Tom Mahood
  • Irvine, CA
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A caution to those upgrading a tricopter to 3.3

Started Oct 18, 2015 0 Replies

I just upgraded my tricopter from 3.2.1 to 3.3 and got bit by the reversed servo bug. As those of you with tricopters know, there has been a variable called RC7_REV which you can use to ensure the…Continue

Any smaller alternatives to the stock Pixhawk buzzer?

Started this discussion. Last reply by Tom Mahood Sep 17, 2014. 2 Replies

I'm interested in replacing the stock Pixhawk piezo buzzer with something smaller but after a lot of time looking, I can't seem to find any specs on it. The schematics on the Pixhawk.org website show…Continue

Need advice for imaging a steep ridgeline

Started this discussion. Last reply by Tom Mahood Aug 7, 2014. 9 Replies

I'm interested in imaging a possible archaeological site located along the spine of a fairly steep descending ridgeline and am looking for advice on how to approach the imaging. At the very least I'd…Continue

Any good GPS cameras lighter than a Canon SX230 HS?

Started this discussion. Last reply by Tom Mahood Apr 11, 2014. 4 Replies

I've been using a Canon SX230 HS on multicopters for mapping and vertical imaging. I think it does a great job and takes fantastic pictures....but it's heavy! At 220 grams it seriously shortens…Continue

 

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Tom Mahood posted a discussion

A caution to those upgrading a tricopter to 3.3

I just upgraded my tricopter from 3.2.1 to 3.3 and got bit by the reversed servo bug. As those of you with tricopters know, there has been a variable called RC7_REV which you can use to ensure the APM/Pixhawk moves the tail servo in the correct direction. It default loads as +1, but I've often had to change it to -1. I know to do this because the tricopter spins wildly out of control as soon as it lifts off.I knew 3.3 introduced a new variable called MOT_YAW_SV_REV to replace the reversing done…See More
Oct 18, 2015
EngineerX commented on Tom Mahood's blog post A public display of irresponsibility by a major newspaper
"Worst case scenario: if you hit someone at the right spot, even with a not-so heavy object, sure they could get killed. I believe hockey puck and baseball ball collisions with humans have resulted in fatalities. A 250mm miniquad could weigh up to…"
Sep 3, 2015
Scott W commented on Tom Mahood's blog post A public display of irresponsibility by a major newspaper
"@darrell, Actually, in their real test w/ flying drones, the consumer plastic camera drone didn't hurt anything.  Only a custom built monster x6 with a huge weight attached to it and carbon fiber props cut into things.  My copter w/…"
Aug 27, 2015
JoeBob commented on Tom Mahood's blog post A public display of irresponsibility by a major newspaper
"I saw quite a few that had to be well over 400 feet.  Especially if he used a standard lens.  Anybody see any wide angle distortion?"
Aug 27, 2015
Darrell Burkey commented on Tom Mahood's blog post A public display of irresponsibility by a major newspaper
"@Ken Williams - The Mythbusters disagree with you. I saw it on YouTube so it must be true. :-) "
Aug 27, 2015
Ken Williams commented on Tom Mahood's blog post A public display of irresponsibility by a major newspaper
"I just want to say that I can see both sides, but I must find myself on the side opposite the OP. Because he has no idea what permissions were obtained. Also, as was mentioned before. we're talking 5lbs of plastic and ~400 ft. In fact, many of…"
Aug 24, 2015
Darrell Burkey commented on Tom Mahood's blog post A public display of irresponsibility by a major newspaper
"@David - OK, you have convinced me. But let's do a controlled test just to be sure. I'll bring my 25b octocopter over to your place and you can sit underneath it. Worst case scenario you'll win a Darwin award."
Aug 24, 2015

100KM
DavidJames commented on Tom Mahood's blog post A public display of irresponsibility by a major newspaper
"@Darrell,  You are confusing frequency with risk.   Actually it is silly to compare the risk of a duck size drone falling out of the sky to the risk of a full size 2500 lb aircraft falling out of the sky.  Even the FAA has recognized…"
Aug 24, 2015
Darrell Burkey commented on Tom Mahood's blog post A public display of irresponsibility by a major newspaper
"@David - Ever heard of a motorcycle? How many commercial aircraft fell from the sky today? How many consumer level drones fell from the sky today? It's just silly to compare the two. Even a hot air ballon doesn't just fall out of the sky.…"
Aug 23, 2015

100KM
DavidJames commented on Tom Mahood's blog post A public display of irresponsibility by a major newspaper
"@ Darrell,    The only way the duck strike can injure you as you are driving on the freeway is if you are driving with your head out the sunroof.   Same thing with the small drones. A manned aircraft is far more…"
Aug 23, 2015
Darrell Burkey commented on Tom Mahood's blog post A public display of irresponsibility by a major newspaper
"@David - Get back to me after you've been hit by a duck on the freeway. I can assure you it's not a pleasant experience and can be quite dangerous.  As for the Cessna 172, it's reliable for exactly the reasons you mention. It…"
Aug 23, 2015
Jean-Philippe Hell commented on Tom Mahood's blog post A public display of irresponsibility by a major newspaper
"Being a embedded systems engineer in the aeronautic,A model plane builder and enthusiast since 15 years,Single engine private airplane and glider pilot,Having worked on MALE-sized UAV project,Being a daily commuter on motorcycle,I can just agree on…"
Aug 23, 2015

100KM
DavidJames commented on Tom Mahood's blog post A public display of irresponsibility by a major newspaper
"@Alasdair,    It sounds like you have more of a bird strike problem and not a drone problem.  :-) I too have flown model aircraft now for decades.   The reliability of my autopilot enhanced model aircraft has been a…"
Aug 23, 2015

100KM
DavidJames commented on Tom Mahood's blog post A public display of irresponsibility by a major newspaper
"@Darrell,    I was comparing flying a consumer drone over a freeway, to flying a hot air balloon over a freeway.   If flying a hot air balloon with a 2000 lb basket floating over a freeway is not a significant risk, how can…"
Aug 23, 2015
Darrell Burkey commented on Tom Mahood's blog post A public display of irresponsibility by a major newspaper
"@David - Comparing a consumer multi rotor being flown by a hobbyist to a commercial airliner being flown by a highly trained crew of professionals is a bit silly. Anyone who has flown a multirotor probably has also seen it fall from the sky at one…"
Aug 23, 2015

100KM
DavidJames commented on Tom Mahood's blog post A public display of irresponsibility by a major newspaper
"Looks like a lot of good photos.     The fairground shot at night is spectacular.   It appears to be a well set up shot with the quadcopter outside the fair, over the parking lot. Not sure what the problem is with…"
Aug 22, 2015

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Tom Mahood's Blog

A public display of irresponsibility by a major newspaper

Posted on August 21, 2015 at 6:54pm 22 Comments

The Orange County Register has just published a slide show of  50 aerial shots taken over Orange County, California from an unspecified quadcopter. While they are beautiful and very nicely done, quite a few are counter to FAA guidelines. Some are just downright boneheaded (Flying over freeways? Really??).

There are a number of…

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Personal Drones May Present Public Safety Concerns

Posted on August 29, 2013 at 10:30pm 9 Comments

...Or so says the Joint Regional Intelligence Center. JRIC is yet another anti-terrorist agency most people have never heard of and is comprised of the Feds and law enforcement agencies in the counties of Southern California. The following single page…

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A composite folding H-quad

Posted on August 21, 2013 at 12:40pm 18 Comments

I've just wrapped up a new design based upon a lot of ideas I stole found on this site.…

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Comment Wall (1 comment)

At 7:14pm on December 12, 2013, Dennis Okeefe said…

this is cool.  i was looking for how to import .kmz files into mission planner and saw your post about exporting them.  i immediately realized who you were since i am a big fan of yours - black world stuff you have posted.  are you new to this "hobby"?   it would be a useful tool for "research".  anyway, do you know if you can import data directly from google earth into mission planner?  

timmy

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