LibrePilot Forum
Users => Vehicles - Ground => Topic started by: linklemming on April 12, 2016, 05:40:19 am
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Bought an atom cc3d, and put librepilot on it, just to play around with it.
The question is what can I control with it.
The steering seems obvious, needs some PID tuning, will play with that.
Since the input from the esc comes from the atom cc3d, can I play with parameters to control throttle(i.e. control pitch)?
Basically I am thinking about having wheelie/stoppie control and having the car staying level while jumping.
I am not new to Flight controllers, built about 15 quads from 110mm to 450mm. I am very familiar with cleanflight which I can configure in my sleep. I have even modified the cleanflght software for a few tweeks.
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I'm interested at what it can do in a car also.
I'm thinking traction control is possible, but I have no clue how to begin doing that. Like the Spektrum AVC thing.
Typical traction control is cutting power to the drive motor if the yaw is suddenly spiking to a high level?
From the setup page on the GCS, looks like a dual motor setup (motor per axle set) is possible also, but I don't know of any rc car setups with that.
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I did some successful testing with a Revo Software 16RC1 and GPS functions like RTB, PosHold, WaypointsMission.
A few years ago I used my old Multiwii Board with Plane settings on a small RC car. Connected Rudder to the steering Servo to prevent it from turning when I accelerated with full throttle. After tuning PID it worked perfect. Without the controller I could not keep it on a straight line or even one direction.
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Wheelie control seems doable, but how do you tell the difference between a wheelie and climbing a ramp suddenly? You could probably look at the rate profile. A wheelie would begin slowly and then the rotation would speed up. A ramp would spike and taper off. ?
Reducing power when yaw sees that traction is lost also seems interesting.
For me the interesting bit with ground / water vehicles would be GPS / autonomous, but that is not supported on CC3D.
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I did some successful testing with a Revo Software 16RC1 and GPS functions like RTB, PosHold, WaypointsMission.
Thats really interesting!
Can you please tell a bit more about the tests the hardware software configurations and your experience?
Would really be cool.
I have a traxxas with a revo and gps but the project has been sleeping for a while since could not make it work at all. Waypoints and RTB should be possible though ...
Best
K