April 2011 Blog Posts (172)

Maiden and second flight videos

Here are videos from my maiden and second flight. First one ended with a bad crash on a garden house, my bad I didn't realize how much space I needed to fly it for the first time. The second one isn't complete as my girlfriend forgot to pack her memory card and we couldn't capture it all. On the second one I managed to control it in circles much higher than what you see in the video, but you'll have to take my word for it…


Added by François Ubald Brien on April 25, 2011 at 9:07am — 5 Comments

Rude response from my AMA District VP

I asked my District Website if they would post info about the AMA elections since nominations are due June 16. As an AMA member I thought it was an important issue.






Response from Bob Brown, AMA District VP:


"The following gentleman is the one we want nothing to do…


Added by Duane Brocious on April 25, 2011 at 8:30am — 17 Comments

Transmitter failure, but APM saves the day

I finished my SkyWalker build last night, and went out to CMAC to take it for its first flight. All the ground tests looked good (including the new 'system check' in mavproxy) so we took it for the first flight. About 60 meters into the flight I heard "MODE STABILIZE" from mavproxy, and I lost control. Jack and I watched as the…


Added by Andrew Tridgell on April 25, 2011 at 5:31am — 19 Comments

On-Board Video from SparkFun AVC - collision with light pole

Here is a video clip from Paul Mather and my last minute entry into the SparkFun Autonomous Vehicle Competition.

The day before the competition I realized that the DIYDrones community had an unused entry into the competition and I had a second UAV ready to go, so I recruited Paul Mather as a teammate and we became team "Plan B", flying a SkyWalker…


Added by Doug Weibel on April 24, 2011 at 7:31pm — 7 Comments

[BOOK] 'PID Control, Implementation and Tuning' by Tamer Mansour

Publisher Intech ISBN 978-953-307-166-4, Hard cover, 238 pages

Author Tamer Mansour


The PID controller is considered the most widely used controller. It has numerous applications varying from industrial to home appliances. This book is an outcome of contributions and inspirations from many researchers in the field of PID control. The book consists of two…


Added by Bertrand Duchiron on April 24, 2011 at 4:07pm — 1 Comment

Second flight was a "success"

Flew my quad for the second time today. I decided to skip the acro mode with which I had so much trouble keeping the quad stable last time and give it a try in stable mode. With the default PID setting I was able to flight it pretty stable under light wind. I made a few hard landings and finally broke my landing gear and a prop but overall I'm pretty satisfied with the performance I got from it. Last time kinda discouraged me but now I feel more comfortable controlling it (a couple hours in…


Added by François Ubald Brien on April 24, 2011 at 1:20pm — 4 Comments

ACM Y6 in a desert :)




Ardu Copter Mega rev.1914

Motors: BC2836 750kv ESC: 30A

Props: Top 10x45 EPP , Bottom 10x45 EPP Composite

3S 5000mah


Jason added a new…


Added by Max Levine on April 24, 2011 at 12:29pm — 9 Comments

First flight - first (BIG) crash

First enemy: WINDY DAYS.



It was windy but ive managed to find some less windy areas to fly today,

i decided to give it a chance, after checking all's OK in the living room, hovering about 10cm...


GPS hold seemed to work, as at one point it was drifting a lot with the wind and suddenly changing direction back to the launch point…


Added by ARHEXA on April 24, 2011 at 7:48am — 11 Comments

A Quads First Flight


  4-23-10 My QuadCopter makes it first flight.   Success!

Added by Russell B. Sutton on April 23, 2011 at 3:51pm — 1 Comment

ACV 2011 Coverage: Dramatic Aerial Runs


Heres a summary of Aerial Round 1:


The aerial heats started off with a blast as Team Lawn Dart one crashed into turn one's (familiar) tree shortly after an amazing auto-takeoff.

Team DIY- Drones equiped with Ardupilot  Mega auto had a great run with an auto-take off but unfortunately did not finish the run (hawk sky pic below).

Team Arducopter was the first entry and had a smooth and dramatic run, making  the first three corners well. Almost…


Added by SciFly on April 23, 2011 at 11:00am — 5 Comments

AVC 2011 : Team Autocrusher (ground) competes the course!

The team completed the course in 2:04 with a 30 sec time reduction for driving through the hoop!

Way to go team Autocrusher!



Added by SciFly on April 23, 2011 at 9:03am — 2 Comments

2011 Sparkfun AVC kickoff coverage

Boulder, CO

Cold weather and light snow hasnt deterred dedicated competitors and spectators from showing up at the 2011 Sparkfun AVC.Attached is the morning schedule. The first heat had several large ground vehicles, including a wheel chair equipped Dinosaur of the sorts, which almost immediately headed for the trees. Stay tuned for blow by blow updates.Go…


Added by SciFly on April 23, 2011 at 8:55am — 1 Comment

Latest Notice from the FAA on (s)UAS operations published 3/28/2011

Haven't seen this posted anywhere yet.

This is the current information and interim guidance on air traffic policies and prescribes procedures for the planning, coordination, and services involving the operation of unmanned aircraft systems (UAS) in the NAS.


It is in effect from March 28th 2011 until March 27th…


Added by Duane Brocious on April 22, 2011 at 10:30pm — 11 Comments

Automatic Gliding for UAV's

As I can see everyone liked the post of GliderUAV about automatic thermalling. I have tremendous interest in such things.


For a few month now I've been developing algorithms which will help our UAV's increase their flight times. And I've started to get some positive results.


Right now one algorithm has been already tested on x-plane HIL simulation, and I will say - it is…


Added by YureZzZ on April 22, 2011 at 3:07pm — 9 Comments

iPhone telemetry: a short tutorial

Hello everyone,


After experimenting with tuning the APM, a friend (Roel Offermans) and I decided to implement telemetry. Even though it may seem counterintuitive to use a phone rather than an Xbee, when you already have the phone it saves some money. Another advantage is that it has 'unlimited' range, as long as you have network coverage.



Added by Fabien Bruning on April 22, 2011 at 8:13am — 7 Comments

3D Robotics
New product in the DIY Drones store: APM telemetry kit!

Check it out: an all-in-one telemetry kit for ArduPilotMega, all set up and ready to go! No more fussing around with Xbee configuration. $165 for the total, which includes the custom configuration.


In this kit you will find…

Added by Chris Anderson on April 21, 2011 at 5:00pm — 56 Comments

Path to an Aerial Photography Drone - 4

Airframe #2 - Decisions and path options

I decided to follow parallel paths to my goal.

The first path is to continue development on my own airframe.

The second path is to use an off the shelf airframe to work on the electronics end of my goal.


Airframe Path:

As a part of my airframe development, I…


Added by Thon on April 21, 2011 at 11:16am — 10 Comments

Integrated FPV controller TX/RX 2.4GHz/5.8GHz

For my FPV projects I wanted a system that is easy to install in different vehicles. I always disliked that the FPV control of PAN/TILT systems used additional channels of my primary rc tx.

So I decided to build and integrated system that works independently from the RC and/or UAV setup. It should have and own receiver for controlling at least 2 cameras, a video downlink…


Added by Marco Glattfelder on April 21, 2011 at 3:56am — 13 Comments

Great article on the benefits of ADC oversampling.



As you all probably know, the Ardupilot/ArduIMU uses ADC  oversampling to achieve greater than 10 bit resolution of the internal ADC. I beleive they achieved alomost 12 bit resolution- not bad, I'd say.When I discovered this, I started using that approach to increase the resolution of cheap ADC's at my work, saving but loads of $ in the…


Added by SciFly on April 20, 2011 at 3:33pm — 15 Comments

Heavy DSLR mount - Part I

The tilt (pitch) servo mounted and working in the heavy DSLR mount system:




as followers know, my copter will carry a 1.5kg DSLR system.


I'll be testing the mount with DSLR attached really soon,

so i can figure out if this 13kg servo is enough.

some 'intuitive' tests showed it has great torque, but might be a bit at…


Added by ARHEXA on April 20, 2011 at 2:00pm — 5 Comments

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