Matthew Coleman
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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

Vario for glider pilots using mavlink/mavproxy telemetry

Started Jun 18, 2012 0 Replies

If anyone is interested in adding a vario (audio beeps depending on rise/fall rate) for mavlink connected autopilot, there is a project here:…Continue

 

Matthew Coleman's Page

Latest Activity

Matthew Coleman replied to Sonay Dalal's discussion Looking for a solar powered drone that can fly away 100s of miles at 50miles/hour+ speed
"Keep this top quality conversation going and you might get to #1 on top content :-)"
Aug 15
Matthew Coleman commented on Matthew Coleman's blog post raspiHUD - Ground based HUD without FPV
"@Bill,  I agree about not doing draw every frame.  That was the disaster that I tried first before going for openGL. There is a style choice on how to create the graphics. SVG is nice but someone still needs to draw it.  I decided to…"
Aug 3

Developer
Bill Bonney commented on Matthew Coleman's blog post raspiHUD - Ground based HUD without FPV
"To improve efficiency don't draw. In APM Planner 2.0 we use svg graphics. They are converetd to a bitmap on loading into the PFD, and then the graphics card handles it. No extra work as this is a supported feature in QtQuick. You can also use…"
Aug 3
Matthew Coleman posted a blog post

raspiHUD - Ground based HUD without FPV

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…See More
Aug 3
Matthew Coleman commented on Matthew Coleman's blog post raspiHUD - Ground based HUD without FPV
"@GliderUAV All those items are possible or already in progress.  It is quite quick to add new things but it is not nicely organised yet.  Configuration files is one thing I need to figure out. Ideally the HUD module has no hard…"
Aug 3
Matthew Coleman commented on Matthew Coleman's blog post raspiHUD - Ground based HUD without FPV
"@Alain, Since the RPi is running linux it can run mavproy and mavproxy modules.  This is much more powerful than the ardustation.  You would need a keyboard but that makes it easier to use.  raspiHUD should sit on top of mavproxy…"
Aug 3
Alain commented on Matthew Coleman's blog post raspiHUD - Ground based HUD without FPV
"Hi Matt, Very nice and interesting project! Thanks for sharing it. I wonder if it would be possible to build a Ground Control Station, something like the ardustation (https://code.google.com/p/ardu-station/), added with your HUD ? I am thinking of…"
Aug 3
GliderUAV commented on Matthew Coleman's blog post raspiHUD - Ground based HUD without FPV
"Hi Matt, That's a nice layout for a HUD. I may want to switch to this setup as well. What would I put on the display? - Altitude in M - Climbrate in M/s - Airspeed Km/h - Motor on or off - Battery voltage in V - Flighttime (starts with motor…"
Aug 2
Matthew Coleman commented on Matthew Coleman's blog post raspiHUD - Ground based HUD without FPV
"That should work with raspiHUD.  The fonts may need to be larger but they are all scalable.   It might be a more readable alternative to minimOSD at that resolution."
Aug 2
evilmacaw commented on Matthew Coleman's blog post raspiHUD - Ground based HUD without FPV
"I have been using the Eyetop Centra  http://www.vrealities.com/products/featured/eyetop-centra set up ,it is cheaper  lower resolution but diopter adj  with dial and low profile ."
Aug 2
Matthew Coleman posted a blog post

raspiHUD - Ground based HUD without FPV

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…See More
Aug 2
Matthew Coleman replied to turdsurfer's discussion Tricopter wagging tail issue (firmware 2.* through 3.1.2)
"TS, I modified my tri putting the blade closer to the hinge.  At the same time I mounted the ESC on the bottom side of the hinge to give it a counterbalance.  Having the ESC mass at the tips gives a bit more rotational momentum so that…"
Mar 21
Matthew Coleman commented on Nick Arsov's blog post AUAV-X1 , a new vision of the PX4 autopilot
"@turdsurfer, There are switch mode supplies all over your system including SBECs and ESCs.  Most of those are handling far more energy and radiating more than the relatively low current buck-boost will.  2.2-2.4MHz is a popular area to put…"
Feb 12
Matthew Coleman commented on Nick Arsov's blog post AUAV-X1 , a new vision of the PX4 autopilot
Feb 12
Matthew Coleman commented on Nick Arsov's blog post AUAV-X1 , a new vision of the PX4 autopilot
"Congrats to Nick for squeezing all that into 30*43mm.  Good to see some efficient engineering. Yes the SMPS generates some noise but it is not the end of the world.  There is a tradeoff between having a remote power module and a remote…"
Feb 10
Matthew Coleman commented on Hamish's blog post Heres a video bound to make you cry
"random thought.  Should the NSA employ trappy?  He has the skills and loves his work.  They have the need to spy.  Everyone wins...."
Jan 16

Profile Information

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

Matthew Coleman's Blog

raspiHUD - Ground based HUD without FPV

Posted on August 2, 2014 at 4:00am 8 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…

Continue

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…
Continue

Fly-by-polar

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?…



Continue

A challenge - An autopilot to fit in this

Posted on March 5, 2011 at 2:53am 31 Comments

 

 

This is the Vladimir models Graphite 2e.  It is a fairly typical skinny, lightweight, efficient fully moulded motor glider.  Despite its 3.1m span there is not much space for anything.

 

THE CHALLENGE - HOW TO FIT AN AUTOPILOT AND TELEMETRY SYSTEM IN A GRAPHITE…

Continue

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