The app can be connected with a bluetooth module(eg: HC-05) after pairing the phone with it.The voice recognition function in the app converts the words you speak into text and sends it to the bluetooth module. Detailed procedure about how the characters are send is described in the app.The accelerometer testing function in the app uses the accelerometer sensor which determines the acceleration of the phone in X,Y and Z axes and sends values accordingly as described in the app.This function can be used to control a robot by tilting the phone. The button control uses 6 buttons- Forward,Backward,Left,Right,Anti-clockwise and Clockwise which can be used to control a robot via bluetooth.
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