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android_tutorial_teleop for TurtleBot

asked 2012-10-11 20:40:35 -0600

steven7 gravatar image

updated 2012-10-15 03:15:35 -0600

Hi I am trying to develop an application for TurtleBot I am trying to run the tutorial from android_core. First of all, the android_tutorial_pubsub seems to work fine as when I enter my master URI the app does respond with Hello World and the timer.

But then I encountered some problem on android_tutorial_teleop. At first when I touch the virtual joystick I received NullPointerException and the app crashes. I somehow fixed it by adding a line guided by one user here. But then even when I move the joystick around, the TurtleBot is unresponsive. Therefore I am wondering where is the problem? Do I have to run some commands first on the TurtleBot laptop and android_tutorial_teleop doesn't work on TurtleBot? I did follow the tutorial on TurtleBot bringup but to no help so far.

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answered 2012-11-12 22:59:53 -0600

damonkohler gravatar image

First try running the keyboard teleop from a networked computer. That will help ensure your TurtleBot is operating correctly. Then I suggest digging into the system with the roswtf, rosgraph, and rostopic tools to diagnose the issue.

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Asked: 2012-10-11 20:40:35 -0600

Seen: 415 times

Last updated: Nov 12 '12