Gary McCray
  • Male
  • Fort Bragg, CA
  • United States
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Gary McCray's Friends

  • Yutaca Sawai
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  • Daniel Lachance
  • FlightBots.com
  • Rob Thompson
  • J M
  • Troy Mestler
  • Daniel Liebeskind
  • giel aragon
  • Mike P
  • Paul Krajewski
  • sachyy jay
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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 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 Dez Socks's blog post WARNING :FTDI Drivers Are Killing Fake Chips(windows update)
"Give me a break, the millions of customers who purchased $5.00 to $100.00 dollar devices are going to sue a Chinese company - RIGHT!!! The company with the license is not simply making the "device" that you completely unknowingly purchase…"
10 hours ago
Gary McCray commented on Dez Socks's blog post WARNING :FTDI Drivers Are Killing Fake Chips(windows update)
"Hi Alex, I disagree, this is not at all the same as counterfeit currency, in fact currency has specific laws governing it that do NOT apply to anything else. It is also not like fake designer products which are in fact clear and obvious potential…"
14 hours ago
Gary McCray commented on Dez Socks's blog post WARNING :FTDI Drivers Are Killing Fake Chips(windows update)
"I would say that if this is true at face value, that since consumers have no way of knowing if merchandise they have purchased contains real or "fake" FTDI chips that the act of doing this is very much like intentional criminal destruction…"
yesterday
Gary McCray commented on F. C. Bearsch "Tearig"'s blog post Vibration Mitigation Blocks- VMB1
"Hi Frederic, In particular several quadcopter operators especially those with unusually large slow props are seeing "unusual" larger than normal Z axis vibrations especially when applying throttle wither to climb or stop a descent. In my…"
yesterday
Gary McCray commented on Chris Anderson's blog post UAVs with artificial muscles
"Piezoelectric polymer films have been around for a long time, on the one hand if you bend them mechanically you can generate a voltage or if you apply a voltage you can cause them to bend. The ones I have seen at least are not good for doing very…"
yesterday
Gary McCray left a comment for Troy Mestler
"Hi Troy, I responded to your Blog post re multiblade props and X8 - multi, hope it helps. Best Regards, Gary"
Thursday
Gary McCray replied to Ewen Rankin's discussion One Hour Flight Times - Specs
"Hi Troy, My freind Oliver tried 3 blade props and I have a set myself (Master Airscrew). They did not actually work very well,but it may well be that their skinny blade design is at fault, more of an airplane prop than a multirotor even though…"
Thursday
Gary McCray replied to Ewen Rankin's discussion One Hour Flight Times - Specs
"Hi Troy, The larger diameter the prop the higher the actual efficiency, usually also slower moving. That is a pretty immutable fact and is the single most important factor in efficiency. However, big slow moving props do introduce other…"
Wednesday
Gary McCray commented on F. C. Bearsch "Tearig"'s blog post Vibration Mitigation Blocks- VMB1
"Hi FC, What material are these made out of and how do you use them? Could you post a few pictures of them in place? Do you have any before and after Accel figures for them? Best Regards, Gary"
Wednesday
Gary McCray commented on Hugues's blog post Review and tests of anti-vibration systems
"Hi Hugues, I developed the suspended O-ring platform before I knew about Zeal and have always found it to yield good results, and in fact, the first results we ever had that consistantly got our vibrations down into the "satisfactory" sub…"
Monday
Gary McCray commented on Hugues's blog post Review and tests of anti-vibration systems
"Hi Hugues, All I did was use longer small machine screws in each corner with a nut threaded down to actually secure the top of the case and leaving about a 1/8" gap between the top of the nut and the bottom of the machine screw head. This is…"
Monday
Gary McCray commented on Hugues's blog post Review and tests of anti-vibration systems
"Hi Hugues, All I did was use longer small machine screws in each corner with a nut threaded down to actually secure the top of the case and leaving about a 1/8" gap between the top of the nut and the bottom of the machine screw head. This is…"
Monday
Gary McCray replied to Ted Byers's discussion What is the relation between the motors in a quadcopter, the propellers, the battery, and flight time?
"Hi Ted, It was really an exercise in making a high endurance copter with (mostly) inexpensive parts, he definitely proved it could be done, but you don't really end up with a practical copter for actually doing anything. As for motors, KDE is…"
Monday
Gary McCray replied to Ted Byers's discussion What is the relation between the motors in a quadcopter, the propellers, the battery, and flight time?
"It is actually possible to build an endurance copter with those cheap components, lots of people have done it and I have a set of those cheap RC Timer motors myself. However, it is NOT a practical quadcopter, it handles very poorly, is very…"
Monday
Gary McCray commented on Hugues's blog post Review and tests of anti-vibration systems
"The above pictures are very high resolution and you can click - zoom in on the right side pair of Lord mounts and the front, rear and right side Sorbothane hemispheres to get a good idea of the fit. Olivers and my Flip FPV Pros have factory…"
Monday
Gary McCray commented on Hugues's blog post Review and tests of anti-vibration systems
"This is the Amazon link to the Sorbothane 1 1/4" hemispheres I…"
Sunday

Gary McCray's Photos

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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…

Continue

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

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

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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