The first thing you will need for this project is an Arduino Uno board.
Then, you will need a BLE module. We chose the Adafruit nRF8001 chip because it comes with a nice Arduino library, and it already has existing examples of Android apps to control the module.
The following is a close-up picture of the module we used for this project:
You will also need one LED of the color of your choice, and a 330 Ohm resistor. Finally, to make the different electrical connections, you will also need a breadboard and some jumper wires.
The following is the list of all hardware parts you will need for this project, along with links to find these parts on the Web:
The Arduino Uno board (http://www.adafruit.com/product/50)
The 330 Ohm resistor (https://www.sparkfun.com/products/8377)
The Adafruit nRF8001 breakout board (https://www.adafruit.com/products/1697)
The breadboard (https://www.adafruit.com/product/64)
Jumper wires (https:/...