Drone(Quadrotor) fails to take off

I check /cmd_vel topic with rostopic echo cmd, and Twist msgs (none-zero) are being continously pubilished throughout the action, but the drone never response.
Thanks for any help.

If you are using the parrot ar drone there should be a topic /drone/takeoff that excepts Empty msgs.

1 Like

Thx, it works perfectly.
This topic is never menioned in the notenook, so i am unaware of it at all.

Also took me a while to find that topic