Take input from the keyboard and print it to a 16x2 LCD display.

lcd_exp.ino

#include <LiquidCrystal.h>

// LiquidCrystal display with:
// rs on pin 12
// rw on pin 11
// enable on pin 10
// d4-7 on pins 5 - 2

// LiquidCrystal lcd(12, 11, 10, 5, 4, 3, 2);
// LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

// Per https://www.hobbyist.co.nz/?q=16x2-arduino-lcd-shield, 
LiquidCrystal lcd(8,9,4,5,6,7); 

void setup() {
  // put your setup code here, to run once:

  Serial.begin(9600);
  lcd.begin(2, 20);
  // lcd.begin(16, 2);
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Evil Genius");
  lcd.setCursor(0, 1);
  lcd.print("Rules");

}

void loop() {
  // put your main code here, to run repeatedly:
  if (Serial.available())
  {
    char ch = Serial.read();

    if (ch == '#')
    {
      lcd.clear();
    }
    else if (ch == '/')
    {
      lcd.setCursor(0,1);
    }
    else
    {
      lcd.write(ch);
    }
  }
}