// LCD1602 to Arduino Uno connection example

#include <LiquidCrystal.h>

LiquidCrystal lcd(12, 11, 10, 9, 8, 7);

const int numRows = 2;
const int numCols = 16;

void setup() {
  lcd.begin(numCols, numRows);
}

void loop() {

  // loop from ASCII 'a' to ASCII 'z':
  for (int thisLetter = 'a'; thisLetter <= 'z'; thisLetter++) {
    // loop over the columns:
    for (int  thisRow = 0; thisRow < numRows; thisRow++) {
      // loop over the rows:
      for (int thisCol = 0; thisCol < numCols; thisCol++) {
        // set the cursor position:
        lcd.setCursor(thisCol, thisRow);
        // print the letter:
        lcd.write(thisLetter);
        delay(200);
      }
    }
  }
}