100KM
DavidJames
  • Male
  • Huntington Beach, CA
  • United States
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DavidJames's Friends

  • iSkyMaster
  • Cristian Miuta
  • jaideep gour
  • Andre Schoonbee
  • RM Aviation
  • Tim V
  • Anthonie Michael Muller
  • Chad Frazer

DavidJames's Groups

 

DavidJames's Page

Latest Activity


100KM
DavidJames commented on Chris Anderson's blog post Introducing OpenSolo!
"Using the Solex Android App the Open Solo Update went well for me.    Solex has a much better camera Heads Up Display for flying Solo."
Oct 21

100KM
DavidJames commented on Chris Anderson's blog post Introducing OpenSolo!
"Looks like it is working.    Here is a link to the installation instructions. https://github.com/OpenSolo/documentation/blob/master/README.md"
Oct 21

100KM
DavidJames commented on wayne garris's group Techpod Users
"I am approaching 3 years on my first Techpod.  It is amazing how many hours of flight time you can build up on a Techpod.   Typically I get about 2.5 hours of flight time at 13 m/s airspeed using two 6600 mAhr 4s…"
Aug 20

100KM
DavidJames replied to iSkyMaster's discussion Fail safe design for Fixed Wing plane using PixHawk
"I think that the 5v power supply on the standard 3DR power module will generate 5.3 volts down to a battery voltage of 6 volts or so.    I have only tested this myself accidentally by drawing the batteries down to 7 volts in the…"
Aug 7

100KM
DavidJames replied to iSkyMaster's discussion Fail safe design for Fixed Wing plane using PixHawk
"Hi,   The pixhawk typically gets 5v power from the power module on the voltage and current sense board and also from the 5 volts on the servo rail.   Here is a link to the section on powering the…"
Aug 6

100KM
DavidJames replied to Richard Morrissey's discussion Building a Drone for ecology work.
"This post by William Darry appears to be a spam post."
Aug 1

100KM
DavidJames replied to Richard Morrissey's discussion Building a Drone for ecology work.
"Richard, Fixed wing drones do work well with winds.   They cruise at about 12 meters per second.  They can fly for more than an hour.   You get nice evenly timed photos with the survey pattern setup to fly across wind and always…"
Jul 24

100KM
DavidJames replied to Richard Morrissey's discussion Building a Drone for ecology work.
"Event 38 has a fixed wing agricultural drone package.    It doesn't support the payload weights you are after but it would allow you to prototype the system operation.   I have found their fixed wing drones to be quite…"
Jul 20

100KM
DavidJames commented on Chris Anderson's blog post How do modern open source autopilots compare to aerospace-grade IMUs?
"I managed to get a 3DR Solo with the Pixhawk 2 logging high data rate gyro data.    The GYR1 data is logged at 1000Hz.   It looks like the Pixhawk 2 has a low noise setup and gets full performance out of the…"
Jul 1

100KM
DavidJames commented on Chris Anderson's blog post How do modern open source autopilots compare to aerospace-grade IMUs?
"@Anthonie That is the plan.   I was going to compare the Pixhawk1 with the APM2.6. I may be able to compare the Pixhawk2 on the solo too.    I am actually expecting things to be better on the battery.  USB power is pretty…"
Jun 28

100KM
DavidJames commented on Chris Anderson's blog post How do modern open source autopilots compare to aerospace-grade IMUs?
"I logged some data from a Pixhawk 1 and found that the rate noise is close to the the 0.005 deg/sec/root(Hz), single sided level in MPU6000 spec.   A little higher than the spec., but I was bumping the desk at bit when I logged the data…"
Jun 27

100KM
DavidJames commented on Jack's blog post Quadcopter ESC: Type, Firmware and Key parameters
"Here is a link to a post that identified the worlds best ESC with a series of tests.  :-) http://diydrones.com/forum/topics/worlds-best-esc-making-it-better?commentId=705844%3AComment%3A2225116"
Jun 26

100KM
DavidJames commented on Chris Anderson's blog post How do modern open source autopilots compare to aerospace-grade IMUs?
"I just noticed that the Invensense ICM-20602 with its 0.004 deg/sec/root(Hz) is a single sided PSD measurement.   This means that the ICM-20602 gyro angle random walk(ARW) is actually better than I showed in my early posts: ICM-20602 …"
Jun 23

100KM
DavidJames commented on Chris Anderson's blog post How do modern open source autopilots compare to aerospace-grade IMUs?
"APM 2.8 with the MPU6000 (0.005 deg/sec/root(Hz), 0.3 deg/root(hr)) is at least 2 times better than any of the HG1120s Pixhawk 1 with its MPU6000 (0.005 deg/sec/root(Hz), 0.3 deg/root(hr)) is at least 2 times better than any of the HG1120s Pixhawk 3…"
Jun 20

100KM
DavidJames commented on Chris Anderson's blog post How do modern open source autopilots compare to aerospace-grade IMUs?
"Comparing them in terms of angle random walk, the Invensense ICM-20602  0.004 deg/sec/root(Hz) is equivalent to 0.24 deg/root(hr).   This is 2.5 times less rate noise than the best HG1120.  The ICM-20602 is an excellent…"
Jun 20

100KM
DavidJames commented on Chris Anderson's blog post Nvidia demos visual navigation on 3DR Iris+
"I have always liked the Iris.     Even though I have a Solo now, I think the Iris is a better work quadcopter than the Solo.    The Iris has both a primary rf control link and a secondary rf link for telemetry.  …"
Jun 13

Profile Information

About Me:
Control System Engineer
Please tell us a bit about your UAV interest
UAV Planes
Hometown:
Huntington Beach, Ca.

DavidJames's Blog

+100km flight on a charge with a Techpod

Posted on November 14, 2015 at 4:00pm 20 Comments

The mission planner indicates that I got to 120km.    Seems reasonable, flying speed was about 14 m/sec for two hours and 25 minutes.  That is about 120km.

Here is the KML…

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The Snotbot, another drone for good!

Posted on July 30, 2015 at 11:14pm 2 Comments

Just when you thought it couldn't get any more interesting.      Along comes the Snotbot.    A whale research drone that is being developed by  Ocean Alliance and…

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