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 Mauricio's blog post Aeromapper 300 mapping drone –1.5 hr endurance with multisensor capabilities
"Yes Mark, there are a zillion ways to skin this cat.  The Aeromapper300 is just one way.  I think it's great that people are creating commercial products from an open-source basis.  After all, this is what Android is,…"
12 hours ago
Andrew Rabbitt commented on Mauricio's blog post Aeromapper 300 mapping drone –1.5 hr endurance with multisensor capabilities
"People are seeming to forget that for many projects that require orthomapping, spunking $10k on a system is firstly, only a small part of the operating cost - it probably only represents a week or two of a professional's time - and secondly,…"
14 hours ago
Andrew Rabbitt commented on Andrew Rabbitt's blog post Introducing HDwing 4 - my motor-glider for high altitude balloon (HAB) launch
"It's my own design folding prop based on a HK CF blade for want of anything better.  I made up a couple of samples but it needs some further work. More info here, Kevin"
Saturday
Andrew Rabbitt commented on Chris Anderson's blog post Angela Merkel admires an IRIS
"You're making a schoolboy error if you think Mr Turnbull is stupid."
Saturday
Kevin Nikolaus commented on Andrew Rabbitt's blog post Introducing HDwing 4 - my motor-glider for high altitude balloon (HAB) launch
"What kind of prop is that? It looks awesome."
Friday
Andrew Rabbitt commented on Chris Anderson's blog post Angela Merkel admires an IRIS
"Malcolm is saying, "look at this amazing s#!^ we got from the Yanks the other day, Angie!" Angie replies, "Ach Ja, Ich hab' mein schon auf Ebay bestellt""
Nov 18
Andrew Rabbitt commented on David Anders's blog post Woman snapped sunbaking by real estate drone
"I'll bet the real estate agent was quite happy with all the extra publicity they got for free.  I wonder whether they provoked her into creating the stink? Want to buy a house in Mt Martha, David?  The neighbors are great! :) "
Nov 17
Andrew Rabbitt commented on Bob's blog post Sunk DJI Phantom Found In The Ocean After One Year
"Will archaeologists be able to read SD cards in 2000 years time when they dig up these relics of the 21st century?"
Nov 16
Andrew Rabbitt commented on Winfried Rijssenbeek's blog post Contra-rotating rotors as plan B Update of the Humming Man Project
"I must admit, I'd like to see the whirling things somewhat above my head if I was going to fly it..."
Nov 14
Andrew Rabbitt commented on Chris Anderson's blog post Google leasing NASA Moffet Field for drone, space research
"Isn't that the ideal space for drone development as it is?  It's an indoor free-for-all, as far as the FAA go, but it doesn't cost the gazillions to reclad it."
Nov 11
Andrew Rabbitt commented on Jordan Mack's blog post UAV Atmospheric Satellites
"Solar PV is already into the 40%'s in terms of efficiency, although they are obscenely expensive.  Perpetual flight is already a reality, but with a payload that actually has to do something useful, that might be a different story."
Nov 11
Andrew Rabbitt commented on Chris Anderson's blog post Google leasing NASA Moffet Field for drone, space research
"Coats are kept on hangers.  Aircraft are kept in hangars... ;)"
Nov 10
Andrew Rabbitt commented on Jordan Mack's blog post UAV Atmospheric Satellites
"I suspect the main problem with these solar critters is that the power consumption of the payload is a gazillion orders of magnitude more than what's required to keep it in the air.  Presumably they're only good for flying to…"
Nov 9
Andrew Rabbitt commented on Jordan Mack's blog post UAV Atmospheric Satellites
"Mine is already flying up there too.  I'll bring it down sometime in a few decades to show you all! ;)"
Nov 8
Andrew Rabbitt commented on Chris Anderson's blog post Penguins like Rovers when they're dressed up like chicks
"I think they mistake it for grandmama on her mobility scooter, hence the young'uns give it attention and the grown-ups are wondering why the Alzheimers set in so quickly."
Nov 2
Andrew Rabbitt replied to Michael Levesque's discussion Possible Composite X8 in the group X8
"I've been working on a wing design that's quasi-Skyfun size (1000mm span) but I keep running into MTOW/payload issues with the equipment I want to have on board.  I'm beginning to think I need to scale it up to achieve my goals.…"
Oct 29

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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