Developer
Jason Short
  • Male
  • San Francisco, CA
  • United States
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Jason Short's Groups

Jason Short's Discussions

Algorithm needed to manage deceleration

Started this discussion. Last reply by Scott Berfield Oct 20, 2012. 17 Replies

Arducopter 2.2 beta

Started this discussion. Last reply by Martin Szymanski Feb 2, 2012. 1296 Replies

Arducopter 2.1.1 alpha

Started this discussion. Last reply by Venkat Gidda Dec 2, 2012. 814 Replies

 

Jason Short's Page

Latest Activity


Developer
Jason Short commented on Randy's blog post ArduCopter 3.2 Released
"Now's the time to switch over to the EKF by default. I have and have been very happy with it. Congrats to all!"
Nov 24

Developer
Jason Short commented on Bob's blog post Sunk DJI Phantom Found In The Ocean After One Year
"unstabilized gimbal is a sign of the times."
Nov 16

Developer
Jason Short commented on Randy's blog post ArduCopter 3.2 ready for wider use
"Yes EKF is very flyable, but disabled by default. In fact it outperforms DCM. Congrats Randy on the release! Jason"
Nov 7

Developer
Jason Short commented on Tim's blog post CBS This Morning piece about NYPD working on ways to disable drones
"I heard the Secret Service uses a "Drone Gun", basically a light net they can blast out with a shotgun. "
Oct 31

Developer
Jason Short commented on Oscar Avellaneda-Cruz's blog post Lost Developer Edition Iris on ebay...
"Ha, my friend's IRIS is in the bay...."
Sep 10

Developer
Jason Short commented on Chris Becker's blog post Formation Flying Mesh Network Demo
"Awesome!"
Jul 7

Developer
Jason Short commented on AKRCGUY's blog post Former DJI CEO Joins 3D Robotics
"@P13 A stable tune will return to level in stabilize when you jerk the stick suddenly in roll or pitch.  I start with a Stab_P of something conservative like the default 4.5. Then a conservative Rate_D of .005 Try a rate_P of .1 and increase to…"
Jun 26

Developer
Jason Short commented on AKRCGUY's blog post Former DJI CEO Joins 3D Robotics
"And BTW, Colin has been terrific to work with and I'm really excited he's here at 3DR! Jason"
Jun 26

Developer
Jason Short commented on AKRCGUY's blog post Former DJI CEO Joins 3D Robotics
"@P13 I spent some time with Leonard last week testing and reviewing Auto-tune. What I learned was Auto-tune won't crash your copter if you start with a stable tune, but it will crash a copter that isn't properly spec'd.  Large…"
Jun 26

Developer
Jason Short commented on Chris Anderson's blog post DIY Drones teams dominate Sparkfun Autonomous Vehicle Competition
"Leonard's frame is 3d printed.  There were two bad crashes. a 550 heli didn't have redundant power and looks like the BEC browned out keeping up with the servos killing power to the pixhawk. It flew an amazing first run. It crashed in…"
Jun 22

Developer
Jason Short commented on Chris Anderson's blog post IDEO-designed quadcopter with 3G wireless on Kickstarter
"Sixty patents? These guys sound evil. Perhaps the drone is a formality and the real aim is to troll the industry. "
Jun 10

Developer
Jason Short posted a video

Gimbal Demo

Custom Tarot Gimbal control
Jun 9

Developer
Jason Short commented on leonardthall's blog post Printed high speed AVC copter and crash
"Hi Leonard,  I'd be glad to try and print some parts for you. I have 3 12hour parts myself to print this week, But I could squeeze yours in if needed. Just send me the STL.  Jason"
Jun 8

Developer
Jason Short commented on Daniel Lukonis's blog post Solar Drone Experiments - How much more battery life do you get by adding solar panels to your quad?
"It looks like you've added wings which will create lift and other unwanted aerodynamic effects. Look at umbrellas that are made for high winds. They let the air flow through them with special flaps to prevent big pressure deltas. I'll bet…"
May 31

Developer
Jason Short commented on Chris Anderson's blog post Connecting your phone, tablet or laptop to APM/Pixhawk using Bluetooth
"Magnus,  All you need to do is connect a 3DR Radio module to the BT module like Chris has shown above. Power it with 5V and you're done. I use a Lipo and cheap BEC from HK. I have this embedded in my RC and use it all the time! Jason"
May 2

Developer
Jason Short commented on Andrew Tridgell's blog post An open letter to Paul from witespy
"Hi Tridge,  It pains me that you had to write this. I'm sorry to see it.  I've been working on this project almost 5 years now and I've met so many great people, especially Tridge. But the probabilities of coming across bad…"
Apr 30

Profile Information

About Me:
Director of Design at 3DR.
Please tell us a bit about your UAV interest
Love to fly
Hometown:
San Francisco

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Jason Short's Blog

Flying Golden Gate Park

Posted on July 24, 2013 at 10:00pm 10 Comments

ACM at the AVC

Posted on September 6, 2012 at 9:41am 19 Comments

ArduBalance sneak preview

Posted on August 7, 2012 at 9:30am 36 Comments

Arducopter 2.7 Auto-Flip

Posted on August 1, 2012 at 11:00pm 16 Comments

Comment Wall (12 comments)

At 8:04pm on October 12, 2009, Doug Connell said…
jasonshort - thanks for sharing your experience. I have added lenses to the flip externally and they work ok, would you mind sharing your lens adaptation for the flip? I have been researching the ardupilot and trying to understand how it might work with our twin easystar - maybe I should just jump in and get it. thanks again for your thoughts.
At 1:07pm on October 29, 2009, Matt Fisher said…
Hey man wondering if you have flight tested your AIR app yet. Would love to get my hands on the source - even just the artwork, it looks amazing. Great to have another Flash dev on here to toss ideas too.
At 6:18pm on November 7, 2009,
3D Robotics
Chris Anderson
said…
Dang, Jason, it's windy in SF today! You're a brave man for even trying to fly near the water...
At 6:19pm on November 7, 2009,
3D Robotics
Chris Anderson
said…
Did you recover the plane? I dunked one a few months ago. Tip: rinse *everything* in tap water ASAP before it dries. Otherwise you'll get corrosion.
At 7:13pm on April 7, 2010, Bill Jenkins said…
Hi Jason,
I saw a post concerning rc cars. Well, that's what I want to do but I now understand that this is more complicated than I thought due to the fact that cars move slowly and the GPS has a hard time with that. I understand that one needs other sensors like magnetometers, obstacle sensors and etc. I was wondering if you have seen a post where some nice person has listed the components used and the codes. I was kind of excited to do this but I'm starting to think that the only way would be to have someone who understands it to build it for me or walk me through it. I was thinking that an arduino controller would connect to the ardupilot and the ardupilot would connect to the RC.
I thought I would ask you if you had any suggestions on this.
Thanks,
Bill Jenkins
At 10:53pm on April 7, 2010,
Developer
Jason Short
said…
Sorry I don't. I would Start with the encoder for the wheels. These usually use a hall effect sensor and a tiny magnet attached to the wheel or other rotating part. Maybe that is a hint that could lead you to some example projects.
At 11:06pm on April 7, 2010, Bill Jenkins said…
Thanks for your reply. I'll be sure to add anything that I find useful to the forum.
Bill
At 11:51am on April 9, 2010, Dustin Romero said…
wouldn't you rinse in distilled water?
At 7:54am on June 19, 2011, Denny Rowland said…

Jason

Great to see the work in progress. I have a new APM that I bought ready assembled and programmed  few months back, it was a little too unstable for my Flying Camera Mount designs that I am working on. However I have just uploaded the latest code and will be soon giving it another try. My normal test FC is a KK Minso Kim board that has no bells and whistles so I always have a benchmark to test and evaluate the aerodynamics. I then fit a MK board with the full kit. I am desperate to get away from MK and hopefully your code will be the answer. The thing that I thought might interest you is the fact that my MK boards are modified to take 67 deg/sec Gyros as I need to cage the models movements to stay within the 20 deg/sec that the camera mount uses. It is of course a bit risky if the mk gyros saturate as that would lead to a crash but I keep the stick inputs to a very low limit. The fast response and low noise seems to be the key to great stabilisation, plus the fact that the arms are 1 meter across with highly responsive motor/prop combination. The thought occurred that maybe we could develop a super stable version of AMP just for Aerial Video. The 500 deg /sec gyro does have amplified signal at 110 deg/sec but I expect that it will amplify the noise as well.

At 5:17pm on December 19, 2011, Geir Engebakken said…

I see in the wiki that to enable SuperSimple :

"You can enable this option by setting the parameter named RESET_SIMPLE to 1 ( 0 = disabled)"

Isnt the parameter called SUPER_SIMPLE?

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