Gary McCray
  • Male
  • Fort Bragg, CA
  • United States
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Profile Information

About Me:

I am the Owner and Author of these advertising-free informative web sites:
Now flying, rolling or under construction:
  • Hoverthings FLIP FPV Pro Quadcopter with Pixhawk, 14" props, KDE 515kv motors, telemetry, Sony AS100V Video Camera, Brushlesss Gimbal and FPV.
  • Custom CF tube H/dead-cat Quadcopter with Pixhawk, GoPro, Gimbal & FPV.
  • Hoverthings FLIP Sport Quadcopter with PX4.
  • ARF DJI FlameWheel 330 Quadcopter with PX4.
  • ARF DJI Flamewheel 450 Quadcopter with APM 2.5.
  • Blade 200 QX, Hubsan X4 and Estes Nano Quadcopters.
  • My design: Hanging pendulum style robot with 2 brushless 26" bicycle wheels.
  • Traxxas Stampede 4x4 Rover with PX4.

Professional History:
  • (Retired) Microcomputer Engineer, Hardware and Firmware.
  • (Past) Lead Editor of DIYDrones APMcopter, APMplane and APMrover wikis.

Please tell us a bit about your UAV interest
  • Reentry into RC Planes 3 years ago.
  • Lots of PIC hardware and C and assembler programming experience.
  • Currently interested in Quadcopter development, robotics, 3D vision, environment relative autonomous navigation, Linux, Beagle Bone, Odroid, TOF cameras and LIDAR.

Hometown:
Mendota Illinois

Latest Activity

Gary McCray commented on Cala's blog post SF 11 Laser altimeter, an useful tool for agriculture purpose
"That is really superb Robert, I have an SF30B and am very interested in doing much the same thing. I notice your response is simply to back up. Are you tracking at all the direction of the Lidar when the object is detected or are you simply backing…"
8 hours ago
Gary McCray commented on Gary Mortimer's blog post In the USA.... Be careful after Monday
"Interesting interpretations Gary, According to the speaker if you don't belong to a Community based organization, the FAA can prosecute you for flying at all. Unfortunately in the US I am absolutely positive that covers 99 percent of the…"
yesterday
Gary McCray commented on Dale Greer's blog post New anode doubles battery energy density - For "some drones" this November
"This is very interesting, But we have seen a lot of announcements of new revolutionary lithium battery technology that could double energy density and so far none have succeeded in anything remotely like that. Even if this does acheive such high…"
Thursday
Gary McCray commented on Chris Anderson's blog post DIY Drones at 80,000 members! Reflections on the evolution of DIY robotics and the next big things
"Hi Marc, I understand and sympathize with the frustration re DIYDrones and 3DR. 3DR provided massive support for DIYDrones for a long time, both building the hardware "our" open developers designed and assisting (or possibly meddling…"
Thursday
Gary McCray commented on Chris Anderson's blog post DIY Drones at 80,000 members! Reflections on the evolution of DIY robotics and the next big things
"Hi Chris and John, Right on, it may be that we call ourselves DIYDrones, but the reality is that we are not DIY wood shop furniture makers or even DIY home builders, simply doing something ourselves that is common place everywhere. This isn't…"
Wednesday
Gary McCray commented on Brian Riskas's blog post Heavy lift X8 and sprayer system
"Hi George, Some time ago here at DIY drones, one of the members did some real world tests with square versus round tubing of the same dimension on a standard quadcopter, they found, as I recall, approximately a 4 percent improvement in efficiency…"
Wednesday
Gary McCray commented on Brian Riskas's blog post Heavy lift X8 and sprayer system
"Hi Brian, Thank you for posting this, I honestly think that you have come close to designing the ultimate 107 conforming heavy lift multicopter. I don't think that there is much on your design that can be improved on significantly. That…"
Wednesday
Gary McCray commented on Daniel McKinnon's blog post Navigating the byzantine FAA Part 107 exam registration process
"Hi Rob, The price came from a Google search tag that my Antivirus told me threatened my very existence if I went to it, so I chickened out and I'm not sure what currency it was in either. I also, as you know, eulogize Sony, but I was surprised…"
Wednesday
Gary McCray replied to Marco deOliveira's discussion Aerial Photo Drone
"Hi Marco, At the new Hoverthings web site they say they are going to get more in, but it may be they are just gone. It was one mans in Florida's vision and he did a very nice job. The QAV 540G version is the one you would need with its built in…"
Tuesday
Gary McCray commented on Daniel McKinnon's blog post Navigating the byzantine FAA Part 107 exam registration process
"Hi Daniel,  Sony announced the UMC-S3C miniaturized camera that you linked to above four months ago to be available in August. Well, it's August and there are not even any updates or price or any new information about it. Still have a week…"
Tuesday
Gary McCray replied to Arvid Elias's discussion Optical flow sensor and Pixhawk
"Hi All, Re the Lidar Lite response from Chris on another Blog: Garmin bought Lidar Lite and has discontinued it, from everything I can tell there will be no new V3 model or any other for that matter. There are other laser based altitude sensors…"
Tuesday
Gary McCray commented on Rob_Lefebvre's blog post Procyon 800E Phase 2 Beta Testing Begins
"Hi Vadzim, Just like variable pitch in the main rotor does, variable pitch in the tail rotor lets you have much faster application of thrust, because you operate in motor RPM maximum torgue / power range. This means tail rotor is much more…"
Aug 22
Gary McCray replied to Tom's discussion Economical Multi-rotor That Can Lift 15 pounds for 20 Minute Flight
"Hi Brian, Of course the improvement in efficiency is obvious. But I can also certainly understand, how especially with the big slow props and high mass and periodic pressure waves from them on the spar, that broad low to medium frequency high…"
Aug 22
Gary McCray commented on Daniel McKinnon's blog post Navigating the byzantine FAA Part 107 exam registration process
"Hi Daniel, Thanks for this great post. It is very useful and provides the most important links. I did notice that the link to the App for FAA testing center location that you provided while it had a really nice map based interface had a lot less…"
Aug 22
Gary McCray replied to René Desgagnés's discussion Lightware SF02 lidar and Pixhawk
"Hi Rene, If you haven't already done so, download the SFO2 manual from light ware here; http://www.lightware.co.za/shop/en/drone-altimeters/7-sf02f.html I would recommend that you take a look at the Pixhawk + 5 power when you have hooked up the…"
Aug 22
Gary McCray replied to Tom's discussion Economical Multi-rotor That Can Lift 15 pounds for 20 Minute Flight
"Great Frame design Brian. And certainly if you build top drawer with KDE and parts like these, $10,000.00 add up really fast. Best looking heavy lift multi I have ever seen. Really serious CNC aluminum central hub. And I really like the aerodynamic…"
Aug 22

Gary McCray's Photos

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Gary McCray's Blog

Really, really stupid idea of the month, maybe the whole year!- - Drone attack Eagles!

Posted on February 1, 2016 at 6:56pm 38 Comments

I just saw this on our local news and was surprised nobody else had posted it here yet.

Easily the truly stupidest idea I have ever seen - Dutch Police train Eagle to take down drone.

Better than the UnAmerican Eagle in the Our Man Flint Movies (that dates me a bit I'm…

Continue

FAA/DOT UAS Registration - A Very Short Window to Comment

Posted on October 29, 2015 at 12:16pm 11 Comments

Hi All,

We have a very short window of opportunity to comment on the FAA's proposed registration process.

I have sent in the following comment which you are welcome to copy, edit, do whatever you want with, but I think it realistically presents a decent case for moderation and common…

Continue

Great deal on a 3 axis gimbal with Alexmos controller

Posted on June 26, 2015 at 4:00pm 64 Comments

Just had to tell all of you about this $59.95 three axis gimbal deal on EBay:

This seemed like a great deal and looks to be identical to DYS Gimbal on Hobbyking which is $200.00.

I got one and quality appears excellent though I haven't tried to use it yet (I will probably get…

Continue

My thoughts on the state of affairs.

Posted on February 11, 2015 at 9:30pm 3 Comments

Recently a local radio station asked me to comment on an interview relating to the current status of "drones".

I am enclosing the letter I sent to them declining phone interview for the reasons specified, but putting my "opinions" in writing instead for them to use as the…

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Comment Wall (5 comments)

At 8:14am on February 13, 2013, Jethro Hazelhurst said…

H Gary,

First off, thank you for the superb job on the F330 construction page and wiki table of contents.

I will Email you the Image so that you can put it where you see fit.

Many thanks again!

Jethro.

At 10:49pm on May 21, 2013, Jorge Antonio Saldaña Rosales said…

Hola que tal Gary sabes el hadware que necesito para hacer mi drone Cooperativo

At 5:17pm on May 22, 2013, Michael said…

Hi Gary,

Just a thing on shipping rates (from your comment). I was also mad because of high shipping. I sent support an email and they shipped the parts for free through standard mail! I got it in 2 days ( I live on the east coast). There is a size limit though, can't go above 13 oz, but for small parts its fine. Oh and btw, when you email them, ask for Lorena, it may take a day or 2 more because of her work hours, but she's been amazing with shipping like this.

 

Sorry this is the only way I could contact you!

 

Michael

At 3:35pm on March 26, 2015,
Admin
Thomas J Coyle III
said…

Hi Gary,

Re: Fire Cape

I have been thinking about it, but have not decided to move on it yet.

Thanks,

Tom C

At 1:30am on June 29, 2016, Jerry Zhang said…

Hi Gary,

I have read your comments on http://diydrones.com/profiles/blogs/autonomous-camera-imu-based-localization-for-a-ar-drone-quadrotor?xg_source=activity.

I am a student studying on path recovery using Parrot Ardrone2.0 . Is there a way to use its intrinsic sensor to do this? Do you solve it? 

Thank you.

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