"Nice! Are you using the default gains settings or your own-determined gains settings for the quad?"
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John A. Malley
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- Bellevue, WA
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John A. Malley commented on Jamie Ahmed's blog post Let's talk about Inertial Dead Reckoning!"@Biggles from Monday - Yes, that's true, but the equipment on the pre-ring laser gyro transport category aircraft had very low gyro rate biases/offsets by design. VG/DG (vertical gyros/directional gyro) technology relied on precision bearings…"
John A. Malley commented on Chris Anderson's blog post A photo tour of the 3D Robotics TJ plant"Thanks for sharing the tour and the great pictures. And thanks to you all at 3D Robotics for your work and effort, it's much appreciated! May your business grow!"
John A. Malley commented on Chris Anderson's blog post New issue of IEEE Robotics journal does deep comparison of ArduCopter, other open source FCs"IEEE Control Systems Magazine October 2012 is devoted to Unmanned Aerial Vehicles as well - autopilots for ultra lightweight robotic birds, cooperative control of multiple autonomous vehicles, autonomous control of unmanned combat air vehicles. I…"
wraith commented on John A. Malley's blog post Foam Pad "launch pad" eliminated takeoff instabilities in Acrobatic and Stablizer Modes"unfortunately im not running my apm board, the board im using performs the same, and yes its just the standard x config, i was running apm until my receiver died when it was 10 metres up, the front is basically like a tri where the arms are 120…"
John A. Malley commented on John A. Malley's blog post Foam Pad "launch pad" eliminated takeoff instabilities in Acrobatic and Stablizer Modes"That's an interesting configuration! It's got bilateral symmetry instead of the 3DR Drone's four-fold symmetry, and a very stable base from which to take off and land. Did you customize the ArduCopter code, or are you using the…"
wraith commented on John A. Malley's blog post Foam Pad "launch pad" eliminated takeoff instabilities in Acrobatic and Stablizer Modes"found my lead, i made this frame just to see how it flys"
wraith commented on John A. Malley's blog post Foam Pad "launch pad" eliminated takeoff instabilities in Acrobatic and Stablizer Modes"thats right no landing gear at all i land it directly on the bottom plate on the quad, ill post a picture as soon as i find my lead for my phone"
John A. Malley commented on John A. Malley's blog post Foam Pad "launch pad" eliminated takeoff instabilities in Acrobatic and Stablizer Modes"@John Githens - thanks!
@R.D. Starwalt - agreed, Bob Roach's suggestion looks like one to try out.
@Bob Roach - thanks!
@wraith - Do I understand correctly that your drone doesn't have any mechanical supports to keep it up off the…"
"Furniture foot that also looks like a crutch tip! How clever!
Another option added to the idea ranch. Nice one Bob R.!"
wraith commented on John A. Malley's blog post Foam Pad "launch pad" eliminated takeoff instabilities in Acrobatic and Stablizer Modes"hi, i take off in acro mode , my quad lifts straight up , no wobble nothing, in saying that i m not using the 3dr frame and i dont have any legs"
Bob Roach commented on John A. Malley's blog post Foam Pad "launch pad" eliminated takeoff instabilities in Acrobatic and Stablizer Modes"Handy trick: Go to your local hardware store and buy some rubber 3/4 inch diameter furniture feet. Push them onto the 3DR "toes" . No more snags and much more robust to landings with horizontal velocity...."
John Githens commented on John A. Malley's blog post Foam Pad "launch pad" eliminated takeoff instabilities in Acrobatic and Stablizer Modes"Some ideas on this link... Cheers!"
John A. Malley commented on John A. Malley's blog post Foam Pad "launch pad" eliminated takeoff instabilities in Acrobatic and Stablizer Modes"Interesting - balls on the ends of the legs should keep the 3DR legs from hooking into rough lawn/dry grass. Need to find something light but easy to fit to the legs. Maybe glued Styrofoam balls from a hobby/craft store can be fitted to the leg…"
"I too had issues in grass with the stock 3DR legs/toes. I think the side forces cause the ends of the legs. 'toes', to dig/hook under the stuff.
Most of my flights are off concrete (my driveway). That has caused a different issue.. worn…"
John A. Malley posted a blog postFoam Pad "launch pad" eliminated takeoff instabilities in Acrobatic and Stablizer Modes
Summary: Takeoff from a foam pad on top of dry grass/lumpy lawn alleviated instabilities experienced when taking off from the dry grass/lumpy lawn. No gain changes made to the 3DR ArduCopter code, using the "factory" settings for Stabilizer and Acrobatic modes.DetailsStarted basic flight testing of a ready-to-fly 3DR ArduCopter-B with…See More
Profile Information
- About Me:
- Owner and operator of aerospace consulting company in USA. Hands-on work in Boeing autopilot control laws and certification for B737 classics and B777.
- Tell us a bit about your UAV interest
- Interested in UAV autopilot control laws, sensor integration, Flight Management control laws, as applied to UAVs, investigating new ideas for UAV control, data exchange between UAVs, UAV formation flying, etc.
- Hometown:
- Bellevue, Washington, outside Seattle
John A. Malley's Blog
Foam Pad "launch pad" eliminated takeoff instabilities in Acrobatic and Stablizer Modes
Posted on September 10, 2012 at 11:30am 11 Comments 0 Likes
Summary: Takeoff from a foam pad on top of dry grass/lumpy lawn alleviated instabilities experienced when taking off from the dry grass/lumpy lawn. No gain changes made to the 3DR ArduCopter code, using the "factory" settings for Stabilizer and Acrobatic…
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