Closed jrlandau closed 6 years ago
Hi @jrlandau, it's true that the wiki doesn't give much information about it. I will update it myself when I have some free time, but in the meantime...
/cmd_vel
, /compressed_image
among others. Moving the joystick will publish twist
commands to /cmd_vel
. You can publish images to /compressed_image
to visualize the image stream there too.Does that make sense?
I did get the robot to move, and I was able to see the cmd_vel messages by using rostopic echo on the robot. I don't understand what you are doing with images at all. What images?
Is this a rosjava app?
On Mon, Oct 9, 2017 at 6:12 PM, Juan Ignacio Ubeira < notifications@github.com> wrote:
Hi @jrlandau https://github.com/jrlandau, it's true that the wiki doesn't give much information about it. I will update it myself when I have some free time, but in the meantime...
- When you turn on the application, you will first see the MasterChooser activity. Write the IP address of your ROS master running (which would probably be the robot) and press "connect"
- Once connected, try listing the topics. You will see ´cmd_vel´, ´compressed_image´ among others. Moving the joystick will publish ´twist´ commands to ´cmd_vel´. You can publish images to ´compressed_image´ to visualize the image stream there too.
Does that make sense?
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When you connect to the ROS master in the teleop app, you will see not only the joystick but an optional image stream:
To visualize that in your Android device, you need your robot to publish compressed images to the topic
compressed_image
. If your robot doesn't have a camera or can't publish images, don't worry about it, you can still teleoperate it.
Thanks--I understand. I am working with Ubiquity Robotics and have written a robot control app https://play.google.com/store/apps/details?id=com.jrlandau.robotcmdr&hl=en with voice control. So, I'm always interested in what other people have done.
I will investigate providing the image facility, as you do.
My app is a Cordova app, uses Rosbridge, open src, and is on GitHub https://github.com/UbiquityRobotics/Robot_Commander.
Your comments are welcome.
Joe
On Sat, Oct 14, 2017 at 10:29 AM, Juan Ignacio Ubeira < notifications@github.com> wrote:
When you connect to the ROS master in the teleop app, you will see not only the joystick but an optional image stream: [image: image] https://user-images.githubusercontent.com/2480899/31577819-d9256d22-b0eb-11e7-984a-fe5e5dc300d8.png To visualize that in your Android device, you need your robot to publish compressed images to the topic compressed_image. If your robot doesn't have a camera or can't publish images, don't worry about it, you can still teleoperate it.
— You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub https://github.com/rosjava/android_apps/issues/71#issuecomment-336650623, or mute the thread https://github.com/notifications/unsubscribe-auth/ADxmjFCgRWwi9eq9VplXKZ0lc0gjhtoxks5ssO9xgaJpZM4PxjJS .
@jrlandau interesting! Thanks for the info.
/cc @Shokman @FlorGrosso @eborghi10 ^
I have been unable to figure out how this app is to be used. Is there documentation? The wiki is uninformative.