Robometrix Remote Control for Android
The arrow buttons control the robot's direction and the red button in their center stops the robot.
The blue buttons control the camera position, incrementing up, down or flipping the camera 180 degrees.
The green button turns on the robot's speaker and the red button below it turns it off.
The red button at top left turns on the Android device's (the device running this app) microphone so that when the robot's speaker is on, the person controlling the robot can have a conversation. Pressing the red button again turns off the microphone.
The grey button with the circular arrow causes the robot to turn farther each time a turn button is pressed. Pressing it again restores shorter turning.
The grey "X" button turns off the forward and backward commands and is useful when the robot is being used on a table, so it isn't driven off of the table by accident. Pressing it again restores forward and backward commands.
Please go to robometrix.com for videos and more information.