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.
  • 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.

Hometown:
Mendota Illinois

Latest Activity

Gary McCray commented on Chris Anderson's blog post Pocketcopter project on Indiegogo
"The fact that they have received 95,000 pounds out of a 15,000 pound goal certainly seems to me to be an indication that there are a lot of people who have no idea what they are investing in. Clearly the people proposing this have a very limited…"
17 hours ago
Swift replied to Gary McCray's discussion Need RC PWM signal to 0-5 volts for my robot. in the group ArduRover User Group
"the project files are here:  https://github.com/swift-depot/PWM2Analog ; ... underconstruction so use at your own risk "
Monday
Gary McCray commented on Nils Högberg's blog post Oculus Rift DK2 with MavLink head tracking and HUD, first steps (OVRPilot part 1)
"Hi Nils, Excellent to see such a great start. Maybe bigger gimbal motors and more static gimbal motor current could allow faster response (less lag)? Or is most lag a result of transmission, reception, display delays? Not that lag is excessive, just…"
Sunday
Gary McCray commented on Chris Anderson's blog post Pocketcopter project on Indiegogo
"Should go up and down just fine, but purposely move in any direction other than where the wind is taking it, not so much. I guess you could put it on a tether, just like a balloon - or, you could just use a balloon - hmm obviously a great idea maybe…"
Sunday
Gary McCray commented on Marius's blog post HOBBYWING Quatro 20Ax4 Esc with 3DR APM 2.6
"Hi Marius, The 4 in 1 ESC does come pre-programmed for NIMH batteries, but if you are not going to use the quattros low voltage cutoff features, that is irrelevant. The way the ESC is supplied (with NIMh battery selected), low voltage cut off is in…"
Sep 10
Gary McCray commented on Roger Sollenberger's blog post 3DR Launches IRIS+
"Hi Marco, My friend Oliver is using the Alexmos 32 bit board and while it might have the potential to be a great board, as far as non-electronic engineers are concerned, setup to do anything at all is a nightmare. Many of the "PID"s do not…"
Sep 10
Gary McCray commented on Roger Sollenberger's blog post 3DR Launches IRIS+
"Hi Damuov, I am currently using a Spektrum DX7 with a single satellite receiver on one of my little Quadcopters a DJI F330 Flamewheel and although I enjoy using it, it has severe limitations. As a single satellite with tiny little antennas it's…"
Sep 9
Gary McCray commented on Marius's blog post HOBBYWING Quatro 20Ax4 Esc with 3DR APM 2.6
"I am using the 4 in 1 ESCs on two Quadcopters and am very happy with them. The aluminum plate on the bottom definitely does a better job dissipating heat than ESCs without heat sinks. And the fact that you wire the battery straight to them means you…"
Sep 9
Gary McCray commented on Roger Sollenberger's blog post 3DR Launches IRIS+
"Wow, things happen fast, Earlier today the 3DR site said 850 KV motors and 10" props, now it says 920 KV motors and 9.5" props, a strange direction to go in. Personally I would have thought longer arms and 12" props with a slightly…"
Sep 9
Gary McCray commented on Roger Sollenberger's blog post 3DR Launches IRIS+
"I personally think the Iris + solves the primary deficits of the original Iris, inadequate power and inadequate flight time. And I am really happy to see that they have released it. I do think it might be a really nice idea for 3DR to offer upgrade…"
Sep 9
Gary McCray commented on Roger Sollenberger's blog post 3DR Launches IRIS+
"Hi Damouav, RTF probably makes sense because: The Pixhawk requires PPM-SUM input and only a small fraction of RC systems provide this. It could easily become a headache for people wanting BNF or PNP. The Flysky TH9X unit that they provide is…"
Sep 9
Gary McCray commented on keeyen pang's blog post FLIR Tau 2 revisit
"Hi Keeyen, Great accomplishment, It might help if you could possibly mark suspected monkeys perhaps with arrow or circle. Seemed like around 4 min 30 seconds and later around 7 minutes. What it also very much makes clear is that use of IR camera is…"
Sep 6
Swift replied to Gary McCray's discussion Need RC PWM signal to 0-5 volts for my robot. in the group ArduRover User Group
"Thanks Gary, I will do some modifications and get back soon."
Sep 5
Gary McCray commented on Lester Haines's blog post APM:Plane advanced tree avoidance algorithm
""The Larch!" MP sketch was always one of my favorites +1 Bill."
Sep 5
Gary McCray replied to Gary McCray's discussion Need RC PWM signal to 0-5 volts for my robot. in the group ArduRover User Group
"Hi Eric, I think for many uses, if we simply supply conservative defaults for low PWM values and High PWMs values that this may be a non issue for most users. Simply set low PWM high enough so that it is pretty much guaranteed to be at zero with…"
Sep 4
Gary McCray commented on Víctor Mayoral's blog post First copter flight using Linux
"Great Job Victor, I believe your dedication and hard work have greatly sped up the whole process. We will all now soon be able to benefit from Linux / Beagle Bone autopilots. Thank You Very Much, Gary Good illustration of Iris durability too, a lot…"
Sep 4

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Gary McCray's Blog

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…

Continue

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: http://www.dronesarefun.com/

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

Continue

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…

Continue

I Really Need help solving a problem for all of us!

Posted on February 23, 2014 at 7:30pm 91 Comments

We have a great new Wiki / Manual which is actually being I think very helpful for all of us.

But there is a Huge - Seemingly Intractable Problem. At least in my estimation of things:

No the Iris isn't the problem, It's a really great 3DR copter, probably the best one available for the…

Continue

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!

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

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