(reference circuit diagram of the lcd backpack) I2C LCD Display. Now let’s get started. At first you need to solder the backpack to your LCD module. Ensure that the backpack pins are straight and fit ...

Plug the RFID module into the breadboard with enough space around it. Connect the VCC pin to the Arduino's 3.3V (not 5V), and ...

To build this project, all you need is three main components: an Arduino Uno, a 16x2 LCD, and a push button. You can connect everything to a breadboard to keep it simple.