If you’ve scavenged some random keypads and want to reuse them in a project without the hassle of figuring out the pinouts, then [Cliff Biffle] has an interface module for you. The Keypad Go connects ...

The AT-VKP-8E provides IP-based system control in environments where a straightforward keypad interface is preferred, such as standard classrooms and small meeting spaces. When you purchase through ...

Often in the use of products with keypads, one or more keys become “stuck” or are being pressed. For example, a cell phone in the bottom of a purse or in a hip pocket could have one or more of its ...

A previous Design Idea described a single-wire-plus-ground-return, keypad-to-microcontroller interface in which a single pulse represents each keystroke (Reference 1). The pulse's width is ...

If you’ve scavenged some random keypads and want to reuse them in a project without the hassle of figuring out the pinouts, then [Cliff Biffle] has an interface module for you. The Keypad Go connects ...