Quadcopter follower

Firmware/software/electronics/mechanics
adadawuhehe
Beginner
Posts: 8
Joined: Sun Oct 20, 2013 11:19 am

Quadcopter follower

Post by adadawuhehe » Sun Oct 20, 2013 11:28 am

Hey hi, any ideas on working with two quadcopters, for example quadcopter B will follow at the back of quadcopter A, no matter how A goes ... :mrgreen:



derf
Expert
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Location: Germany

Re: Quadcopter follower

Post by derf » Sun Oct 20, 2013 1:35 pm

Tie a string to both quadcopters.... DONE. :P

Without information about the quad's position, either from onboard or external sensors (like cameras) this is highly unlikely.

marco.tognon
Member
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Joined: Mon Sep 16, 2013 10:22 am

Re: Quadcopter follower

Post by marco.tognon » Sun Oct 20, 2013 1:36 pm

Hi, I'm working on a similar project. I want to implement a swarm of quadrotor. The problem is which sensor we can add to do this. For example i would that each cf knows the distance from the other cf (without some external tracking systems).

adadawuhehe
Beginner
Posts: 8
Joined: Sun Oct 20, 2013 11:19 am

Re: Quadcopter follower

Post by adadawuhehe » Sun Oct 20, 2013 1:55 pm

lol, string is not a good idea in my case and it does not look like a good way to do it. So, what if I am given camera, sonar sensor etc... how do I implement it? Anyone can help I'm a beginner... :D

derf
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Posts: 163
Joined: Fri May 31, 2013 12:17 am
Location: Germany

Re: Quadcopter follower

Post by derf » Sun Oct 20, 2013 3:23 pm

@adadawuhehe:
Sorry If I burst your bubble, but it's far away from an easy ten step setup guide for a process which has been done a hundred times.

A lot of groundwork still needs to be done to give a SINGLE Crazyflie position and orientation information in a robust way.
Let alone having multiple Crazyflies flying together, be aware of each other or exchanging data.

Some groundwork stuff:
http://cfusting.wordpress.com/2013/07/2 ... ntric-data
http://www.bitcraze.se/2013/08/autopilo ... t-and-a-pc
http://www.bitcraze.se/2013/01/crazyfli ... cking-test

prashant7891
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Joined: Mon Oct 28, 2013 6:01 pm

Re: Quadcopter follower

Post by prashant7891 » Mon Oct 28, 2013 6:03 pm

Hi,
I have a set of sensors which can measure the position of the quadrotors and also have a control algorithm running in matlab. I wanted to know if there is anyway to send control signals to these quadrotors, automatically using my matlab code, without actually having to use the controller?

tobias
Bitcraze
Posts: 2013
Joined: Mon Jan 28, 2013 7:17 pm
Location: Sweden

Re: Quadcopter follower

Post by tobias » Tue Oct 29, 2013 10:09 am

I'm not sure how to easily integrate the python lib with matlab but it should definitely be doable. Have a look at the lib here. There is also a c++ lib and ruby lib.

adadawuhehe
Beginner
Posts: 8
Joined: Sun Oct 20, 2013 11:19 am

Re: Quadcopter follower

Post by adadawuhehe » Mon Dec 09, 2013 10:55 am

Hey hi, I am still thinking how to make one follower follows the leader crazyflie. At first I was thinking of using Kinect with the help of OpenCV but it limited my area of flying.So finally, my mind ends up with using a GPS. Basically, the idea is I put the GPS module on the leader, the absolute position of it will then capture on computer and it will be process and send a command to the new follower so that it can form a leader-follower formation. Is it possible to do so? :?

omwdunkley
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Location: Munich

Re: Quadcopter follower

Post by omwdunkley » Tue Dec 10, 2013 9:13 am

Hey Prashant,
id be interested in your setup. I just did something similar in python (posted it yesterday on this forum) - but am by no means a control expert. What kind of tracking system / control scheme did you use?

tobias
Bitcraze
Posts: 2013
Joined: Mon Jan 28, 2013 7:17 pm
Location: Sweden

Re: Quadcopter follower

Post by tobias » Thu Dec 12, 2013 10:08 am

GPS functionality would be awesome. The new uBlox-7 module is small and suitable for the Crazyflie. We recently ordered some breakout-boards from here. I'm not expecting them to work inside though so it will only be for outside flight.

Making them follow each other should be possible as the radio allows for communication between Crazyflies. Nothing implemented yet though but it would be an awesome project!

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