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BLE – Battery Client Nowadays a lot of DIY project use rechargable battery to make the product mobile and portable, but monitor the battery level can be quite troublesome, with RTL8722DM BLE and WiFi microcontroller from Realtek, we can retrieve battery information through BLE easily, here is how, Materials AmebaD [RTL8722 CSM/DM] x 2 Example Introduction BLE connections use a server client model. The server contains the data of interest, while the client connects to the server to read the data. Commonly, a Bluetooth peri