To link a standard 16×2 LCD directly with the microcontroller, 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 ...

The Nokia 5110 LCD module just pops right on, and beyond the extra pins added for the three LED colors, gets wired up the same as before. The backlight LEDs just need a few spare GPIO pins on your ...