I'm trying to calibrate my Turtlebot, with the eventual hope of it doing autonomous navigation of a room, driving to AR Tags it sees in sequence. Currently the calibration is failing even after I changed the parameters as per the guide. The error I'm getting is

core service [/rosout] found

process[camera/cameranodeletmanager-1]: started with pid [32593]

process[camera/opennicameraloader-2]: started with pid [32598]

process[camera/rgb/debayer-3]: started with pid [32651]

process[camera/rgb/rectify_mono-4]: started with pid [32760]

process[camera/rgb/rectify_color-5]: started with pid [415]

process[camera/depthregistered/rectifydepth-6]: started with pid [470]

process[camera/points_xyzrgb-7]: started with pid [566]

process[camera/depthimagetolaserscan_loader-8]: started with pid [616]

process[scantoangle-9]: started with pid [681]

process[turtlebot_calibration-10]: started with pid [729]

[INFO] [WallTime: 1367433294.845237] has_gyro True

[INFO] [WallTime: 1367433294.934377] Estimating imu drift

[INFO] [WallTime: 1367433295.237175] Still waiting for imu

[INFO] [WallTime: 1367433295.539520] Still waiting for imu

[INFO] [WallTime: 1367433295.842440] Still waiting for imu

[INFO] [WallTime: 1367433296.145438] Still waiting for imu

[INFO] [WallTime: 1367433296.448198] Still waiting for imu

[INFO] [WallTime: 1367433296.750488] Still waiting for imu

[INFO] [WallTime: 1367433297.052759] Still waiting for imu

[INFO] [WallTime: 1367433297.355578] Still waiting for imu

[INFO] [WallTime: 1367433297.659046] Still waiting for imu

[INFO] [WallTime: 1367433297.961589] Still waiting for imu

[INFO] [WallTime: 1367433298.264331] Still waiting for imu

[INFO] [WallTime: 1367433298.566699] Still waiting for imu

[INFO] [WallTime: 1367433298.869760] Still waiting for imu

[INFO] [WallTime: 1367433299.172202] Still waiting for imu

[INFO] [WallTime: 1367433299.474356] Still waiting for imu

[INFO] [WallTime: 1367433299.777435] Still waiting for imu

[INFO] [WallTime: 1367433300.083724] Still waiting for imu

[INFO] [WallTime: 1367433300.386638] Still waiting for imu