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 ...

When the user presses a key on the keypad, the Arduino reads the input and displays it on the second row of the LCD screen. After a short delay (500 milliseconds), the screen is cleared and prompts ...

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 ...