This is a flight demo of the recently released MatrixPilot 5.0flying the helical Turn algorithms by William Premerlani.

MatrixPilot is a relatively small open source GPL v3 licensed Autopilot, which provides a platform for DIY enthusiasts to experiment with new algorithms and ideas. It does not have a large user base, partly because any change in it's configuration requires a recompilation of the code.  The official announcements for this 5.0 release is on the uavdevboard discussion list.

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Comment by Vladimir "Lazy" Khudyakov on October 30, 2016 at 10:32am

Pete, what a plane you hold on awatar photo? :)))

Comment by Pete Hollands on October 30, 2016 at 10:46am

@Vladimir: It's a "Tercel" by Bridi Aircraft Designs Inc, that I made while on trip to California in the late 1980s. 

Comment by Vladimir "Lazy" Khudyakov on October 30, 2016 at 10:52am


Many thanks :) Interesting small glider, I think I make something similar :))

Comment by Gary Mortimer on October 30, 2016 at 12:17pm

Wonderful to see more of MatrixPilot, it has been too long! Thanks Pete.

Comment by Andrew Tridgell on October 30, 2016 at 12:53pm

congratulations on the release!

Comment by Tom Pittenger on October 30, 2016 at 9:23pm

Here here! Congrats on the release, Peter and Bill!

Comment by GliderUAV on October 31, 2016 at 7:58am

Peter and Bill,

Congrats. A nice milestone for a nice autopilot.


Comment by Rana on November 1, 2016 at 10:34am

MatrixPilot is much older than the world's most popular Arduilot (would say MatrixPilot is big daddy of Ardupilot).

But see the bizarre, even after so many years, Matrxpilot does not seems to compete even with Ardupilot based on APM2560. Matrix pilot does not have two-way telemetry for mission modification on the fly.

Comment by Andy Little on November 1, 2016 at 11:10am

I think the main problem with MatrixPilot is that it is tied to Microchip's version of gcc, which is  (or was) quite difficult to use and lagging a long way behind

Comment by Pete Hollands on November 1, 2016 at 12:28pm

@Rana:- :-) In this video from 4th January 2012, Ric and I are using Mavlink to tune up the parameters in the plane, and that of course is a bi-directional link.  And yes, it is interesting that our developers have never had much interest in changing the waypoints and mission plan while the plane is flying. (although it may actually be working these days, I've not personally tested it).  I think that is because we have the Logo flight control language.  On outcome of that is that we can select flight plans based on the switches on our transmitter. The list of mission control possibilities goes on and on because Logo is a full computer program language. e.g. The logo language can switch flight plans based on the transmittter switches, or the rudder control.  RTL can be quite intelligent. Our in flight control logic can be exceedingly sophisticated (e.g. Kees's thermalling glider flight plans). MatrixPilot is flying planes and Logo meets much of our needs. I personally don't like to look at a screen when I'm flying the plane. I keep my eyes on it as much as posisble. I think that Quads probably have a greater need for real time mission updates. In MatrixPilot 5.0, we are running the very latest mavlink core code pulled from "upstream". I think it's a case of "Horses for courses". Ardupilot  is super. I also enjoy MatrixPilot. Best wishes, Pete


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