FlightTab: Add Command Based Flight Control

[jonasdn]

If connected and a positioning deck (bcFlow, bcFlow2, bcLightHouse4, bcDWM1000) is found we enable a simple interface to send high level commands to the Crazyflie.

This is to make the "first encounter" with the Crazyflie and the client more enjoyable, and to enable a user to fly around with the drone without any real experience.

When disconnected the interface is disabled:

And when connected and a positioning deck is detected it is enabled:

If connected and no deck is found a tooltip is added as well:
'You need a positioning deck to use Command Based Flight Control'

[krichardsson]

Nice addition!

If you want a bigger take on this, there is also the option of adding a generic positioning tab. It might be out of scope for this PR but I just wanted to put it out there.

At the moment we have 3 tabs with positioning related functionality (the LPS tab, the lighthouse tab and the Qualisys tab) and it might be interesting to consolidate it somehow. There is for instance a similar functionality to what you are adding in the Qualisys tab (a simple trajectory generator and autonomous flight).
Not sure what a generic positioning tab would look like but maybe 3D visualization and simple control of the CF?

[jonasdn]

Nice addition!

If you want a bigger take on this, there is also the option of adding a generic positioning tab. It might be out of scope for this PR but I just wanted to put it out there.

At the moment we have 3 tabs with positioning related functionality (the LPS tab, the lighthouse tab and the Qualisys tab) and it might be interesting to consolidate it somehow. There is for instance a similar functionality to what you are adding in the Qualisys tab (a simple trajectory generator and autonomous flight).
Not sure what a generic positioning tab would look like but maybe 3D visualization and simple control of the CF?

Thank you!

I wanted this simple thing on the landing page because I sort of looked for it the first time I opened the client. And it is simple enough that my kids could fly around a bit with the CF.

I was actually thinking about adding a Flight Planner tab, where you would drag-n-drop command-actions to a list and then execute a flight plan, a playful way to make the drone do your bidding.

[whoenig]

Don't create a SyncCrazyflie (should only be used with the "with" syntax). Instead, use self.helper.cf directly, see https://github.com/bitcraze/crazyflie-lib-python/blob/6e3f0e3c2870ab96a0276aaaf0d14bf49b758a34/cflib/positioning/position_hl_commander.py#L67-L70

[tobbeanton]

Nice! What about having rotate 90 deg left/right buttons as well?

[jonasdn]

Nice! What about having rotate 90 deg left/right buttons as well?

Yeah maybe! My main goal was making something simple, but if we can get the UI intuitive enough, lets go for it.