Arduino LCD 16x2 Display Code (LiquidCrystal)

The question

Using the LiquidCrystal library with pins RS=12, E=11, D4=5, D5=4, D6=3, D7=2, show "Temp Monitor" on the first row and "Starting..." on the second row.

The sketch

#include <LiquidCrystal.h>

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

void setup() {
  lcd.begin(16, 2);
  lcd.print("Temp Monitor");
  lcd.setCursor(0, 1);
  lcd.print("Starting...");
}

void loop() {
}

Wiring

LCD: RS → 12, E → 11, D4 → 5, D5 → 4, D6 → 3, D7 → 2, VSS/RW/K → GND, VDD/A → 5V.

How it works

1. 1#include <LiquidCrystal.h> loads the library.
2. 2LiquidCrystal lcd(12, 11, 5, 4, 3, 2) tells it which pins are RS, E and D4–D7.
3. 3lcd.begin(16, 2) sets the size; lcd.print() writes text.
4. 4lcd.setCursor(0, 1) moves to column 0 of the second row — rows are counted from 0.