Sean Headrick
  • Male
  • San Jose, CA
  • United States
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Trying to incorporate a delay between landing and takeoff for water sensor application.

Started this discussion. Last reply by Graham Dyer Feb 18. 9 Replies

Hi All,  I posted this over in ArduCopter User Group and got a few helpful responses but am still not havingsuccess. My goal is to land at specific way points around a body of water, like a lake for…Continue

 

Sean Headrick's Page

Latest Activity

Sean Headrick commented on Chris Anderson's group ArduPlane User Group
"@ tomi. By checking or un-checking the "reverse" boxes on the radio calibration page it will change the "autopilot control without affecting normal pass through control. I had the same problem."
Mar 16
Sean Headrick posted a blog post

Drones, Robotic Rovers and Citizen Scientists Join Forces to Sample a Lake’s Biodiversity

  About a year ago I first saw Ken McGary of Nerds for Nature present on the potential use cases for sUAV and ecological sensor data collection..Last weekend we ran the first in a series of tests to explore the feasibility of using UAV to test water quality. Over the past month or so this has gone from some drawings on a napkin to a proof of concept that performed near perfectly last weekend at a bioblitz at lake Merritt in Oakland CA. A…See More
Mar 2

Moderator
Graham Dyer replied to Sean Headrick's discussion Trying to incorporate a delay between landing and takeoff for water sensor application.
"Sean, the delay is not working for me either, so I suggest you open an issue in the issues list: https://github.com/diydrones/ardupilot/issues?state=open"
Feb 18
Sean Headrick replied to Sean Headrick's discussion Trying to incorporate a delay between landing and takeoff for water sensor application.
"Appreciate that. I have re-calibrated all of my ESCs although I am not sure that is the issue because it only happens in this situation. The land and auto take off work when I don't add in the "dummy" way points. But it ignores the…"
Feb 18

Moderator
Graham Dyer replied to Sean Headrick's discussion Trying to incorporate a delay between landing and takeoff for water sensor application.
"It's late here now but I'll try your mission in the morning to see if it'll work on my quad"
Feb 18

Moderator
Graham Dyer replied to Sean Headrick's discussion Trying to incorporate a delay between landing and takeoff for water sensor application.
"So two motors spin before the others which starts to tip the copter over? That is normally the ESC's that need to be calibrated or you're on an unlevel surface. I don't think any throttle parameter will affect just two motors."
Feb 18
Sean Headrick replied to Sean Headrick's discussion Trying to incorporate a delay between landing and takeoff for water sensor application.
"Graham, Unfortunately that did not work as expected. I had described that shortly after landing a couple (3 and 2) start spinning up just enough to slowly lift the left side of the copter up. I have been aborting at this point to avoid damage. I am…"
Feb 18
Sean Headrick replied to Sean Headrick's discussion Trying to incorporate a delay between landing and takeoff for water sensor application.
"I loaded that mission and will try it out first thing. I will let you know if it was successful. If so we should actually be able to demonstrate  usable data as we already have the sensor array built and working."
Feb 17

Moderator
Graham Dyer replied to Sean Headrick's discussion Trying to incorporate a delay between landing and takeoff for water sensor application.
"I'm not sure why it's not working, this may require one of the devs with knowledge of the inner workings of the code to say conclusively. I've added the dummy waypoints to your file if you want to try it out. Sorry I can't help…"
Feb 17
Sean Headrick replied to Sean Headrick's discussion Trying to incorporate a delay between landing and takeoff for water sensor application.
"Here you go. I thought I needed the conditional commands in between two nav. commands but I thought that is what I had with the "land" and "takeoff". I appreciate your taking a look."
Feb 17

Moderator
Graham Dyer replied to Sean Headrick's discussion Trying to incorporate a delay between landing and takeoff for water sensor application.
"Can you post your mission file here please? Some commands require a dummy waypoint after the command, don't know if this is the case here."
Feb 17
Sean Headrick posted a discussion

Trying to incorporate a delay between landing and takeoff for water sensor application.

Hi All,  I posted this over in ArduCopter User Group and got a few helpful responses but am still not havingsuccess. My goal is to land at specific way points around a body of water, like a lake for instance, delay for about 30 seconds while the various water sensors obtain readings, then take off to the next way point repeating the process at several locations.I have been successful at every aspect of this except the delay after landing and before taking off. I have tried "condition_delay" but…See More
Feb 17
Sean Headrick replied to Sean Headrick's discussion autopilot commands reverse of control surfaces in the group ArduPlane User Group
" Thanks Tridge,  I was thinking this was used instead of reversing your inputs in the radio. Thanks for being so fast to respond also.:)"
Feb 16

Developer
Andrew Tridgell replied to Sean Headrick's discussion autopilot commands reverse of control surfaces in the group ArduPlane User Group
"Hi Sean, To reverse the ailerons you need to change the RC3_REV parameter from 1 to -1. For elevator change RC2_REV from 1 to -1. To check the rudder try rolling the plane over in FBWA mode and see if the rudder moves to try to turn the plane back…"
Feb 16
Sean Headrick added a discussion to the group ArduPlane User Group
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autopilot commands reverse of control surfaces

 Hi all, All my control surfaces elevator and aileron work as expected in all flight modes through the radio inputs. But when I am in a stabilised mode the control surfaces (aileron and elm really stumped.  I really went through everything I could think of before bringing this up but I aevator) move counter to what is expected.  In ground tests, when I push the nose down, the elevatorgoes down which will force the nose down more. When I bank to the right, the right elevator comes up, again…See More
Feb 16
Sean Headrick replied to Sean Headrick's discussion Need to delay at landing/before takeoff for water sensor measurements in the group ArduCopter User Group
"I have a water sampler on the drawing board, but need to get to landing in the water with a delay as a first step. We have a datalogger set up to go,  but this part is holding me up a bit. I will post the project on the main page once we are…"
Feb 16

Profile Information

About Me:
I have been a cabinet and furniture designer for about the past 15 years. My wife and moved out to the west coast about 5 years ago. I got into RC with a coax about two years ago and found the ArduCopter project page a year later. There was no turning back.
Please tell us a bit about your UAV interest
I am fascinated with the coming together of electronics and mechanics that make a multirotor possible. Add in the autonomous ability to perform tasks and take action opens up worlds of possibilities.
Hometown:
San Jose

Sean Headrick's Blog

Drones, Robotic Rovers and Citizen Scientists Join Forces to Sample a Lake’s Biodiversity

Posted on March 2, 2014 at 12:43am 0 Comments

  About a year ago I first saw Ken McGary of Nerds for Nature present on the potential use cases for sUAV and ecological sensor data collection.

.Last weekend we ran the first in a series of tests to explore the feasibility of using UAV to test water quality. Over the past month or so this has gone from some drawings on a napkin to a proof of concept that performed near perfectly last weekend at a bioblitz at…

Continue

HUGO's Multi Rotor Prop Guards. What is the best approach?

Posted on July 8, 2013 at 8:00am 9 Comments

 

I have been working recently with the Robotics Association at Embry-Riddle Aeronautical University to provide the multi-rotor component of their 2013 Roboboat competition.…

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HUGO flight tests with new GPS Decibal readings, Loiter, Stabilise

Posted on January 25, 2013 at 7:30am 8 Comments

I started  to document some flights wth HUGO this week . Here is some footage of "loiter" and "stabilise" flight modes.Also took some decibal readings from approx. 10' to 1.5'. The dB level never exceeded 95 dB. This is not a scientific test. I hope to show a comparison with open frame as a control and get some proper testing procedures in place. 

  I have been using a single axis gimbal for FPV ,…

Continue

Comment Wall (1 comment)

At 11:49am on October 23, 2013, MicroPilot Will said…

Hi Sean

 Thanks for joining our group. Very nice quadcopters you have, they look robust and very clean. Feel free to ask me any questions you might have. Here are some specs on our heli autopilot which is capable of running various multirotor applications.

http://www.micropilot.com/products-mp2128heli-specs.htm

 

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