Building a MIDI device is always a great microcontroller project, and nearly everyone has an old toy keyboard lying around in the back of a closet or in the basement. [JenShen] decided to take one … ...

Keypad Input: The code reads the input from a 4x4 keypad matrix.; Keyboard Emulation: Based on the pressed key, the Arduino sends corresponding keystrokes to the computer.; Keystroke Repetition: When ...

[awende] over at Sparkfun has created a Cherry MX Keyboard which incorporates all of the Autodesk Eagle Shortcuts to a single 4×4 matrix. The project exploits the Arduino Pro Mini’s ability to ...

A touchscreen matrix using an 3.5" ILI9488 TFT with resistive touch and a Raspberry Pi Pico. The Raspberry Pi Pico has native HID Keyboard support. This sketch gives you 12 buttons in a 4x3 matrix.

The third-generation computer is the first computer that allows users to interact with keyboards and monitors. A keyboard is a hardware device used to enter letters, numbers, special characters, and ...