Use APKPure App
Get Bluetooth RGB Control old version APK for Android
Control RGB LED via Bluetooth Protocol: RxGxBx\r\n x is value of colour:0-255
Control RGB LED via Bluetooth HC05 with Microchip Pic
Protocol: RxGxBx\r\n
x is value of colour:0-255
Information(Vietnamese):http://laptrinhpic.info/giao-tiep-voi-bluetooth-hc05-dieu-khien-led-rgb-qua-smartphone/