Hi guys,
I have a question regarding the hector_controller and how it works.
In many question on this Q&A I've read that the software is going to works with `/move_base` which gives the velocity inputs to move the quadrotor.
There a small problem: looking at the software on github I didn't find any topic subscribing to the `/cmd_vel` broadcasted by `/move_base`.
1. Is `/move_base` essential to drive the hector_quadrotor?
2. Next: since a quadrotor needs a controller even for the height too, it cannot rely only on `/move_base` but needs another node or controller that brings the copter at the desired height. Does it means that are there 2 controllers working at the same time to move the quadrotor?
In the controller [posted code](https://github.com/tu-darmstadt-ros-pkg/hector_quadrotor/tree/hydro-devel/hector_quadrotor_controller) I couldn't find those information.
Regards
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