The Adafruit Bluefruit LE (Bluetooth Smart, Bluetooth Low Energy, Bluetooth 4.0) nRF8001 Breakout allows you to establish an easy to use wireless link between your Arduino and any compatible iOS device. This project shows you how to create an Arduino project using this breakout connected to your iOS device using the iShield App.
The breakout uses SPI communication with the Arduino and with iShield, you're going to be able to control (turn on/off) a LED using digital buttons in your iOS device. Also, this project uses a physical push button to control (turn on/off) a virtual LED.
iShield is the easiest way to create wireless projects using your iOS device and your Arduino. To know more about this app visit: viccarre.mx/ishield.html