#include <LiquidCrystal.h>

LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
int speed = 0;
int potPin = A0;
int potValue = 0;

void setup() {
  lcd.begin(16, 2);
}

void loop() {
  potValue = analogRead(potPin);
  speed = map(potValue, 0, 1023, 0, 100);
  
  lcd.setCursor(0, 0);
  lcd.print("Speed: ");
  lcd.setCursor(0, 1);
  lcd.print(speed);
  lcd.print(" km/h");

  delay(500); 
}