A keypad is one of the most commonly used input devices in microprocessor applications. In a standard keypad wired as an X-Y switch matrix, normally-open switches connect a row to a column when ...

We’ve featured loads of IR Arduino projects and they are all exciting and unique. The projects spring from a specific need or problem where a custom infrared remote control is the solution. [Rick’s] ...

One of the oldest features that made Android stand out compared to the competition in its younger days was the fact that users could install third-party keyboards. While this wasn’t a huge thing for ...