Patrick Duffy
  • Male
  • Manor, TX
  • United States
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Patrick Duffy's Friends

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  • Warren Fernandes
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Patrick Duffy's Groups

Patrick Duffy's Discussions

Arduplane RTL crash Skywalker X8 plane.

Started Dec 24, 2015 0 Replies

I had a crash flying a big wing (Skywalker x8), when I hit the RTL switch, the plane started to pitch/roll wildly and crashed. The plane was flying at 30 meters, and the RTL altitude was set to 100…Continue

Tags: crash, Arduplane

Arducopter 3.2.1 throttle failsafe always lands, no RTL or continue mission.

Started this discussion. Last reply by Patrick Duffy Sep 18, 2015. 2 Replies

Does anybody have this problem? Throttle failsafe always lands with Arducopter 3.2.1 no matter what the setting is, RTL or Continue Mission.  I have tested this several times by hovering and just…Continue

Illegal drone use could threaten hobby

Started Apr 22, 2015 0 Replies

I saw this on the DrudgeReport report today:…Continue

Crash with Arduplane 2.76, in FBWA mode

Started this discussion. Last reply by Patrick Duffy Jan 12, 2014. 6 Replies

Had a bad crash today flying in FBWA, with a plane that has logged 100+ flights without any issues. Only change was upgrade to 2.76. Was flying level at full throttle, and the plane just took a nose…Continue

 

Patrick Duffy's Page

Latest Activity

Patrick Duffy commented on Patrick Duffy's blog post Part 2: How to build a High-Definition FPV UAV using a Rasperry PI with HD camera, using a high speed WiFi link
"@Ashley,  I need to find some cloud storage that I can upload it. My free dropbox is full.  Let me see what I can do."
Tuesday
Ashley Webb commented on Patrick Duffy's blog post Part 2: How to build a High-Definition FPV UAV using a Rasperry PI with HD camera, using a high speed WiFi link
"Hi @Patrick, I've installed mavlink and mavproxy on my rpi 3 but I cannot get a heartbeat. I've changed the serial port to uart=1 in config, used S0 to access the digital serial because Im on the rpi3, I've changed the baud rate,…"
Monday
Patrick Duffy commented on Patrick Duffy's blog post Part 2: How to build a High-Definition FPV UAV using a Rasperry PI with HD camera, using a high speed WiFi link
"@babak_ea,  I use this pipeline on windows to record, but you could modify for linux: udpsrc port=9000  buffer-size=60000 ! application/x-rtp,encoding-name=H264,payload=96 ! rtph264depay ! h264parse ! tee name=record ! queue ! avdec_h264 !…"
Monday
babak_ea commented on Patrick Duffy's blog post Part 2: How to build a High-Definition FPV UAV using a Rasperry PI with HD camera, using a high speed WiFi link
"@Patrick,Is this Possible that ,Replace Rpi Instead of laptop on Ground station and using the Gstreamer for FPV and recording? If yes, what is the command that I use for ground station's RPi?"
Monday
Patrick Duffy replied to benbojangles's discussion Companion: Pi 2/3/Zero in the group Companion Computer Working Group
"@xemone, the PDB should power a PI zero, but I tried this with a PI3 and it failed. Not enough current output. I use a separate regulator now.  "
Apr 21
Ashley Webb left a comment for Patrick Duffy
"@Patrick, I have PI 3 but I can pick up a PI 2 if there are any issues with the image running on a 3. Thanks so much!!!"
Mar 31
Patrick Duffy left a comment for Ashley Webb
"Hello Ashley,  I can post a Raspberry PI image, which version do you have?  PI 2 or 3?"
Mar 28
Ashley Webb commented on Patrick Duffy's blog post Part 2: How to build a High-Definition FPV UAV using a Rasperry PI with HD camera, using a high speed WiFi link
"@Patrick, Hi, thanks so much for your previous help. I have a quick question and will then hopefully be up to speed with you guys. Im not getting a response when I try the ARMING_CHECK I installed Mavproxy and Mavlink over ssh after setting up a…"
Mar 13
Patrick Duffy commented on Patrick Duffy's blog post How to setup a Mission Planner HD-Video HUD using GStreamer and Mission Planner plugins
"@Roque,  yes you install MavProxy on the drone PI and configure it to connect to the serial port connected to your Pixhawk/APM.  MavProxy should be configured to forward the data to a UDP port on your GCS. "
Mar 8
Roque CANALES commented on Patrick Duffy's blog post How to setup a Mission Planner HD-Video HUD using GStreamer and Mission Planner plugins
"I use ezwifibroadcast, TX side pi3 and RX side pi3. I connected on TX side telem to rxtx of pi3. So you tell me to install mavproxy on RX side Pi3?"
Mar 8
Ashley Webb commented on Patrick Duffy's blog post Part 2: How to build a High-Definition FPV UAV using a Rasperry PI with HD camera, using a high speed WiFi link
"@Patrick, Yes, I'd love to use the same image as you. How do I access it? "
Mar 7
Patrick Duffy commented on Patrick Duffy's blog post How to setup a Mission Planner HD-Video HUD using GStreamer and Mission Planner plugins
"@Roque,  Please explain your configuration so I can comment on how to setup telemetry. I assume you are using a Raspberry PI with a PixHawk/APM connected to the serial port?  To get telemetry, you will need to install MavProxy on the PI…"
Mar 7
Patrick Duffy commented on Patrick Duffy's blog post Part 2: How to build a High-Definition FPV UAV using a Rasperry PI with HD camera, using a high speed WiFi link
"@Ashley, I can supply an image for the PI3 if you don't want to configure your PI yourself.  There are a few changes you have to make to the boot sequence so that the serial port is available for MavProxy to connect. Otherwise, you can…"
Mar 7
Ashley Webb commented on Patrick Duffy's blog post Part 2: How to build a High-Definition FPV UAV using a Rasperry PI with HD camera, using a high speed WiFi link
"@Patrick Thank you! I'll get up to speed with you guys quickly. Are you running APSync or do you recommend setting up through ssh/telnet? Then install pymavlink and mavproxy on the pi? I'm going off the ardupilot doc…"
Mar 7
Patrick Duffy commented on Patrick Duffy's blog post Part 2: How to build a High-Definition FPV UAV using a Rasperry PI with HD camera, using a high speed WiFi link
"@Ashley,  You are using and old design as the ethernet converter is no longer needed.  If you are using a raspberry PI you can connect the serial port of the PI to the APM/Pixhawk and get telemetry by using MavProxy to send the data to…"
Mar 5
Ashley Webb commented on Patrick Duffy's blog post Part 2: How to build a High-Definition FPV UAV using a Rasperry PI with HD camera, using a high speed WiFi link
"@Patrick, Thank you for sharing this project. I'm trying to set the work mode to tcp server in the serial to ethernet converter (it looks like usr changed the page location of the instruction and broke the link). Any instruction you can offer…"
Mar 5

Profile Information

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

Patrick Duffy's Blog

Google Cardboard Head-Up Display for Android

Posted on July 12, 2016 at 2:26pm 16 Comments

Google Cardboard your Drone!

This is a new Android App for running a Heads Up Display on a SmartPhone using Google Cardboard glasses to hold the smart phone.

I have posted a free version on dropbox…

Continue

Chinese drone maker Ehang Inc. Unveiled World's first drone capable of carrying a human passenger.

Posted on January 6, 2016 at 4:26pm 43 Comments

LAS VEGAS (AP) — Chinese drone maker Ehang Inc. on Wednesday unveiled what it calls the world's first drone capable of carrying a human passenger.

The Guangzhou, China-based company pulled the cloth off the Ehang 184 at the Las Vegas Convention Center during the CES…

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Ford issues $100000 challenge for developers to create drone to vehicle communication system

Posted on January 5, 2016 at 8:00pm 27 Comments

Here's the :Link

The news release said, "CEO Mark Fields said a goal is to set up a system, for example, where a…

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Media panics over drone flying near Obama motorcade

Posted on December 29, 2015 at 10:00pm 36 Comments

"Drone Buzzes President Barack Obama's Motorcade in Hawaii"

Link…

Continue

Comment Wall (5 comments)

At 9:12am on January 28, 2015, Warren Fernandes said…

Hey Patrick,

The issues that we're facing are not really related to the video link, that's perfect. Our telemetry link that uses zigbee 900's for communication completely stops transmitting as soon as the plane takes off. The connection comes back as soon as the plane lands, also our plane is built out of carbon fiber which we assumed was blocking the signal from our top mounted antenna. However shifting the antenna to the bottom of the plane hasn't helped. We've range tested our zigbee's and they seem to have no problem communicating over long distances, which has left us quite puzzled. Do you have any idea why this might be happening? I'll sent you pictures of the plane tomorrow!   

At 10:34am on January 28, 2015, Patrick Duffy said…

Hello Warren.  I have a similar setup on one of my fly wings. 5.8ghz video / 900mhz telemetry with zigbee. It's an EPO foam plane, so I have no issues with the carbon fiber, however, you should not have an issue if the antenna is bottom mounted. I would be interested to see your setup. It does sound strange. Have you eliminated cabling problems or connector issues? From your description of the problem, it appears that the actual radiated power is very low and it works as soon as the receiver gets close to the transmitter on the ground. I would try just walking the plane away from the CGS to see when it drops. 

For my latest build, I have both video and telemetry going over 5ghz digital so I have eliminated the 900mhz and extra electronics/antennas.  Are you using analog video or HD? Maybe you should consider eliminating the 900mhz link altogether. 

At 12:50am on January 30, 2015, Warren Fernandes said…
We're using HD video and we're definitely considering using the wifi link to transmit telemetry. However, we wanted the two separate radio links as a failsafe. We've tested our 900MHz system at fairly large distances (~1km) and it works perfectly outside the aircraft. The problem only crops up when the electronics operate inside the airplane :P.
Thanks for the help, I'll send you pictures of our setup soon so that you get a better idea of what our setup looks like.
At 6:24am on June 4, 2015, Paul Meier said…

Hello Patrick, stumbled on this in the http://diydrones.com/forum/topics/3-km-hd-fpv-system-using-commodity-hardware tread:

http://www.msdist.co.uk/product_Ubiquiti-WispStation-M5.php

seems its the same specs as the bullet, no need to mod for the antenna

At 4:10pm on March 31, 2017, Ashley Webb said…

@Patrick, I have PI 3 but I can pick up a PI 2 if there are any issues with the image running on a 3. Thanks so much!!!

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