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.
  • 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.

Hometown:
Mendota Illinois

Latest Activity

Gary McCray commented on Ioan Ghip's blog post Man sized *copter
"I don't think it was faked and he was well above ground effect for a copter that small. He'd have had to be within 2 or 3 feet of the surface for ground effect to have helped at all. The spray is from the copters thrust and turbulence…"
Saturday
Gary McCray commented on Ioan Ghip's blog post Man sized *copter
"I'll bet those boots are very firmly attached to that platform. Talk about flying lawnmower, more like flying log chipper. When I watch some young kid flying between cars on his rice rocket on the freeway, I figure he knows just what his life…"
Saturday
Gary McCray replied to Brad Hughey's discussion The Case for Large-Scale Electric Multicopters
"Hi Brad, I see you recently responded to another blog and I was just wondering if you had been doing any more development on your (large) multicopter. One of the things I have observed is that as our large fixed pitch multicopter propellers get…"
Saturday
Gary McCray replied to Michal Rus's discussion Quadcopter with down facing motors/props
"Hi Michal, The KDE motors are designed well for optimal airflow and they have all high temperature components and windings. But I also agree that keeping the temperature down is a good idea. And down facing props / motors do not benefit from prop…"
Friday
Gary McCray commented on Chris Anderson's blog post AIrDroids (PocketCopter) ceasing operations
"Whatever else is true, this is a valid cautionary tale. As this discussion points out there are a lot of reasons to be very careful about investing in this sort of project. If it's something you really believe in and you can afford the loss…"
Friday
Gary McCray commented on Roberto Navoni's blog post SPARK, the italian drone recognized by ENAC (Italian FAA ) for professional aerial work.
"Congratulations Roberto, I know your team and you personally have done lot of hard work to get you to this milestone. And it is a beautiful and very pro quadcopter. I wish you all great success. Best Regards, Gary"
Friday
Gary McCray commented on Chris Anderson's blog post AIrDroids (PocketCopter) ceasing operations
"Kickstarter (and Indiegogo) have an interesting vulnerability, "over success". You don't get started at all if you don't reach your stated goal, but the bigger problem may be what happens if you succeed beyond your wildest…"
Friday

MR60
Forrest Frantz replied to Gary McCray's discussion Vibration Isolation and Dampening of APM / PX4 for version 2.9
"my database on rotor combinations has been focused on thrust versus watts.  so i rarely recorded rpm. you are exploring new ground.  on rpm measurement, use the system you are using to estimate it but verify your estimation system once…"
Friday
Gary McCray commented on Chris Anderson's blog post AIrDroids (PocketCopter) ceasing operations
"Hi Marc, I lived in Glenview many years ago right behind the Naval Air station - lots of sonic booms back then. Definitely sounds like an interesting copter your putting together, I'd definitely like to hear more about it as it goes…"
Friday
Gary McCray commented on Chris Anderson's blog post AIrDroids (PocketCopter) ceasing operations
"Definitely interesting to hear your take Quadzi, The fact is that even those who did / do get them do not have any recourse now for any problems and my suspicion is that very few of them will end up being very serviceable for very long. One of the…"
Friday
Gary McCray commented on Chris Anderson's blog post AIrDroids (PocketCopter) ceasing operations
"Hi Marc, In addition to supplying any and all components inexpensively, my intention is to publish all fabrication specs for free and open use. Basically if anybody can make it cheaper, or better have a go at it. Or possibly more reasonably build…"
Friday
Jon replied to Gary McCray's discussion Vibration Isolation and Dampening of APM / PX4 for version 2.9
"I'm guessing that spikes will be seen at 43 & 86Hz but maybe not at the other Hz. I don't know whether the amps will change though. I will need to test. Do youthink the amps look about right at 2000 & 2500rpm?"
Friday

MR60
Forrest Frantz replied to Gary McCray's discussion Vibration Isolation and Dampening of APM / PX4 for version 2.9
"so do you think the results will change if you eliminate potential prop wash feedback?"
Friday
Gary McCray commented on Chris Anderson's blog post AIrDroids (PocketCopter) ceasing operations
"Hi All, Definitely appreciate this excellent Post Mortem, very informative. This reinforces my feelings in general about KickStarter and IndieGogo. I can easily believe that success on KickStarter can be as problematic as failure. I have considered…"
Thursday
Gary McCray replied to RoboBill's discussion Contributing to giving sight to AV's in the group ArduRover User Group
"Hi All, I just got a LightWare SF30B, their new ultra fast one. http://www.lightware.co.za/shop/en/rangefinders-and-altimeters/40-sf30b.html It is also very small and light at 30 grams. My plan is to scan it in X/Y in a GoPro type 3 axis brushless…"
Thursday
Jon replied to Gary McCray's discussion Vibration Isolation and Dampening of APM / PX4 for version 2.9
"The above photo was taken on a previous vibration test. For the test detailed above I removed all the electronics/battery except X-CAM off the wooden board. The images below are the charts for the three tests at 2500rpm:- 1. Prop balanced, 2. Motor…"
Thursday

Gary McCray's Photos

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Gary McCray's Blog

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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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…

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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…

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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

Comment Wall (4 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

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