Arduino-Android Bluetooth LED Controller

by SteCla in Circuits > Arduino

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Arduino-Android Bluetooth LED Controller

IMG_20170310_233506[1].jpg

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.

Hardware

IMG_20170310_233516[1].jpg

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.

Arduino Code

ArduinoCode.PNG

I started my code, based on http://randomnerdtutorials.com/how-to-use-app-inve...

I use 3 LEDs instead of only 1.

Downloads

Android App

Android_Screenshot.png
MITAppInventor_Back.PNG
MITAppInventor_Front.PNG

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,... .