Andrew Rabbitt
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  • Melbourne, Victoria
  • Australia
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Andrew Rabbitt's Discussions

Logging airspeed on 2.74 onwards...?

Started this discussion. Last reply by Andrew Rabbitt Feb 6. 2 Replies

Does anyone know which parameter group I can find airspeed to log (passively). I have looked in CTUN and NTUN but neither appear to have this listed. Any hints and tips here...?

APM in a 250

Started this discussion. Last reply by Rob_Lefebvre Jan 20. 8 Replies

The crazy man in me is trying to stuff an APM into a cheapie HK250GT as a method to waste an inordinate amount of time. (and likely also money) It is a great lesson in weight reduction and…Continue

Arduino/Ardupilot IDE "hangs" whilst attempting to complie

Started this discussion. Last reply by Andrew Rabbitt Aug 9, 2013. 1 Reply

I'm trying to compile a (very) subtly modified version of Arduplane 2.74b using the IDE downloaded from the Arduplane website (1.0.3) but it hangs when I try to compile.  Actually, it doesn't hang…Continue

Mapping servo neutral and end points...?

Started this discussion. Last reply by Andrew Rabbitt Aug 28, 2013. 5 Replies

Does anyone know any way of mapping the servo mid and end points that APM uses?I have modified elevons on my Skyfun which, unfortunately, have a limited down travel.  If the elevon servo forces it…Continue

 

Andrew Rabbitt's Page

Latest Activity

Andrew Rabbitt commented on Rob_Lefebvre's blog post Arducopter Flies Gas Powered Helicopter
"Really nice work, Rob!  I'm impressed!  Well done!"
Sep 22
Andrew Rabbitt commented on wayne garris's blog post Techwing update and maiden
"Nice one Wayne!  I'm real keen to learn how effective your slotted LE's are in the real world.  After playing about with airfoils, vortilons and wing fences in OpenFOAM, I'm about to try some slots.  I plan to post up…"
Sep 22
Andrew Rabbitt commented on Hai Tran's blog post LiPO Fire Testing
"I hope you didn't pay money for the music..."
Sep 8
Andrew Rabbitt commented on Chris Anderson's blog post Richard Branson invests in 3DR, drones invade Necker Island
"Great news Chris! Whats the CAA like on Necker...?"
Sep 6
Andrew Rabbitt commented on Chris Anderson's blog post Gas-powered quadcopter second Pixhawk-based finalist for The Hackaday Prize
"That's a vibration study from hell! I'd wish him luck with getting the belts to stay on, but frankly, I think it's a forlorn hope and a total redesign is on the cards..."
Sep 3
Andrew Rabbitt commented on Quadzimodo's blog post Need to Know - Export Controls
"Export controls are all about not letting the Kims, Sadams and Osamas of the world get their hands on dangerous and threatening technology.  Since Pakistan has the bomb, Uncle Kim has been flying his drones about in Sth Korea's Airspace…"
Sep 3
Andrew Rabbitt commented on Quadzimodo's blog post Need to Know - Export Controls
"Oh, it seems Wassenaar is the swanky suburb of The Hague.  I'll bet they have nice hotels, restaurants and other bureaucrat-magnets there. When we finally have the Ferguson Accord or the Pripyat Agreement we'll know the world is back…"
Sep 2
Andrew Rabbitt commented on Quadzimodo's blog post Need to Know - Export Controls
"Wow, so it's the club of nations who want to shackle their high-technology industries in bureaucratic chains and red-tape to prevent the unpreventable!  Never mind that most of this technology can be sourced from China, Taiwan, Israel,…"
Sep 2
Andrew Rabbitt commented on Hai Tran's blog post Customs seizes 80k worth of Drones
"Your trust and faith in state bureaucracy is heartwarming, Robert. Notwithstanding the horse was seen to have bolted, after wandering about the wilds of the non-Western world, it has subsequently died peacefully of old-age."
Sep 2
Andrew Rabbitt commented on Austin H's blog post Micro Aerial Vehicle GPS denied navigation
"That is truly amazing!  I am ever so slightly gobsmacked by that.  Congratulations to the development team!"
Sep 1
Andrew Rabbitt commented on Hai Tran's blog post Customs seizes 80k worth of Drones
"It's worth noting that export restrictions often include the export of software and know-how.  I'm not sure how the Australian rules are worded, but even downloading, uploading, or transmitting data related to restricted items can be…"
Sep 1
Andrew Rabbitt commented on Thomas J Coyle III's blog post Bend boy’s drone among those cited as ‘emerging hazard’ for forest firefighters
"Yes, most (anglo) places you need to register your dog.  The only reason the law requires registration is so it becomes a legal entity that "the law" can "efficiently" act upon.  Same reason you are forced to register…"
Aug 28
Andrew Rabbitt commented on Thomas J Coyle III's blog post Bend boy’s drone among those cited as ‘emerging hazard’ for forest firefighters
"With the exception of age, the same can be said of elected office, Jesse"
Aug 26
Andrew Rabbitt commented on Jose Luis Cortes's blog post Huge quadcopters can be attractive alternative to fixed wing for mapping and survey
"...or fuel cell, or solar panels... ;) Anyway, the beauty of fixed wing aircraft (apart from the fact that, unlike 'copters, they can be physically beautiful), is the much lower count of dangerous Dr Evil whizzy things to keep it airborne and…"
Aug 19
Andrew Rabbitt commented on Jose Luis Cortes's blog post Huge quadcopters can be attractive alternative to fixed wing for mapping and survey
"Wow, 112 hours of 3D printing!  When you could get the parts machined from solid inside an hour on a good CNC mill.  Not intending to be critical of your choice Jose, but it does confirm my suspicion about the how 3D printing isn't…"
Aug 18
Andrew Rabbitt commented on Chris Anderson's blog post What UAVs can learn from manned aircraft
"Seriously Rob, is that the best you can do?  Go all ad-hom to make your point? Of course money transactions increase liability, but to third parties?  Come on, if this is your claim, then educate us dumb foreigners with some references and…"
Aug 13

Profile Information

About Me:
Mechanical Engineer with more than a decade in electronic engine control development and application in the OEM sphere. I am a lapsed PPL(A) and currently an experimental aircraft builder (Van's RV-8). UAV's are a fascinating diversion from rivetting...
Please tell us a bit about your UAV interest
Inspired by press articles earlier this year on near-space ballooning, I would like to one day send a UAV glider aloft for a positionable return to land. I'm sure others have similar ideas.
Hometown:
Melbourne, Australia (sometimes)

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Andrew Rabbitt's Blog

Telemetry Radio Range testing with home-made dipole antenna

Posted on April 28, 2014 at 11:10pm 14 Comments

On Sunday I spent the morning self-consciously traipsing around my brother's neighborhood with an apparently wierd collection of hand-held electronics and foam in the form or my APM, battery and a Hextronic 3DR knock-off 915MHz telemetry radio and Skyfun fin. We left a laptop on the top floor of the house running APM Planner with the base station radio connected directly to the USB port and using a standard "duck" monopole…

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1300kJ/kg Battery - from the Too-Good-to-be-True Newsdesk

Posted on April 28, 2014 at 5:01pm 15 Comments

This smartphone-sized pocket battery is being marketed for emergency starting of cars with flattery-battery-syndrome, but if the manufacturers specs are believable it would make a fantastic power pack for quads etc.  More than…

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Mercedes Benz vision systems research

Posted on October 4, 2012 at 9:30am 4 Comments

I saw a feature about Mercedes-Benz collision avoidance vision systems research on the Telly here in Germany where I am at the moment. 

 

This particular project uses two cameras to create stereo vision.  Comparing the two images is used to detect pixels that represent motion that could be hazardous to the vehicles current path.

Unfortunately,…

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Mould Plug CNC Machining for HDwing4

Posted on May 24, 2012 at 10:03pm 5 Comments

Since the topic of CNC mills has raised its head here, I thought I'd share this with the DIYDrones community.

One of the things those who are considering this need to be aware of is that the toolpathing of complex shapes isn't a trivial exercise.  I would be interested to know if anyone has experience with any open-source surfacing toolpathing packages - please comment below! 

I am fortunate to have access to MasterCAM V9 - old-fashioned as it is - but…

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Comment Wall (3 comments)

At 6:15am on February 11, 2012, Paul Marsh said…

Oops.  Wrong URL in my PM to you.  Try this:

http://www.poweredmodelairplanes.com/outline.wrl

Paul

At 6:32am on June 17, 2013, Acorn said…

Andrew - Thank you for commenting on my BLOG DIY Passive Gimbal.

How about whacking four free-spinning electric motors on it? One flanking each axis? Just so it is balanced. Would they cancel eachother out? Or would making them spin CW / CCW to each other be better?

At 5:57pm on November 20, 2013, Justin Martin said…

Hello Andrew! Thanks for the support, and offer. I will definitely keep you in mind if anything comes up. The Idea behind the albatross is open. By this I mean, it has specific goals and design elements, however in the long run I would truly like innovations to be customer based. For instance, If customers started laser cutting their own internal storage shelves/formers, and/or other mods, such as a dome/nose adapter.

If the Pro version every comes to be, I will definitely be needing some specific arts, such as retaining clamps and rings for easy quick-release style components.

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