Jolyon Saunders
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  • Sydney
  • Australia
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  • Rowan Watkins
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Jolyon Saunders's Groups

Jolyon Saunders's Discussions

Freaky Phase angle on 450

Started this discussion. Last reply by Jolyon Saunders May 7, 2013. 17 Replies

My 450 has a wobble on the pitch axis, unless 42 degrees of H_PHANG is added. It appears as a rapid clockwise toiletbowl effect, which subsides as H_PHANG approaches 42 degrees. If H_PHANG exceeds 42…Continue

Arducopter - Trad Heli development

Started this discussion. Last reply by Rob_Lefebvre May 14, 2013. 53 Replies

 This is a place for discussion, information, questions and answers related to the development of Arducopter for Trad Heli.Continue

Trad Heli FPV discussion

Started this discussion. Last reply by Rob_Lefebvre May 1, 2013. 47 Replies

Hey all, here is a place to post details and info of your FPV setups, questions, vids etc.My setup is as follows:Trex 450 PRO frame stretched to 480APM2.5 with UBLOX GPS and power moduleTarot DFC…Continue

Tags: arducopter, heli, helicopter, FPV

Fixing the gap with the APM 2.5+ side entry case

Started this discussion. Last reply by Eric S. Jul 12, 2013. 1 Reply

I got my APM last night, and I'm very impressed with this hardware as a whole. I did notice that there was a problem with the way the case looked. The case came cracked and the gap around the side of…Continue

Tags: side entry, apm, fix, gap, case

 

Jolyon Saunders's Page

Latest Activity

Jolyon Saunders commented on Janis Kuze's blog post How to configure and use Ardupilot simulator (SITL) with UgCS
"Thank you for posting this!!"
Mar 14
Jolyon Saunders commented on Josh's blog post New Audi 6 car commercial mocks Amazon uav delivery and makes uav's looks dangerous
"I was hoping the as would be funnier. What is actually funny is the irony in their slogan "truth in engineering""
Mar 6
Jolyon Saunders commented on Chris Anderson's blog post This is what happens when you show 14-year-old boys how to skywrite with a drone
"Bahaha this is hilarious"
Mar 4
Jolyon Saunders commented on Charles lakins's blog post Storm32 BGC gimbal
"Looking good! I'm also in the process of building my gimbal after reading about integration with arducopter. Storm32 is looking to be a very good BGC option for users in the future."
Mar 4
Jolyon Saunders commented on Thomas J Coyle III's blog post Drone Maker 3D Robotics Raises $50 Million In Latest Round
"Exciting news! Congrats to Chris, Jordi and the 3dr team!! This is going to be a world changing company"
Feb 27
Jolyon Saunders commented on HeliStorm's blog post Soon to be Released: Full HD Capable Micro Brushless Gimbal for 200 Sized Quads
"Thanks Gary, I'll put my order in also. I've had good luck with them too, but as my friend says about goodluckbuy -- "good luuuuck!! Bye""
Feb 25
Jolyon Saunders commented on HeliStorm's blog post Soon to be Released: Full HD Capable Micro Brushless Gimbal for 200 Sized Quads
"To clarify my last comment, the overpriced motors I were referring to were these: http://m.ebay.com/itm/291366891119?nav=SEARCH"
Feb 25
Jolyon Saunders commented on HeliStorm's blog post Soon to be Released: Full HD Capable Micro Brushless Gimbal for 200 Sized Quads
"It seems those 1806 motors mentioned earlier are not available until 20 march (pre order). They are also very overpriced. The motors in the link below are only $13 each and weigh 22g. They are also available…"
Feb 25
Jolyon Saunders commented on HeliStorm's blog post Soon to be Released: Full HD Capable Micro Brushless Gimbal for 200 Sized Quads
"I'm getting one of these for my heli :)"
Feb 23
Jolyon Saunders left a comment for Rowan Watkins
"Correction to my last, to my best knowlege spline is supported on older boards, sorry for wrong info."
Jan 18
Jolyon Saunders left a comment for Rowan Watkins
"I accidentally posted my reply on my profile instead of yours so I'll repost it here. Hi Rowan, What a fantastic project! Looks like an original idea, and it will be awesome to see it in the air!! The GPS is best placed put away from the…"
Jan 17
Jolyon Saunders left a comment for Jolyon Saunders
"Hi Rowan, What a fantastic project! Looks like an original idea, and it will be awesome to see it in the air!! The GPS is best placed put away from the mast because the metal in the rotor will block satellites. Also, if your mag is built into the…"
Jan 17
Rowan Watkins left a comment for Jolyon Saunders
"Thanks Joly, understood, good points. The DDVP TR will be going in the next incarnation of our unique StopRotor UAV, see http://www.stoprotor.com.au/ This concept has been in development for a number of years and we are currently testing a 2…"
Jan 12
Jolyon Saunders left a comment for Rowan Watkins
"Some things worth considering: 1. Ensure the tail motor is governed otherwise tail performance becomes very unpredictable 2. Use as light a motor as you can safely get away with. Unlike the main motor, it doesn't pay to use an overpowered tail…"
Jan 11
Rowan Watkins left a comment for Jolyon Saunders
"Thanks Joly, I am working on a project using a Trex700E. I have it flying with a PixHawk and it has the conventional shaft drive tail. I note that both you and Rob have had success with DDVP TR on a range of helicopters and I'm keen to convert…"
Jan 11
Jolyon Saunders left a comment for Rowan Watkins
"Hi Rowan, I'm from Sydney also. I'm away for work for the next few months but I'm happy to discuss DDVP with you"
Jan 10

Profile Information

About Me:
I'm an **aspiring** member of the Arducopter dev team. I am currently yet to make my first contribution to the project, but have a number of prospective contributions in the pipeline.
Please tell us a bit about your UAV interest
Traditional helicopter development
Hometown:
Sydney

Jolyon Saunders's Blog

3D printer + TradHeli + PX4

Posted on October 26, 2014 at 3:05am 8 Comments

At last, I have something to share with you all. Some details as to how I mount my autopilot boards to my helis. Mounting these boards on helis has been a touchy subject, but so far I have had pretty decent luck. I am yet to experience 'the leans' with this method - the unpredictable variation of AHRS estimate caused by vibration. This also gives me a chance to show off my hand modeling skills ;)…

Continue

Comment Wall (3 comments)

At 10:01pm on January 11, 2015, Rowan Watkins said…

Thanks Joly,

I am working on a project using a Trex700E. I have it flying with a PixHawk and it has the conventional shaft drive tail. I note that both you and Rob have had success with DDVP TR on a range of helicopters and I'm keen to convert my 700 to this configuration.

Do you have any advice for this type of set up? Rowan

At 4:06am on January 12, 2015, Rowan Watkins said…

Thanks Joly, understood, good points.

The DDVP TR will be going in the next incarnation of our unique StopRotor UAV, see http://www.stoprotor.com.au/

This concept has been in development for a number of years and we are currently testing a 2 meter long fiberglass version with a 600 size rotor, 700 engine and 800 tail boom.

This aircraft is designed to operate as either a fixed wing or rotary wing and convert in-flight between modes using a Patent Pending method.

We will be using the DDVP TR to enhance control during this transition phase and provide normal Anti-Torque in helicopter mode. During fixed wing flight, the tail rotor will be stopped and the main rotor is locked to operate as fixed wings.

Over the last few years we have proven the various elements of this aircraft using a number of radio controlled models, including an in-flight start from fixed to rotary wing operations.

We have flown numerous rotary wing flights and are slowly pushing out the flight envelope which is a challenging process as it involves learning about the machine and just as importantly, how the PixHawk and ArduCopter software affect the handling.

In conjunction with the real world models, we have done extensive testing in X-Plane and achieved significant correlation between the virtual and real world models. X-Plane has also proven to be a great tool for training prior to any real world tests.

As these models take a long time to build, I have also been testing ArduCopter on a Trex500 and have a few questions about it.

I currently have the GPS pedestal mounted on the Trex body, close to the rotor mast, but have recently been having issues with the GPS signal. Do you have any recommendations about GPS placement?

Also, I can't get Spline Nav to work on the 500.

The 500 is running a Hobby King HKPilot Mega 2.7 with ArduCopter 3.2. I know the APM 2.7 is not the same as the PixHawk, is this a possible reason why spline won't engage?

Again, thanks for you time and input.

Regards

Rowan

At 11:06pm on January 17, 2015, Jolyon Saunders said…
Hi Rowan,

What a fantastic project! Looks like an original idea, and it will be awesome to see it in the air!!

The GPS is best placed put away from the mast because the metal in the rotor will block satellites. Also, if your mag is built into the GPS then it's beat to keep it away from all metallic objects and all cables. I mount mine on a 3D printed bracket which is cable tied to the tail boom.

I'm pretty sure spline isn't compatible with older boards like APM. Pixhawk has a much more powerful processor which supports many more firmware features that are always turned off on APM boards. It isn't possible to run the newer features without a more powerful board.

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