Android Bluetooth Low Energy 참고 사이트 1. 참고하기에 좋은 예제https://github.com/joelwass/Android-BLE-Connect-Example 2. Google Android 기본 BLE 설명https://developer.android.com/guide/topics/connectivity/bluetooth-le.html 3. Google Android 기본 예제https://github.com/googlesamples/android-BluetoothLeGatt/