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 ...

The world of custom keyboards has over the years developed its work into an art form, as mechanical key switches meet USB-HID capable microcontrollers for a plethora of designs as individual as their ...

Matrix keyboards are commonas an input device in microcontroller-based projects. A conventionalway of connecting a matrix keyboardto a microcontroller is to use multipleI/O pins of the MCU. The MCU ...

Annoying though they can be, if you play any kind of instrument, you will definitely benefit from using a metronome. While many of them thock or otherwise tock, the VRRVRR metronome from [Turi] works ...