Sample App 2: Navigator

Micro Rover Sample App: Navigator

The Navigator is a basic dual joystick Android app to drive the Micro Rover. The app enables a user to control all of the robot's functionality manually.


Installing the app

  • On the device, in the Developer Options Menu, enable 'USB debugging' on your Android device
  • Connect your Developer Mode Enabled device to your PC
  • On the device you may be asked to accept an RSA key to enable debug connection to the PC, accept the key
  • On the PC command line, to verify ADB is working, type "adb devices". If successful, this will list a serial number and status. "device" as status means that ADB is connected.

C:\TEMP>adb devices
List of devices attached
TA880008YN      device

  • From a PC command line, change directory to the location of the MDRSimpleNavigator.apk
  • From the PC command line, type "adb install -r MDRSimpleNavigator.apk"
  • ADB will return "success" if successful

C:\TEMP>adb install -r MDRSimpleNavigator-debug.apk
2612 KB/S (38256 bytes in 0.143s)
        pkg: /data/local/tmp/MDRSimpleNavigator-debug.apk

Pairing the Android device to the IOIO board

  • The Android device will communicate via Bluetooth the IOIO board controller on the robot.
  • Turn on the robot. A red LED on the IOIO board should illuminate and the Bluetooth dongle may flash indicating that it is active
  • On the Android Device, open the Settings
  • From the device Settings menu, turn Bluetooth on
  • From the device Settings menu, select Bluetooth by clicking the area to the left of the on/off slider
  • In the device Bluetooth menu, after scanning for devices, the IOIO board should appear in the available devices

Screenshot showing IOIO board appearing as available device in bluetooth menu

  • From the list of available devices, select the IOIO board
  • In the pairing dialog, enter the default IOIO pin "4545" and press OK

Screenshot showing bluetooth pairing request

  • The Android device and the IOIO board should now be paired and ready to use

Screenshot showing device and IOIO board paired


  • Turn on the Micro Rover
  • Find the icon labeled MDR Simple Navigator in your Android device's app tray


  • Click on the icon to open the app
  • The app contains multiple buttons to control the robot
    • The left joystick controls the forklift up and down with a return to center
    • The right joystick controls the drive: forward, back, left, right with proportional control to joystick position
    • The aft left and right buttons are for camera pan
    • The interior up and down buttons are for absolute forklift positioning

Screenshot of Navigator sample app user interface