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 Robert Merki's discussion Tell me what pains you about drones/UAVs. (VENT AT ME)
"The lack of a capable and robust autopilot system that fits inside my aircraft."
Nov 17
Matthew Coleman commented on BirdsEyeView Aerobotics's blog post FireFLY6 Demonstrates 45min Flight Time
"So now more is better then why not X8 instead of Y6? The four rear props could rotate together with the front ones so that the props are doing real work instead of just adding to the drag.  The problem is that they are directly in the wash from…"
Oct 17
Matthew Coleman commented on BirdsEyeView Aerobotics's blog post FireFLY6 Demonstrates 45min Flight Time
"I might just have thought myself out of the tri/quad copter idea: Fewer, bigger, slower and more efficient props means lower pitch speed which doesn't work well for forward flight.  A 12V 1800kV 5.5" prop has a pitch speed (no…"
Oct 15
Matthew Coleman commented on BirdsEyeView Aerobotics's blog post FireFLY6 Demonstrates 45min Flight Time
"In the interests of a simple budget solution for a wider audience at the expense of robustness, maybe a quad would be a good compromise.  If you chose to rotate the back props also you could get less drag in forward mode.  You might also…"
Oct 9
Matthew Coleman commented on BirdsEyeView Aerobotics's blog post FireFLY6 Demonstrates 45min Flight Time
"What an awesome aircraft.  Definitely has a high "want one" factor.  Would be great fun to play with the acrobatics together with the power vectoring. It looks like there are two physical controllers onboard and a hardware…"
Oct 7
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

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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