All Blog Posts (10,380)

New offer of help with tuning PID loops

I suspect my first method for tuning PID loops was not a great hit because it required 3-view drawings or photos of the aircraft plus inertia data all of which is a bit fiddly. I've now got a new method based on flying the aircraft and logging accelerometer and gyro outputs in response to elevator, rudder and aileron doublets. This method works well with simulated data and I'd like to try it on real data. If you are interested in this experiment, let me know your email address and I'll send…

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Added by George Tarrant on August 29, 2011 at 11:02am — 14 Comments


3D Robotics
Nice new feature in Mission Planner: waypoint hit radius circles

As you've probably noticed, there are new features added to the Mission Planner almost every day (Michael Oborne is amazing). I thought I'd just highlight today's, which is neat. In the Flight Planner screen, your current Waypoint radius (the "hit zone" that qualifies as having arrived at the waypoint, which you can set) is…

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Added by Chris Anderson on August 29, 2011 at 7:52am — 32 Comments


Developer
Lesson: always fly with telemetry or a spotter!

After some painstaking PID tuning and some near crashes, I decided to take out my octocopter and see what kind of thrust it was able to generate. After hovering for a moment, I gunned the throttle and the machine disappeared into the sky. It was beautiful. The only problem was that I had forgotten my Xbee receiver and thus had no telemetry data. My glee quickly turned into panic as I tried to judge which way the octo was facing and how to get it back. As it drifted further and further with…

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Added by Adam Rivera on August 29, 2011 at 7:00am — 13 Comments

My first bungee launch (crunch!)

I've just equipped a falcon epo flying wing from hk with an ardupilot mega and a gopro.

I try to launch it with a diy bungee launcher without much success, this launch has not damaged the wing but after the second launch i've to glue it (after a…

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Added by Dimitri on August 29, 2011 at 6:30am — 9 Comments

The Biggest UAV i did

Photo of biggest UAV i did.

Added by Ahmed Rehan on August 28, 2011 at 11:20am — 35 Comments


Developer
APM automatic flap deployment ready for testing.

 

I have uploaded a new revision of APM to the trunk repository (r3665) with automatic flap functionality. I am really pressed for time so am hoping some community members can do some flight testing on it and report back.

 

Flap functionality can be assigned to channel 5 or 6, using the…

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Added by Doug Weibel on August 27, 2011 at 5:08pm — 14 Comments

New Vtail 8 build started

Nice new build, based on 1/2 ally tube, RCT 750 kv motors, 30 amp 4S ESC's, 10 by 4.5 props.

Overall width 680mm , length 840mm

 

About 5 hours work in it so far, the centre section and motor mounts are pre made for me out of 2.5mm fibreglass

The aluminium is all hand cut and drilled (lots of…

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Added by Mathew Wellington on August 27, 2011 at 11:52am — 15 Comments


3D Robotics
Delivering drugs by ArduCopter

CNET reports on a cool proof of concept--delivering life-saving drugs by UAV in parts of Africa where road are poot. I've advised that team that fixed wing UAVs might be a better choice for those…

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Added by Chris Anderson on August 27, 2011 at 10:29am — 8 Comments

Travelling with CamRaptorY690

I tried to fly softly with my little Y6 and finally put the Go Pro in front the two arms to avoid seeing propeller in the movie.

Here is the result without Roll compensation for the Go Pro

Question : in the last firmware 2.0.39 did the camera stabilization is better ?? than 2.0.35


Added by patrice.rance on August 27, 2011 at 3:27am — 2 Comments

like to introduce the new Quad copter GPS P4 for UAV.

like to introduce the new Quad copter GPS P4 for UAV.
any one that knows me knows I am not a fan of cheep things but this model I take it without the electronics. had bad experience with Q's the electronics. But I will sell it to you with a grain of salt. the new GPS…
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Added by OG on August 25, 2011 at 6:57pm — 8 Comments


3D Robotics
Anybody recognize this drone?

It…

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Added by Chris Anderson on August 25, 2011 at 5:30pm — 67 Comments

Traditional Helicopter Stabilise & Loiter Test

 

 

The aim this evening was to prove the new flybarless head with the ACM, and whether it would make a good deal of difference to the flight characteristics. We flew a full 5 min flight which is pretty good as the Heli is quite heavy now with all the extras fitted to it. Also i use a separate flight and main Power battery. a 2700mah 2cell and a 5000mah…

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Added by malcolm churn on August 25, 2011 at 1:46pm — 5 Comments


3D Robotics
Meet the Developers: Paul Mather (aka Happy Killmore)

Today's Developer is the genius behind the HK GCS, which you all know and love. We'd had ground stations before, but Paul Mather was the first to really do them right. I still remember the day he rolled out recording and replaying missions, which was mind-blowingly cool. And when he added voice synthesis, I felt a real surge…

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Added by Chris Anderson on August 25, 2011 at 12:18pm — 17 Comments


3D Robotics
New versions of APM and Mission Planner released: mostly minor bug fixes

We've released new versions of the APM and Mission Planner, which mostly correct some minor bugs but add a few new features (see change logs below).

 

The Mission Planner will automatically load the new APM 2.23 code when you click on the plane icon on the firmware tab. The APM 2.23 source…

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Added by Chris Anderson on August 25, 2011 at 9:28am — 1 Comment

Remzibi OSD + APM Integration v2.22

Because I was searching a long time for an up to date APM +Remzibi´s OSD without success,

I made it by myself.

If you also like the new Version and dont know how to integrate remzibi´s feel free to use mine!

Download APM 2.22 + Remzibi

 

All Features of APM 2.22 are…

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Added by Mike on August 25, 2011 at 3:00am — 14 Comments

FAA sUAS NPRM publication date pushed back...again

If anyone thought the FAA could not move any slower on producing rules for sUAS...they were wrong. The last publication goal date was 11/17/2011...now the new proposed publication date is 01/06/2012 according to the Department of Transportation's website.…



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Added by David on August 24, 2011 at 10:23pm — 4 Comments

Chip design, open source, and DIY: Part 1, Indie chip design

Above: Simple circuit using a transistor (an N-channel MOSFET), a resistor, and a capacitor. Left shows the schematic, right shows the layout.

Following discussions from a previous…

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Added by Geoffrey L. Barrows on August 24, 2011 at 4:39pm — 8 Comments

First multi-rotor (ArduCopter Quad) up and flying :)

It only took  my JDrones kit from www.buildyourowndrone.co.uk a few days to get to Iceland. I started building it on wednesday night and it flew successfully on saturday morning!

(Apologies for the camera tilt) In this clip I am on the second 3000mAh battery and tentatively testing the altitude hold.…

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Added by Björn Geir Leifsson on August 24, 2011 at 3:30pm — 3 Comments


3D Robotics
Meet the Developers: Max Levine

Today in Meet the Developers, please meet Max Levine, another graphic artist par excellence! You've all seen his work in the simple, stylized icons in the Mission Planner (see below), but he's also behind many of the diagrams and instructional graphics in the ArduCopter manual.

 

He's also working with…

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Added by Chris Anderson on August 24, 2011 at 2:00pm — 9 Comments

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