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 ...

Overview The Arduino Keypad-LCD Controller is a project that utilizes an Arduino Uno R3, an LCD display, and a keypad to create an interactive user interface. This system allows users to input data ...

Arduino Uno/Pro/Mini or Custom board using Atmega 328p Microcontroller 16 x 2 LCD (Liquid Crystal Display) 4 x 3 or 4 x 4 matrix keypad for Arduino Servo motor 3D printed door locker/customised door ...

This little guy, while simple in nature, acts as a fully functional (and portable) keypad on the go! It comes with two main programs, and it connects easily to your Arduino. It can be used to: 1 ...

Pacman Game on Arduino Due with ILI9341 and VGA support (available 2 outputs at the same time), playable with keypad, 5 sample levels, VGA output is 240×320. To Do: fix glichies… ...

This calculator uses a full 16 button matrix keypad. The Arduino deciphers button pushes with the help of the Keypad library, at which time the appropriate character is displayed on the 2×8 LCD ...

Circuit and Working Fig. 2 shows the circuit diagram of the automatic school bell. It is built around Arduino Uno R3, 16×2 LCD display with I2C (MOD1), DS3231 RTC, 4×4 matrix keypad, 5V SPDT relay, ...

The 8×8 red LED matrix is driven by the wonderful Max7219 display driver, and a 3-axis accelerometer and battery charging circuit fills out the build.