Connect the I2C Module to the Arduino: SCL of module to A5 of Arduino SDA of module to A4 of Arduino VCC of module to +5V of Arduino GND of module to GND of Arduino Adjust the brightness using the ...

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 ...

Running out of GPIO pins? Learn how to connect multiple buttons to just one Arduino pin using clever wiring and resistor techniques. Perfect for compact projects, keyboards, or when using small ...