Arduino Nano HD44780 16x2 LCD Display

To use an HD44780 16x2 LCD display with an Arduino Nano, you will need the following:

1. Arduino Nano board
2. HD44780 16x2 LCD display
3. Potentiometer (10K)
4. Breadboard
5. Jumper wires

Here are the steps to connect and program the Arduino Nano for the LCD display:

1. Connect the LCD display to the breadboard.
2. Connect the VSS pin of the LCD display to GND on the Arduino Nano.
3. Connect the VDD pin of the LCD display to 5V on the Arduino Nano.
4. Connect the V0 pin of the LCD display to the middle pin of the potentiometer.
5. Connect one end of the potentiometer to GND on the Arduino Nano and the other end to 5V.
6. Connect the RS pin of the LCD display to digital pin 12 on the Arduino Nano.
7. Connect the RW pin of the LCD display to GND on the Arduino Nano.
8. Connect the E pin of the LCD display to digital pin 11 on the Arduino Nano.
9. Connect the D4-D7 pins of the LCD display to digital pins 5-8 on the Arduino Nano.
10. Upload the following code to the Arduino Nano:

#include <LiquidCrystal.h>

LiquidCrystal lcd(12, 11, 5, 6, 7, 8);

void setup() {
  lcd.begin(16, 2);
  lcd.print("Hello, world!");
}

void loop() {
  
}

11. Once the code is uploaded, you should see "Hello, world!" displayed on the LCD screen.