The lego remote control app contains three modules:
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app The Android smartphone application. It needs Android Lollipop+ (21+) because it uses the BLE API.
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legologic This module gets used by the app and the legowear module. It contains the communication bits with the remote car and the control UI.
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legowear The Android wear application using (as well as the app) the legologic bits to display the control UI and communicating with the (Lego) car model