buildcircuit

const int sensorDOPin = 2;     // connect DO pin to pin 2 of Arduino
const int ledPin =  13;      // the number of the LED pin

// variables will change:
int SensorState = 0;         // variable for the state of the sensor

void setup() {
  // initialize the LED pin as an output:
  pinMode(ledPin, OUTPUT);
  // initialize the sensor pin DO as input

buildcircuit

// include the library code:
#include <LiquidCrystal.h>

// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(13, 12, 10, 9, 8, 7);

void setup(){
    // set up the LCD's number of columns and rows: 
  lcd.begin(16, 2);

buildcircuit

/*
Example: Control a WTV020-SD-16P evaluation board to play voices using WTV020SD-16P
module. 
www.buildcircuit.com
Released into the public domain.
*/
 
#include <Wtv020sd16p.h>

int resetPin = 2; // The pin number of the reset pin. 

buildcircuit

//Arduino 1.0+ Only
//Arduino 1.0+ Only

#include "Wire.h"
#define DS1307_ADDRESS 0x68

void setup(){
  Wire.begin();
  Serial.begin(9600);
}

buildcircuit

// Date and time functions using a DS1307 RTC connected via I2C and Wire lib
 
#include <Wire.h>
#include "RTClib.h"
 
RTC_DS1307 RTC;
 
void setup () {
    Serial.begin(57600);
    Wire.begin();

buildcircuit

/* Shift Out Data
Decimal to Binary using Android Emulator
 *
 works with Arduino 1.0 and above
 */

int ledPin=11;
int data = 8;//Connect Pin 8 of Arduino to pin 2 of CD4094 or HEF4794
int strob = 7;//Connect Pin 12 to Pin 1 of CD4094
int clock = 10;//Connect pin 10 of Arduino to pin 3 of CD4094

buildcircuit

/* Shift Out Data
 * --------------
 * 
 * Shows a byte, stored in "dato" on a set of 8 LEDs
 *
 * (copyleft) 2005 K3, Malmo University
 * @author: David Cuartielles, Marcus Hannerstig
 * @hardware: David Cuartielles, Marcos Yarza
 * @project: made for SMEE - Experiential Vehicles
 */

buildcircuit

int mq3_analogPin = A0; // connected to the output pin of MQ3 

void setup(){
  Serial.begin(9600); // open serial at 9600 bps
}

void loop()
{
  // give ample warmup time for readings to stabilize

buildcircuit

#include <LiquidCrystal.h>
// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(8, 9, 4, 5, 6, 7);
void setup() 
{
 // set up the LCD's number of rows and columns:
 lcd.begin(16, 2);
 // Print a message to the LCD.
 lcd.print("Hello, world!");
}

buildcircuit

/*
  Sends sensor data to Android
  (needs SensorGraph and Amarino app installed and running on Android)
*/
 
#include <MeetAndroid.h>

MeetAndroid meetAndroid;
int sensor = A1;
int redLed = 11;