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 ...

for instance Arduino, you would need atleast 6 I/O pins to talk to the LCD. However, if you use an LCD module with I2C interface, you only need 2 lines to process the display information. Now a days, ...

and a WiFi adapter along with a few GPIO pins for interfacing with the outside world. [kgsws] is using the native SPI pins on this module to control the clock and data lines for the tiny LCD, with ...