The most popular display system widely used in Arduino projects is the liquid crystal display (LCD). LCD displays consists primarily ... to apply pulse width modulation control. The wiring diagram and ...

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 ...

However, if you use an LCD module with I2C interface, you only need 2 lines to process the display ... the address connections (A0-A1- A2) are not bridged with solder it will have the slave address ...