Introduction: Arduino-Android Bluetooth LED Controller
I made a 3-LED by-Android-controlled Arduino application.
I used the HC-06 Bluetooth module, bought from Alibaba.
The arduino and LEDs are pretty standard.
For the app I used the incerdible online MIT App inventor application.
Step 1: Hardware
The hardware is pretty simple. You'll need some LEDs, I used 3 of different colors.
The connections are as followed:
- pin11 --[orange]-- redLED+ --- redLED- --- 220OhmsResistor --- GND
pin12 --[orange]-- greenLED+ --- greenLED- --- 220OhmsResistor --- GND
pin13 --[orange]-- blueLED+ --- blueLED- --- 220OhmsResistor --- GND
- 5v --[green]-- HC06VCC
- GND --[yellow]-- HC06GND
- TX --[orange]-- HC06RX
- RX --[yellow]-- HC06TX
This application will be onedirectional: APP --> Arduino, so the 6th connection is not needed.
Step 2: Arduino Code
I started my code, based on http://randomnerdtutorials.com/how-to-use-app-inve...
I use 3 LEDs instead of only 1.
Step 3: Android App
The app is made using MIT app Inventor:http://appinventor.mit.edu/explore/front.html .
The App interface is build using 3 buttons with an image over it.
I just used powerpoint to gave it some different colors and a white or yellow background.
When pressed, the the image switches between a white background image and the yellow background image.
The APK file is included.
It is very easy to expand the app further to include eror handling, support more LEDs, communicate back,... .