Arduino LCD Analog/digital Input Monitor.

This is how to make an arduino powered LCD input/output monitor

These are the things that you will need.

Arduino UNO.
DFRobot 1602 LCD keypad shield(It doesn't have to be this exact type, you just have to know the pin-out.).
Computer (with arduino IDE software).
USB cable (A-B).

//Jacoby Yarrow Jan 2014 
#include <LiquidCrystal.h> 
LiquidCrystal lcd(8,9,4,5,6,7);
void setup() {  
	lcd.begin(16, 2);
	pinMode(3, INPUT); 
}
void loop() { 
	lcd.setCursor(0,0);   
	lcd.print(" Arduino input");    
	lcd.setCursor(0,1);  
	lcd.print("A0:"); //analog input   
	lcd.print(analogRead(A0));   
	lcd.setCursor(8,1); 
	lcd.print("D3:"); //digital input  
	lcd.print(digitalRead(3));   
	delay(300);  //change delay to change refresh rate 
	lcd.setCursor(3,1); 
	lcd.print(" "); 
}

Comment if there are any errors in the code, thanks.