Simple Bluetooth RGB controller.
Try to use with AVR, PIC, Arduino, Raspberry Pi, etc...

Default data size is 3 bytes(RGB).
This 3 bytes(RGB) data can be able to change to string 6 bytes data.
ex. "FFFFFF"

If you want , you can add Alpha component and several markers.

Maximum number of buttons: 20
(By the screen size, the number of buttons that can be arranged is limited.)

The value of controller can be backup

About backup
・ storage location is displayed when you save.
・ The data saved folder "RGB Backup" is the common folder to TCP/UDP RGB Controller.

※Permissions for backup： WRITE_EXTERNAL_STORAGE , READ_EXTERNAL_STORAGE
※Permissions for advertising： INTERNET , ACCESS_NETWORK_STATE