15-494 Cognitive Robotics
Spring 2012
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Cognitive Robotics: Lab 1


Learning Goal: This lab will familiarize you with the Calliope robot and the Tekkotsu user interface, called the ControllerGUI.

Part I: Account Setup

You will only have to do this once.
  1. Log in to a lab workstation using your Andrew userid and password.

  2. Open a gnome-terminal by going to the pulldown menu at the top of the screen and selecting Applications > Accessories > Terminal.

  3. Run the setup script by typing this command in your terminal window:
    > /afs/cs/academic/class/15494-s12/utils/setup-account
  4. In your gnome-terminal, select Edit and then Profile Preferences. Click on Scrolling and set the scrollback size to 5000 lines. Then click the Close button to save your change.

  5. Logout and log back in again.

Part II: Calliope Familiarization and Powerup

Take a minute to look over your robot. With the power off, it's safe to gently move the head and arm.

Familiarize yourself with the layout of the robot, including the locations of switches and power jacks. Read the web page on Create Controls and Indicators. Then follow these steps to power up your Calliope:
  1. Make sure the netbook is powered up. If not, turn it on and it will boot in about a minute.

  2. Unplug the charger from the Create. Then press the power button on the Create to power it up. The power LED will flash several times and the Create will make a short beep to indicate that it has powered up successfully.

  3. If you're using a Calliope5KP, make sure the a/c power adaptor is plugged into the Calliope's external power jack. Then flip the toggle switch to "Ext/Chg". This connects the Calliope to external power. (Flipping the switch to the "Battery" position would run the Calliope on battery power.) The system power light next to the external power jack should come on.

  4. Connect to the robot from your workstation via ssh, with userid "user". If you're using robot #1, and connecting by wireless, then type "ssh user@calliope1.wv". If you're using a wired Ethernet connection instead of WiFi, then do "ssh user@calliope1.rel".

  5. Start a ControllerGUI running on your workstation. First, make a new tab by typing control-shift-T. Then type:
    > ControllerGUI calliopeN.wv    or    calliope.rel
  6. To start Tekkotsu running on the Calliope, type this in the shell on the robot (red prompt):
    > cd ~/project
    > ./tekkotsu-CREATE    or    ./tekkotsu-CALLIOPE5KP
    When Tekkotsu has completed its initialization and is ready to accept commands, you'll also notice that the ControllerGUI window comes alive and displays a command menu.

  7. In the ControllerGUI menu, go to File Access > Play Sound. Note: you must double click quicky on a menu entry to select it. If you have trouble doing this, then just click once and then hit [Enter].
  8. Click on a sound file name, then hit [Enter] to play the sound. Use the Back button to return to the Root Control menu.

  9. Click on the Raw button to display the current camera image. Click on the button again to close the window.

  10. Click on the Seg button to dislpay the color segmented camera image. Try holding some bright red, blue, or green objects up to the camera.

  11. On a Calliope5KP, click on the Depth button to display the depth map image.

  12. If you're using a robot with a movable head, make sure you are back at the Root Control menu, then click on the "H" button (in the Teleop row) to launch the Head Remote Control. This will allow you to move the head around. (You should always be at the Root Control menu when launching any of the other monitoring tools because of a known bug that is too obscure to explain here.) Click on the "H" button again to make the Head Remote Control go away.

Part III: Walking the Dog

This will give you a chance to take the Calliope for a walk.
  1. Unplug any external power or charger cords and put the robot on the floor.

  2. Power up your robot and run Tekkotsu again. Note that the ControllerGUI automatically reconnects.

  3. In the ControllerGUI, click on the "W" button in the Teleop row to launch the Walk Remote Control. Take the robot for a short walk around the lab. Don't run into anything!

  4. When you're done with your walk, power down again.

Part IV: Sensor Observer

  1. Read the Create sensors page at the Tekkotsu wiki.
  2. Go to the Sensor Observer exercise in the Teleoperation Lab on the Tekkotsu wiki and do steps 1-3 .

Part V: Powering Down

  1. Stop Tekkotsu by typing control-D or "quit" in the terminal window.

  2. Press the power button on the Create and the LEDs should all go out..

  3. On a Calliope5KP, move the toggle switch back to the neutral position, shutting off robot power and extinguishing the system power light.

  4. You can leave the netbook powered up; make sure it is plugged in to its charger, then close the lid.

Part VI: Charging the Batteries

Always plug in the Create's charger when you're done. In addition, if you've run a Calliope5KP on battery power, you should recharge its internal battery when you're done:
  1. Plug in the Create's charger cable.

  2. Plug in the netbook's charger cable.

  3. On Calliope5K: Disconnect the external power plug, plug the charger cable into the charger jack, set the charger mode switch to 1.8 amps, and flip the toggle switch to "Ext/Chag". The charger's red light should come on.

  4. If you're in the lab and you see that a charger has switched from a red light to a green light, flip the Calliope's toggle switch back to the neutral position. The battery is fully charged.

Part VII: Troubleshooting

  • If you get the error message "CREATE DRIVER: Still attempting to reconnect to Create...", and you've verified that the Create is powered up and the serial cable is plugged in at both ends, then run "fix_usbserial.sh" to fix a problem with the usbserial driver under Ubuntu.

  • For other troubleshooting tips, see the Tekkotsu wiki's Troubleshooting Guide.

     

    Dave Touretzky and Ethan Tira-Thompson