The 12 button keypad is a 50 year old design that remains on 95% of phones sold today. It serves as a barrier to discovery, access and use of wireless devices and mobile data services.

The OONTZ uses a 3D printed case, a 16 button keypad, an Arduino Leonardo, a monochrome driver, and a few potentiometers. It's actually a pretty simple thing to build yourself provided you can the ...

He said that the traditional 12-button keypad had been in use for 50 years and was showing its age. "It's old, tired and a barrier to use," he said. "Interfaces are an unappreciated piece of the ...

The strap-on projects a 12 button keypad onto your finger joints, dubbed "knuckle buttons", and you type with your thumb. Probably as convenient as the wired "handsfree" sets for cellphones, which ...

Sometimes clunky old technologies hang around much longer than the problems they originally solved. The 12-button alphanumeric telephone keypad is a prime example. The letters on each key–“ABC ...