I had make a project for sms remote control.You could convert it for alarm system , look www.power7.net

Welcome to arduino world. Look into my new site power7.net  . I had make a project for sms remote control with an old mobile phone as GSM modem.

I make another android application WEB CONTROL LED which control android and your arduino with LDR.If android flash LED on , arduino receive from analog pin (LDR) the signal and open another led or device.Look my new site www.power7.net

Hello.I make many projects for control arduino from web browser with ethernet card,from gsm with sms and cellphone and now with android smartphone or tablet (IOWebBt apk) work as GPRS/3G shield without ethernet card.User (Client web browser)<--->Cloud (web server)<--->Android+bluetooth+Internet connection(3G or wi/fi)<---->Arduino + bluetooth+Sensors<--->Blink led on/off,control servo motors,robots,cars,boats....anything you want.I work for transfer pictures,video,location and others values from android sensors.Look my new site http://www.power7.net for more informations.

Hello.I make an android application for arduino communicate with cloud.The android device connect with arduino via bluetooth or usb shield.My project is inside http://www.power7.net

Hello.I try this http://mitchtech.net/android-arduino-usb-host-simple-digital-output/ for test my usb host shield 2.0+arduino duemilanove+android cell phone.The application work (no errors) but the led on boards no flash.What library i must use?I use the default adb from microbridge.

I try test Usb host shield 2.0+Arduino duemilanove with example ArduinoBlinkLED sketch from Usb host shield 2.0 Library.I upload it in my arduino board and after upload to my android cell phone(4.0.4) this application http://allaboutee.com/2011/12/31/arduino-adk-board-blink-an-led-with-your-phone-code-and-explanation/ I upload the application to my phone but when push button for on led ...stop and exit.Any help for this?I use external power supply.Thanks.

I read this http://arduino.cc/en/Main/ArduinoBoardADK and test it with 2 batteries Lithium 3.7 volt and work well because draws current as needed.I think need power supply 9V 2A.

Hello.What is the appropriate power supply for arduino duemilanove+usb host shield 2.0+Android cell phone+Leds.I use 9volt and 850 mA and the application stop after 1 minute.Any idea?Help?Thanks.

Ok.Work.
1.Upload sketch without shield.
2.Reset
3.External power 9V.
4.Reset.
5.Pin 3 Led on/off
6.Phone message toast check OK.

Hello.Today receive a usb host shield 2.0 http://www.tinyosshop.com/index.php?route=product/product&path=60_73&product_id=169
Install the library Usb host shield 2 and load the ArduinoBlinkLED.pde and the apk to my android cell phone (SE Xperia mini with android 4.0.4) but the arduino blink led no work.I test and another pin 3 no work.The pin 9 is always on.Any help?advice?Thanks.

Hello.I want to control my arduino (led on/off example) from my webserver www.mydomain.com/arduino.php with an android phone connect via bluetooth shield or with usb shield or with cable otg....Any example?Help?Application for this?Thanks.

Hello.I have an andoid cellphone and i want connect with my arduino via usb .I found this application https://play.google.com/store/apps/details?id=com.primavera.arduino.listener&feature=search_result#?t=W251bGwsMSwxLDEsImNvbS5wcmltYXZlcmEuYXJkdWluby5saXN0ZW5lciJd What cables i need for this?Two cables?Cable arduino usb and micro usb otg? Someone has dealt with this?Thanks.

Hello.I want connect my mobile phone Sony Ericsson W995 via usb data cable with usb shield and arduino.I want talk with AT commands and output data to arduino with java application.Has someone dealt with this give me relevant information?Thanks.

Software: I use for java2me HttpConnection interface and CommConnection interface.For arduino code you must use serial and AT commands.
Hardware: Connect arduino serial Tx,Rx with  mobile phone cable...example with old sony ericson k700.For new phones example SE W995 you must use usb shield...
Read Google : Arduino serial connect usb mobile phone...Another option is connect with bluetooth...working on these and i will have the solution (java and arduino code) soon.Thanks.