Gary McCray
  • Male
  • Fort Bragg, CA
  • United States
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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.
  • 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 replied to John G.'s discussion my new book on how to build a drone is free this weekend!
"Hi John, Great book covering a really interesting gamut of fixed wing, multicopter and FPV topics. Much that I haven't seen elsewhere. Best Regards, Gary"
26 minutes 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
"github updated with initial firmware."
3 hours ago
Gary McCray commented on Rob_Lefebvre's blog post Arducopter Flies Gas Powered Helicopter
"Fantastic results Rob and amazing vibration graph. This is a genuine breakthrough for a whole batch of civilian applications. Until now you had to be a government (or at least a Japanese rice farmer) to afford this kind of capability. Best…"
8 hours ago
Gary McCray commented on Nicolas's blog post 3DR IRIS gets approved in France by DGAC (french FAA).
"@Jack I'm pretty sure Chris's new friend Richard just bought France."
yesterday
Gary McCray commented on Nils Högberg's blog post Oculus Rift DK2 with MavLink head tracking and HUD, first steps (OVRPilot part 1)
"+1 on that last comment Nils - I know the feeling. Although I now have an adequate computer, I really need to update my video card into the GTX 770 range to have any chance of surviving the heavy duty stuff. Lag and jitter and It takes hours to get…"
yesterday
Gary McCray replied to Grant G's discussion Trying to setup a Pixhawk in my Talon in the group X-UAV Talon
"Have now flown my quadcopter copter and Aurora 9 and Delta 8 are working fine."
yesterday
Gary McCray replied to Grant G's discussion Trying to setup a Pixhawk in my Talon in the group X-UAV Talon
"Hi again Grant, Just to clarify, I got my Pixhawk and hooked it up with external GPS/Compass, Delta 8 receiver, arm button and buzzer. It is not installed in my copter yet. Delta 8 was already bound to my Hitec radio and outputting PPM-Sum / CPPM…"
yesterday
Gary McCray commented on Nicolas's blog post 3DR IRIS gets approved in France by DGAC (french FAA).
"Great to hear Iris is accepted, seems like the + has so few changes it should have simply been included as the improved Iris, but I guess with government regulations any change means a whole new acceptance process. Why couldn't we have some…"
yesterday
Gary McCray replied to Grant G's discussion Trying to setup a Pixhawk in my Talon in the group X-UAV Talon
"Hi Grant, On all my Delta 8 receivers, the RED LED is very bright and the green LED is very weak which I think is just a matter of much higher lumens for the RED LED, so if you are not seeing the red LED it is probably because it is not coming…"
yesterday
Gary McCray replied to Grant G's discussion Trying to setup a Pixhawk in my Talon in the group X-UAV Talon
"Hi Grant, I should add, I am getting solid red and solid green when receiver is powered and transmitter is on (although green is barely visible) which does indicate that it is bound and CPPM / PPM-Sum mode. And is what you need. Best, Gary"
Thursday
Gary McCray replied to Grant G's discussion Trying to setup a Pixhawk in my Talon in the group X-UAV Talon
"Hi Grant and Scott, I have 3 Delta 8's and an Hitec Aurora 9 transmitter I am happily using it with. I also have an oscilloscope and although I have 2 of the Delta 8's working fine on PX4's it wouldn't work on my Pixhawk. Used…"
Thursday
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…"
Tuesday
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 "
Sep 14
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…"
Sep 14
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…"
Sep 14
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

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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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