About

Gender

Male


Location

Manor, TX


About Me:

I am a Sr. Software engineer for ETS-Lindgren and work on antenna analysis software for the wireless industry.


Please tell us a bit about your UAV interest

I have a plane with ArduPilot, and am interested in development for this project.


Hometown:

Manor, TX


Activity Feed

Patrick Duffy replied to Patrick Duffy's discussion Arduplane 3.9 flyaway with bad compass
"I'm pretty sure it had GPS lock at arm, but who knows?  I'm having to wait to do the grid search until I have time.  It's more about solving the mystery at this point, rather than just recovering the model.  My other theory is that the weather cause…"
Dec 5, 2019
Patrick Duffy replied to Patrick Duffy's discussion Arduplane 3.9 flyaway with bad compass
"Hello Ronald,

    I can't say it flew straight away, but it did switch to RTL, as I could see the flight mode change on the display.  Another possible theory is that the home position was incorrect and it flew to a false home.  I'm going to try ano…"
Dec 4, 2019
Patrick Duffy replied to Patrick Duffy's discussion Arduplane 3.9 flyaway with bad compass
"Chris,
FBWA worked perfectly.  I think the GPS glitched.  But I may never know. Chris Anderson said:
Probably not the compass. Did you try any other auto mode before the RTL, such as fly by wire or stabilize? "
Dec 3, 2019
Patrick Duffy replied to Patrick Duffy's discussion Arduplane 3.9 flyaway with bad compass
"Hey Darrell,

   Yes, I've used aerial photos before to recover a lost model.  Unfortunately, I don't know exactly which direction it was flying, I couldn't see the ground through the video, it was foggy and I lost vision.   I did a survey in one di…"
Dec 3, 2019
Patrick Duffy replied to Patrick Duffy's discussion Arduplane 3.9 flyaway with bad compass
"Andreas, I left the defaults alone with the compass so I don't think compass-learn was enabled.  I'll certainly do so in the future.   I had one fly-away years ago, but that was when Arduplane was first released.   It's possible there was a GPS glit…"
Dec 3, 2019
Patrick Duffy posted a discussion
Has anybody had the experience with a fly-away on v3.9, when there is a compass problem?  I tried RTL and my plane flew in the wrong direction, even with a good GPS lock, and I was unable to recover because it went out of range of my transmitter bef…
Nov 30, 2019
Patrick Duffy replied to Nelson Hom's discussion I want to send fpv live feed video to phones.
"You can use a Raspberry PI (or PI zero) to stream multiple video channels to a ground station. This drone has 3 cameras - PiCam (1080p), ThermApp thermal imaging camera, and a low-light B&W (PAL) video (RunCam Eagle 2), and all 3 streams go over a 5…"
Jan 26, 2019
Patrick Duffy commented on Patrick Duffy's blog post Thermal Imaging for your Drone on a Budget
"@AI B, are you using the Raspberry PI? The method I use to control the camera is through the PI. Why connect the camera to the PX4?  I connect the PX4 to the Raspberry PI if I want the flight controller to trigger taking pictures.  The FLIR Vue Pro…"
Aug 28, 2018
Patrick Duffy commented on Patrick Duffy's blog post Thermal Imaging for your Drone on a Budget
"@AI B,  it will probably work.  You will need to write your own code to connect to the stream, but it shouldn't be too difficult.  Seems like the cost is more if you use this module, compared to the USB camera they sell online though. What is the ad…"
Aug 28, 2018
Patrick Duffy commented on Patrick Duffy's blog post How to control a GoPro Camera on APM/Pixhawk with a Raspberry PI using WiFi
"@Atico F,   Yes it is possible to modify the script to switch between photo and video mode. You will need to use an extra channel on your transmitter and a second PWM input on the PI.  The PI zero should also work if you use the second version with…"
Aug 7, 2018
Patrick Duffy commented on Patrick Duffy's blog post How to setup a Mission Planner HD-Video HUD using GStreamer and Mission Planner plugins
"@Jeff, Have you built the code from the Freedesktop.org source?  I don't think you should need a custom version now, as I think the bugs were fixed. The changes I made were hacks. I think I already updated my code to the latest version. I was not ke…"
Jul 9, 2018
Patrick Duffy commented on Patrick Duffy's blog post How to setup a Mission Planner HD-Video HUD using GStreamer and Mission Planner plugins
"@Jeff Ward,  Those references are to gstreamer, and qtgstreamer libraries. You will need the development version of gstreamer and the source code for qtgstreamer (on freedesktop.org)  If you downloaded the VR version, that's for Android, not windows…"
Jul 6, 2018
Patrick Duffy commented on Patrick Duffy's blog post How to setup a Mission Planner HD-Video HUD using GStreamer and Mission Planner plugins
"@Jeff Ward,  Let me know what kind of customization you are looking for and I can possibly help you out. Building from source could be a pain."
Jul 5, 2018
Patrick Duffy commented on Patrick Duffy's blog post Thermal Imaging for your Drone on a Budget
"Hello Juliasn,  the Flir camera is connected over USB, you need an adapter cable. Streaming is done with GStreamer via WiFi to the ground station. You can see the gstreamer commands used in the blog.  There is an android or windows app to play back…"
May 22, 2018
Patrick Duffy commented on Patrick Duffy's blog post How to control a GoPro Camera on APM/Pixhawk with a Raspberry PI using WiFi
"@Emanuele,
   The GoPro model I used in the example was the silver 3. I have also used the Session camera with some changes to the python. 
I do not know where the example commands have been moved on github. Did you try a google search?"
Oct 17, 2017
Patrick Duffy commented on Patrick Duffy's blog post How to control a GoPro Camera on APM/Pixhawk with a Raspberry PI using WiFi
"@F Javier Marin,  you could use a pi zero if you use the usb port to connect a wifi dongle, or use the new Pi zero that has wifi. "
Sep 12, 2017
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