RGB Light

This is what Android BT LED Controller App can do:

1.     Connect to Bluetooth
2.     Wireless control LED on/off
3.     Wireless control LED to change the color

The screen of Android APP is below and you can use it easily:

• Click the ”BT-List” button (The red dot next to it means BT not connected)

• Next select the Bluetooth you want to connect from the list, after it connected successfully, the APP will jump back to the main screen

• On the main screen says BT connected (The green dot indicates BT connected)
• Click LED on / LED off button, you can turn LED on/off

• Click any color block on the App, the RGB color code will be sent to HC-05 and HC-05 will send the RGB color code to Arduino. RGB code is composed 3 numbers of 1~255 with “)” as the ending character, such as “255.20.10)”. Arduino receives a character at a time from the serial port and it combines all characters together. When a “)” is received, the RGB code is completed.
• Arduino then decompose RGB code string into 3 sets of numbers for R, G, B, and then send the code to RGB LED to display the color indicated.
• As shown below (RGB code 255.51.255 will make RGB LED to show magenta)
• Click Disconnect to cut the connection between Android and Arduino.

V3.0 Added R, G, B slider to allow you to change the brightness of the particular LED

1. Touch any color on the wheel to change the specific color

2. Glide your finger on the color wheel to change color gradually from one to another

3. Slide R, G, or B slider to change the particular brightness of the LED

4. Have fun for learning MIT App Inventor 2!!