Roy Stevens
Roy Stevens
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  • Northfield, OH
  • United States
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Roy Stevens's Discussions

Masters Thesis in UAV Research

Started this discussion. Last reply by AW Feb 27, 2009. 1 Reply

 

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John commented on Roy Stevens's blog post 'Ardupilot RF Interference?'
I'd like to say that although my first couple of boards (v1) from sparkfun were missing caps and one had damaged LED's, I have had limited success worth far more than the cost of ten of theses boards, and I am very impressed with the…
Jul 16, 2009
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Roy Stevens commented on Chris Anderson's blog post 'ArduPilot flight test 2: RTL'
Strangely, I think I'm seeing the same thing happen to me in real life. Occasionally when I turn on the ardupilot, it will just turn the rudder completely one direction and it will lose altitude pretty fast (because it also spools down the…
Apr 17, 2009
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Roy Stevens commented on Roy Stevens's blog post 'Ardupilot RF Interference?'
Thanks for your help, everyone. In an effort to avoid spending much more money, we got ahold of a ferrite ring & used it on the wires coming in/out of arudipilot. That helped a bit but the thing that really did the trick was completely wrapping…
Apr 17, 2009
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Bryan Cuervo commented on Roy Stevens's blog post 'Ardupilot RF Interference?'
Jeff and Roy, We encountered the same problems with our Futaba 9C and PPM Rx. Rock solid untill ArduPilot was put in the loop. Everything would start twitching when I moved 40 ft away with the Tx antenna down. Tried rerouting wires, replacing…
Apr 13, 2009
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Chris Anderson commented on Roy Stevens's blog post 'Ardupilot RF Interference?'
We've never encountered that in any Futaba, 72Mhz or 2.4Ghz. When your'e doing the range test, is the Tx antenna down? If so, 200ft is probably okay.
Apr 13, 2009
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Sgt Ric commented on Roy Stevens's blog post 'Ardupilot RF Interference?'
This type of interference is a big issue in FPV circles. and led me to switch to Futaba 2.4 Ghz FAAST system. I had tried wrapping the servo wires 3 times around magnet donuts and using commercial chokes that we use in the PC world to cut down of…
Apr 13, 2009
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Roy Stevens commented on Roy Stevens's blog post 'Ardupilot RF Interference?'
Thanks for the suggestion, Chris. I tried twisting up all the servo wires I could and keeping everything far apart (nothing transmitting inside, yet). Unfortunately I'm still getting heavy twitching. What's more is that it depends heavily…
Apr 12, 2009
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Roy Stevens commented on haroon's blog post 'No Title'
I'm not sure if you'll find something like that available for free. Such programs will also be quite complicated to use and get a meaningful result. I use ANSYS ICEM CFD which is very expensive. If you can get your hands on it, though, it…
Apr 12, 2009

Roy Stevens's Blog

Roy Stevens

Ardupilot RF Interference?

Posted on April 10, 2009 at 3:21pm 7 Comments

I've been having some problems intermittently with RF interference when flying my Nexstar EP. I always thought it was just some local interference which kicked on and off for whatever reason and that I needed to just do a range test before each flight.

However, just today I decided to try a range test with & without Ardupilot installed. With Ardupilot I could only go about 200 feet away before i started getting pretty significant twitching of the servos. Without Ardupilot everything… Continue
Roy Stevens

UAV Senior Project

Posted on January 18, 2009 at 4:19pm 1 Comment

Hi everyone,

My classmate and I are building a UAV as part of our senior project. We're going to base it off the Ardupilot. Despite having little experience directly in UAVs, we think, perhaps incorrectly, that the project will be lacking a bit in depth (thanks to Chris Anderson and Jordi Munoz for doing a lot of the real work for us). We are looking for any suggestions from the community for a good add-on project that could be accomplished in a couple months. Anyone have any ideas? Thanks… Continue

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