Matthew Coleman
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  • Sweden

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Matthew Coleman's Discussions

Where is the PX4?

Started this discussion. Last reply by Matthew Coleman Oct 11, 2013. 8 Replies

Now 3DR has cornered the manufacturing market for the majority of open source autopilots, I was wondering when it get its act together and actually build some.  Might be a smart move to build stuff…Continue

Tags: sucks, 3DR

Feature Request: Clear indication of actual airframe selected

Started this discussion. Last reply by Matthew Coleman Jul 22, 2013. 2 Replies

Just spent a frustrating half day of novelty crashes before finding that the hexa firmware was loaded instead of quad.  Please add a clear indicator showing which frame firmware is loaded.CLI debug…Continue

Building mavlink in scilab code block

Started this discussion. Last reply by Venkat Gidda Jan 23, 2013. 4 Replies

I am attempting to build the mavlink library in a scilab block to run SITL.When scilab compiles, it only finds the mavlnk headers if I name the absolute directory.  Changing the working directory…Continue

30 minute timout on Xbee link. Anyone have this problem?

Started this discussion. Last reply by Sgt Ric May 26, 2012. 3 Replies

I have had several long flights when the Xbee 2.4GHz S2 communication stopped around 30minutes after power up.  This may be something to do with ubunutu/netbook settings instead of the Xbees. I…Continue

Tags: timeout, Xbee


Matthew Coleman's Page

Profile Information

About Me:
Electronics and software engineer
Please tell us a bit about your UAV interest
Large autonomous gliders
Somewhere in England

Matthew Coleman's Blog

The uNode

Posted on May 3, 2015 at 4:35pm 29 Comments

A distributed and scalable autopilot architecture is attractive to me due to space and sensor positioning demands on my airframes.  The existing range of autopilots simply doesn't fit.  The uNode (microNode) is the result of my desperate attempts to fix this.  uNode is a very cutdown version of Pixhawk with a little bit of AUAV-X2…


raspiHUD - Ground based HUD without FPV

Posted on August 2, 2014 at 4:00am 9 Comments

Being able to see what the autopilot is thinking in real time is a valuable tool for tuning autopilot behaviour.  FPV is normally used for this but I can't use it on my aircraft.  A good solution is to use minimOSD on the ground driving a video monitor.  I have had a few flights with this and it works very nicely.  minimOSD is amazing but still limited in what it can…


Anything you want mixing

Posted on May 16, 2013 at 3:10pm 5 Comments

I would like to introduce the community to a mixer method used to fly complex aircraft in manual, fly-by-wire and autonomous modes.

The main challenges of mixing are:

  • Flexibility to do anything you want.
  • Easy to use and prevents mistakes
  • Fly-by-wire capable.
  • Field…


Posted on April 28, 2013 at 10:18am 65 Comments

Airspeed control is critical when flying sailplanes.  You want to fly close to stall but never beyond it, since that will normally cause a tip stall and great loss of energy.  How do you teach an autopilot to fly on the edge of stall?

One solution is to teach the autopilot about the aircraft…


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