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Mark Harrison
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  • Oakland, CA
  • United States
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Mark Harrison's Groups

Mark Harrison's Discussions

Odd rise/descend behavior in loiter, alt hold modes

Started this discussion. Last reply by Jason R Jun 14. 3 Replies

The first time I fly, position holding is perfect in all axes.Subsequently (after I put it to another mode and return it to loiter [?]), the altitude does not hold.  When the stick is centered, it…Continue

PX4, not responding to stick movement commands?

Started Jul 6, 2013 0 Replies

I've verified using qgroundcontrol that the PX4 is getting radio input, and calibrated the sticks.  I can arm/disarm, and control throttle.But, no motion sticks (rud, ele, ail) seem to take effect.…Continue

PX4 + wifi?

Started Mar 4, 2013 0 Replies

Any easy way to interface a PX4 to wifi?Continue

Preparing some feedback on the Texas Drone Proposal, feedback solicited!

Started this discussion. Last reply by Grant Goldsmith Jul 15, 2013. 2 Replies

I've started an analysis and write-up of the legislation here:…Continue

 

Mark Harrison's Page

Latest Activity

Karan Chawla commented on Mark Harrison's blog post Aerotestra Hugo Update
"Sorry about bringing back an old thread, but I've been doing some materials research and would like to know more about the manufacturing involved in making this quad, I'd be really thankful if someone could shed some light on the…"
yesterday
Cliff-E commented on Mark Harrison's blog post Disney applies for three drone-related patents
"can't believe it took 18+ mos to this point and 1st flights back in '10. @Craig: thanks, we'll be talking soon... & to the 3DR team and APM devteam, keep up the excellent work guys... :) @monkeynutz: convincing a multibillion…"
Aug 24
Quadzimodo commented on Mark Harrison's blog post Disney applies for three drone-related patents
"Gary - I hadn't seen that London Star Trek thing.  Very cool! Tearig - Drone supported marionette has been done. Here are two examples. and "
Aug 23

T3
Stephen Gienow commented on Mark Harrison's blog post Disney applies for three drone-related patents
"@Craig- But I don't want my arducopter to strike anything!"
Aug 23

Admin
Gary Mortimer commented on Mark Harrison's blog post Disney applies for three drone-related patents
"He's a bit late isn't he?"
Aug 23

3D Robotics
Craig Elder commented on Mark Harrison's blog post Disney applies for three drone-related patents
"ArduCopter strikes again!! Go Cliff!!!  http://diydrones.com/profile/CliffW"
Aug 23

Admin
Gary Mortimer commented on Mark Harrison's blog post Disney applies for three drone-related patents
"This happened in week the FAA announced a flight of two sUAS in a range to see if night flight of two RPAS was safe and possible. I kid you not, they were jolly proud of the trial. This flight in the centre of London underneath the approach to…"
Aug 23
F. C. Bearsch "Tearig" commented on Mark Harrison's blog post Disney applies for three drone-related patents
"This is very demonstrative of what the USPTO patent market has become, please list the examples of the prior use, as I think it is our job as to serve our community to show either the prior example or that this is obvious so that irrelevant patents…"
Aug 23

Admin
Gary Mortimer commented on Mark Harrison's blog post Disney applies for three drone-related patents
"Yes especially the floating pixels not much research done by the Disney folks."
Aug 23
monkeynutz commented on Mark Harrison's blog post Disney applies for three drone-related patents
" always with the patents.. whatever.. all this stuff has been done before. "
Aug 23

Moderator
Mark Harrison posted a blog post
Aug 23

Moderator
Mark Harrison commented on Jorge Brites's blog post Refurbish a damaged 4S battery - Do not try this!
"Hi Theo, the idea of a battery tutorial blog post sounds great.  Why don't you put together a tutorial for us?"
Aug 22

Moderator
Mark Harrison commented on Jorge Brites's blog post Refurbish a damaged 4S battery - Do not try this!
"I agree with John's note:  The batteries are more dangerous while charging than in any other situation. I had a cell puff, pop, and catch on fire while charging. Fortunately: - it was a 3S 500 mah, so not the biggest.  But it still…"
Aug 21

Moderator
Mark Harrison commented on Jorge Brites's blog post Refurbish a damaged 4S battery - Do not try this!
"I had one lipo short, on the very first battery I swapped connectors on. Lesson learned: don't snip the positive and negative leads at the same time!"
Aug 21

Moderator
Mark Harrison commented on Jorge Brites's blog post Refurbish a damaged 4S battery - Do not try this!
"I think this is an interesting and informative post.  The author did a good job explaining the potential hazards. Good job, Jorge!"
Aug 20

Moderator
Mark Harrison replied to Rolf Blomgren's discussion APM MavLink to FrSky X8R S.Port converter
"Hector, great job and much appreciated!  I've also got prominis sitting around. It would be interesting to hear the the sounds on arm and disarm.  Please add it as a branch. Also, I'm having a hard time understanding the wiring…"
Aug 16

Profile Information

About Me:
- working as software engineer, experienced programmer
- living in piedmont, ca
- moderate embedded programming and arduino coding experience
- email: mh@pixar.com feel free to drop me a line!
Please tell us a bit about your UAV interest
- interested in meeting east bay ardupilots
- started in RC places in Summer 2010
- blogging at http://eastbay-rc.com
- currently working on the Arcticopter project.
goal: multicopter AP platform for high-end DLSR, remote photoshoots
details: http://eastbay-rc.blogspot.com/search/label/arcticopter
Hometown:
Piedmont, CA

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Mark Harrison's Blog

High Altitude Flight Prompts FAA Warning -- NitWit Phantom Owner Agrees to 400 ft Limit

Posted on July 5, 2014 at 9:00pm 4 Comments

Mayhew, in an interview conducted by email, said a user on an Internet forum reported him after seeing flight statistics online. One video by Mayhew says a drone reached an altitude of more than 3,600 feet.

“The local FAA office contacted me via certified letter. I responded by phone and had a good conversation with the front-line manager,” he…

Continue

Forbes: Flying A Drone Through Fireworks May Land You In Prison

Posted on July 4, 2014 at 9:00pm 21 Comments

Forbes Magazine has an update on the recently posted fireworks video, indicating that it may have been flown in violation of a Coast Guard established "safety zone."

"The video’s caption indicates that the flight took place in West Palm Beach, Florida.  If it was a large Fourth of July celebration, the Coast Guard likely…

Continue

Hmm, better check that droneshare account...

Posted on June 25, 2014 at 10:43pm 6 Comments

Remote control drone carrying drugs crash-lands at Wheatfield Prison

A sophisticated plan to land drugs into Wheatfield Prison using a state-of-the-art remote control drone has been foiled after it crash landed in the yard.

The drone - known as a…
Continue

Comment Wall (2 comments)

At 3:30pm on April 7, 2011, Anil Kumar. M said…
I've checked all the below and are correct.

- is the software configured for X and not + copter?
- is your "front" orientation correct on your board?
- is your board mounted right side up?
- do you have the CW and CCW props attached to the correct motors?

I've checked the manual from kkmulticopter and http://rcexplorer.se/page14/kkguide/kkguide/quad.html
At 6:53pm on July 15, 2012, Daniel Bard said…

Hey Mark, my name is Dan and I'm really new to R/C. I have some questions about the FS-TH9x remote.

First-  if i buy this remote can i use it on fix wing aircraft also?

second would you recommend it for some one like me?

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