Inside is an Arduino Pro Mini and a DF Player Mini that plays corresponding clips from a micro SD card whenever [Scott] presses a button on the 16-key copper foil capacitive keypad.

DESCRIPTION : This project demonstrates how to interface a 4x4 matrix keypad with an LCD (16x2) display using an Arduino board. The system captures key presses from the user via the keypad and ...

Hardware Requirements Arduino Board (e.g., Uno, Nano, or compatible) 16x2 LCD Display (HD44780 compatible, with I2C module or direct pins) 4x4 Matrix Keypad HC-SR04 Ultrasonic Sensor Piezo Buzzer 1x ...

To make that actually work, Robofun paired an Arduino board with some capacitive controllers for the base, and connected that to a Raspberry Pi that linked the keyboard to the TV.

The design philosophy behind the Optimus Mini 3 Keypad is to create a versatile and user-friendly device that can serve multiple purposes. According to the Art Lebedev blog, the team is focusing ...