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

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Gary McCray's Groups


Gary McCray's Page

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.

Mendota Illinois

Latest Activity

Gary McCray commented on Alexandre Mainardi (Nuvem UAV)'s blog post 3D Printed Halbach array Motor. 600W, over 80% efficiency!
"Very impressive build Alexandre.Could you let us know how the operational efficiency compares to a normal brushless motor?"
Gary McCray commented on Gary Mortimer's blog post No more $5 FAA fee, John Taylor wins his case.
"For sure Rob, It will probably stimulate another round of rule / law making and it could go either way. The biggest problem was that it really addressed the toy market inappropriately, muddling it completely with the more serious users and you…"
Gary McCray commented on Gary Mortimer's blog post No more $5 FAA fee, John Taylor wins his case.
"Hi Gary, I first saw this on my Solo Group page.I don't doubt the FAA will appeal it, but legally I think this conclusion was correct and they are really going to have to convince Congress who told them not to mess with model airplanes in the…"
Gary McCray commented on Rachael Murphey's blog post Are Drones Safe? Here's 5 Things to Think About
"Hi Rachael, I think your Post is well intentioned, but especially for this audience not well developed enough to be useful. We have suffered through much false and exaggerated reporting of drone mishaps and it has left us a bit sensitive to that…"
Gary McCray replied to Javier Cerna's discussion [SOLVED] Maxbotix EZ4 Sonar in quadcopters
"Hi Javier, Many of us of DIYdrones and Ardupilot have already been through all of this with Maxbotics including lots of the same responses from them. If you really want to get it to work you have to put it in it's own little open on the bottom…"
May 18
Gary McCray replied to Javier Cerna's discussion Maxbotix EZ4 Sonar in quadcopters
"Hi Javier, Laser rangefinders are not as cheap as SONARS, but the very best one for Drone use is $249.00. And I recommend it very highly. But there are cheaper ones. The Lidar Lite V3 which is…"
May 17
Gary McCray replied to Javier Cerna's discussion Maxbotix EZ4 Sonar in quadcopters
"Hi, I was actually one of the few who got SONAR to work - sort of. It is extremely subject to every kind of noise and vibration. Electromagnetic noise from the motors and ESCs, RFI from the radio, the physical noise of the copter itself and the…"
May 16
Gary McCray commented on Laser Developer's blog post A step closer to miniature, survey grade LiDAR
"You guys at LightWare are definitely making the most interesting and state of the art Laser Rangefinders and this new addition perfectly complements the LW20. Please keep us posted as to price and availability. Best Regards, Gary"
May 16
Gary McCray commented on Laser Developer's blog post A step closer to miniature, survey grade LiDAR
"Hi LD, Really excellent development. Germane to my use, will this rangefinder maintain the overlapped beam capability of the LW20? Specifically will it allow intermixed used of both an LW20 and an LW21 in overlapped mode. I suspect that for me this…"
May 15
Gary McCray commented on Chris Anderson's blog post Pixhawk-powered rover wins 2017 RoboMagellan competition
"Great job, very impressive, especially with all the bystander and miscellaneous clutter."
May 11
Gary McCray commented on Chris Anderson's blog post Drone learns to fly by crashing (a lot)
"Very interesting. 11,500 collisions is a lot - sort of the ultimate expression of "trial and error". They did use a very minimal, bare bones 2 part data acquisition structure. Represents a base line of sorts, basically it seems almost any…"
May 10
Gary McCray commented on Saulius L.'s blog post 3D scanning like a pro
"Really excellent results Saulius. There are laser rangefinders that can acheive good results at higher distances at higher data rates. No, not faster than speed of light. But you might want to check out the Lightware LW20 for possible faster data…"
May 8
Gary McCray commented on Chris Anderson's blog post Review of the $50 Jevois computer vision camera/computer
"Good to know, I had a suspicion that although Nvidias deep learning big stuff is getting a lot of attention, they TK / TX boards still weren't getting much help on the open source level anyway. So as it stands, looks like the RPI-3 might be the…"
May 7
Gary McCray commented on Chris Anderson's blog post Review of the $50 Jevois computer vision camera/computer
"Thank you for putting together this review Chris it is very informative. One of the problems we have is that a lot of the times the nifty new hardware doesn't tell us much about implementation. This very much gives you an idea of what works and…"
May 7
Gary McCray commented on Achal Negi's blog post [Tutorial] Deep Learning on Drones (Part 2/2)
"Excellent accomplishment, great object acquisition, identification and bounding. Simple rectangular bounding frame is very practical. Going to get TX2 soon and will definitely try this code. In addition to camera I am hoping to integrate also with…"
May 5
Gary McCray commented on Jimmy Oliver's blog post Walabot. Has anyone seen/experimented with this?
"Here is a link to a somewhat more informative article on the Vayar chip which it appears is exactly a short range 7GHZ phased array radar chip made in Israel. It is unique at this time and should…"
May 1

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Gary McCray's Blog

Fun for Christmas - Replacing a light bulb with a drone!

Posted on December 27, 2016 at 2:30pm 1 Comment

First - You need a lot of light bulbs:

A friend sent me this and it seemed perfect for a little Christmas cheer.

Sony FDR X3000 4K Action Cam

Posted on December 4, 2016 at 8:52pm 9 Comments

Hi All, Sony has actually given us something to think about.

The Sony FDR X3000 Action Cam has 4K resolution, but for our use, the BOSS…


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…


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…


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!


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!



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

Hi Gary,

Re: Fire Cape

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


Tom C

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

Hi Gary,

I have read your comments on

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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