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 two 26" brushless 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 Thomas J Coyle III's blog post FAA Delay: Comprehensive Set of Rules On Drone Use May Not Be Finalized Until 2017 or Later
"I also think that very small UAVs are going to be the long term answer for almost all applications that don't require carrying and delivering something (ag uses mostly not Amazon deliveries). I also think that the whole private pilots license…"
Gary McCray commented on Jared Reabow's blog post Airbus in near miss with craft that ghosted into Britain’s biggest airport undetected by air traffic control
"Seth maybe I expressed myself poorly. My intention was to say 1 mile out from the end of any given runway, not at the end of any given runway. And I know there are practical limitations to implementing this, But even if you simply said always below…"
Dec 10
Gary McCray commented on Dan Murray's blog post Five Additional FAA Exemptions Issued Today, House Hearing on UAS Integration
"@ Seth, So as I see it the FAA is letting you use these over open water for Oil Well Platforms in the Gulf. Yeah I'm sure no vested interest there."
Dec 10
Gary McCray commented on Dan Murray's blog post Five Additional FAA Exemptions Issued Today, House Hearing on UAS Integration
"Hi Rob, Amazon isn't an existing government contractor with adequate history of lobbying and paying off appropriate officials and politicians. Business has always been done that way in Mexico and the Middle East, it's just now, the United…"
Dec 10
Gary McCray commented on Jared Reabow's blog post Airbus in near miss with craft that ghosted into Britain’s biggest airport undetected by air traffic control
"You know it occurs to me that in 2015, there are going to be a LOT more incidents like this and at least a few things could be done to minimize the problem. It seems to me that it would be possible - easy even to put in a height limiter that would…"
Dec 9
Gary McCray commented on Tilman Griesel's blog post OpenFPV Update 2 - Roadmap for 2015, Oculus Rift Support, 5GHz
"Fantastic work Tilman, I have a DK2 and look forward to implementing your system when you release it. I'll start with it on my rover or robot then move to a quad as well. I know how great Oculus is and how important minimization of…"
Dec 7
Gary McCray commented on Trent at MyGeekShow's blog post USA Trip - Day 5 - The End
"Each time a bit further, eventually you'll make it. Seems like the first time while they were trying to do this in manned airplanes. They had a lot of problems too. Of course they didn't have the FAA hounding them at every turn yet. Hang…"
Dec 6
Gary McCray replied to Edgar Scott's discussion Should we put an end to requiring a traditional Tx for Multicopters? in the group ArduCopter User Group
"Hi  Edgar, I actually think you bring up a very valid issue, one that over this next year (2015) is going to get a lot of attention. I would guess the toy industry will release several robots - flying and otherwise that will be entirely…"
Dec 6
Gary McCray commented on Trent at MyGeekShow's blog post USA Trip - Day 4 - The Longest Day
"Trent - Lindbergh, Earheart, Wrong Way Corrigan, Smoky and the Bandit - Go for it. Great stuff. Incredible and audacious undertaking. Best of Luck, Gary"
Dec 5
Gary McCray commented on's blog post The Twelve Drones of Christmas
"I love my little 200QX, I look at it as the ideal second quadcopter after a nice Hubsan or UDI 818A to initially learn with. The 200QX is a tiny. rock stable, precision control and very high performance all brushless quadcopter. It can let you…"
Dec 5
Gary McCray commented on's blog post The Twelve Drones of Christmas
"And a Phantom in a Pear tree. Great List, I'd add in the Blade 200QX somewhere, it already has it's own cult and retrofit subculture. Putting in the first 4 as practical starter quadcopters was a really good idea. Easy to fly and hard to…"
Dec 4
Gary McCray commented on Riccardo Kuebler's blog post New materials to build moulded planes
"Not so much interested in the Flax, but the basalt based stuff seems very interesting. I would think that one of the problems with flax and other organic materials might be the presence of natural oils which could prevent wetting and decrease…"
Dec 3
Gary McCray replied to meavydev's discussion Y6B no take-off power in the group Arducopter Y6 Owners
"Hi meavdev, Just a thought, but these are classic (prop) installation indications. Just make sure all props are rotating the right direction and are not upside down. You probably already know this, but if either of those two situations are true, the…"
Nov 30
Gary McCray commented on Bryce Johnson's blog post Follow me with Kite Skating a frozen lake
"Really nice footage Bryce, I didn't even know ice kiting was a sport, makes sense and looks like a lot of fun. Bad landings could be less forgiving than kite boarding though. Great lake! Best, Gary"
Nov 30
Gary McCray commented on Daniel Lukonis's blog post Butterfly Drone flown with no battery!
"Nice design Daniel, Curious to know how much more throttle it needs to hover with the screen protection cover on it versus not? In a normal open propeller design, thrust actually benefits from having the motor / prop mounted downwards as you have…"
Nov 30
Jelte Liebrand commented on Gary McCray's blog post A smaller Quad the DJI Flamewheel F330 with an APM.
"Hi there, Am I right in saying the F330 is no longer in production? Also, will the 3DR Pixhawk (rather than the PX4) fit on either the F330 or the F450 frame? /Cheers, Jelte"
Nov 29

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Gary McCray's Blog

GoPro 4 is Here - Sort of!

Posted on September 29, 2014 at 10:30am 36 Comments

GoPro is finally announcing the new 4 Silver and Black:

It , of course has the new 30fps 4K and - not surprisingly costs $100.00 more than the last one so now $499.00.

Probably using the new Ambarella 9 chip, but no mention made of built in electronic image stabilization…


New 1 at a time ESC calibration method for PX4 or Pixhawk

Posted on June 28, 2014 at 2:47pm 3 Comments

One of the Problems with the PX4 / Pixhawk is that it uses a PPM-Sum receiver which when so configured may not work at all for the normal receiver based method of one at a time ESC programming.

And especially so for 4 in 1 ESCs.

The one at a time method I have developed uses the Wikis…


Drones Are Fun an informational resource for everybody interested in UAVs, especially for personal use.

Posted on May 29, 2014 at 5:25pm 21 Comments

Hi everybody,

Gary McCray here, past wiki editor for DIYDrones, announcing my own Informational Web Site:

I am very much strong advocate of our APM and Pixhawk flight…


BeagleBone Black available - if you're quick.

Posted on March 5, 2014 at 11:00am 32 Comments

Hi all, Beagle Bone Blacks are available at Adafruit this morning.

I wouldn't ordinarily put an Advertisement for a product as a Blog but as you may or may not know, Beagle Bone Blacks are seriously hard to come by.

Everybody is out of stock all the time, except a fewy unscrupulous dealers who…


Comment Wall (3 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!



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