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.

Hometown:
Mendota Illinois

Latest Activity

Richard Kennedy replied to Gary McCray's discussion Vibration Isolation and Dampening of APM / PX4 for version 2.9
"Nahh it just looked sort of too big and not pretty rectangular so I just cut some 45 degree angles on it for appearance. I think it helps it's past the controller a bit to though. Perhaps it creates a bit of vacuum in the back countering the…"
Monday
Philip Lorentz replied to Gary McCray's discussion Vibration Isolation and Dampening of APM / PX4 for version 2.9
"Thanks Richard, I'll try that on mine. Your plexiglass "deflector/wing/aerofoil" is not rectangular but I assume that happened to be what you had to hand rather than a calculated shape?"
Monday
Richard Kennedy replied to Gary McCray's discussion Vibration Isolation and Dampening of APM / PX4 for version 2.9
"@ Philip I had the same issue and it really bothered me because it tended to raise my pulse considerably!! When going forward quickly [ 10 mps or more ] it first lost 20 meters then when I stopped it shot up 25 then virtually stopped all motors…"
Monday
Philip Lorentz replied to Gary McCray's discussion Vibration Isolation and Dampening of APM / PX4 for version 2.9
"Thanks for those pointers. I checked out the air pressure issue by temporarily padding around the central Pixhawk area to create a different aerofoil section. The vibration increased marginally but the sink remained (see first log which includes a…"
Monday
Gary McCray commented on Chris Anderson's blog post WSJ scoop on forthcoming FAA rules -- pilots license will be required for commercial use unless Congress intervenes
"The Sky is falling - - Still. No surprise here, regardless of veracity, the FAA has yet to behave in a remotely reasonable fashion. Reacting to the blunder of the moment seems to just feed the frenzy and doesn't do much to help. What would help…"
Monday

MR60
Forrest Frantz replied to Gary McCray's discussion Vibration Isolation and Dampening of APM / PX4 for version 2.9
"In fast forward, if it sinks in Alt Hold, then look at two possibilities. 1) air pressure around the APM bottom side might be decreasing during fast forward flight. The copter thinks it is getting higher (lower air pressure) when it's not.…"
Saturday
Philip Lorentz replied to Gary McCray's discussion Vibration Isolation and Dampening of APM / PX4 for version 2.9
"Yes, you can get rid of $$$ much faster with UAVs than just tearing them up and chucking them in the air! Thanks for the offer, my existing logs are a bit on the large side so I'll log a shorter flight and post that. My X8 hovers in Alt Hold…"
Saturday

MR60
Forrest Frantz replied to Gary McCray's discussion Vibration Isolation and Dampening of APM / PX4 for version 2.9
"so all of you $$$ goes into UAVs ... good man you can use Excel Frantz.  it's free.  following directions stated by Cala, post your log file (in MP download the bin, create the log, then post it).  I'll take a look and post…"
Saturday
Philip Lorentz replied to Gary McCray's discussion Vibration Isolation and Dampening of APM / PX4 for version 2.9
"Hi Forrest, Many thanks for making your spreadsheet available, I am eager to use it but don't have access to the latest MS Excel. I have tried both LibreOffice Calc and Excel '97 with compatibilty pack but Libre's Basic macros…"
Saturday
Cala replied to Gary McCray's discussion Vibration Isolation and Dampening of APM / PX4 for version 2.9
"Follow this instructions, they are very clear, http://copter.ardupilot.com/wiki/ac_measuringvibration/ then read this one  http://copter.ardupilot.com/wiki/vibration-damping/ then download Forrest vibration Analyzer that you find in…"
Nov 22
Richard Kennedy replied to Gary McCray's discussion Vibration Isolation and Dampening of APM / PX4 for version 2.9
"I m new to reading logs. I have one loaded [ AP2 ] and see things on the right I can check to include in the graph. Which / what is the correct one to see vibration levels?? Thx"
Nov 21
Cala replied to Gary McCray's discussion Vibration Isolation and Dampening of APM / PX4 for version 2.9
"Thank's Forrest you win a barbacoe criolla when you visit Argentine ;)"
Nov 20

MR60
Forrest Frantz replied to Gary McCray's discussion Vibration Isolation and Dampening of APM / PX4 for version 2.9
"excellent!  Well done Cala.  Enjoy flying."
Nov 19
Cala replied to Gary McCray's discussion Vibration Isolation and Dampening of APM / PX4 for version 2.9
"Today Tarot time: my new cuad flies well in calm and windy days but, perhaps it can do it better? or it's OK like this? the only strange thing that I notice is that x values are the bigger ones¿?, and perhaps I have to repeat…"
Nov 19
Gary McCray commented on Todd Harper's blog post FAA Can Make All Drone Flights Illegal, Federal Court Rules.
"It is going to be an interesting next year. This Christmas, tens or hundreds of thousands of "toy" quadcopters, many with cameras are going to teens and pre teens. And many thousands more of Phantoms and other mid range ones are going to…"
Nov 19
Cala replied to Gary McCray's discussion Vibration Isolation and Dampening of APM / PX4 for version 2.9
"Thank?s Forrest, when I put one I didn't like very much for all that I learn, I see that washer, next purchase I ask for them or try to CNC made not to wait next year; thank's for recommendation :)"
Nov 19

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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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