First Milestone of Arduino Sandbox

sandbox.ino

#include <LiquidCrystal.h>

int greenPin = 8;
int redPin = 9;
LiquidCrystal lcd(12, 11, 5, 7, 3, 2);

void setup()
{
  pinMode(greenPin, OUTPUT);      
  pinMode(redPin, OUTPUT);
  
  lcd.begin(16, 2);
  lcd.print("self test");
  
  digitalWrite(greenPin, LOW);
  digitalWrite(redPin, HIGH);
  delay(1000);
  digitalWrite(greenPin, HIGH);   
  digitalWrite(redPin, LOW);
}

void loop()
{
  lcd.setCursor(0, 1);
  lcd.print(millis()/1000);
}