All Blog Posts (10,540)

Engineering analysis of RC helicopter control

I recently wrote my thesis on the topic of using feedback control to provide a vertical position autopilot for an RC helicopter. I used a Gaui EP100 on a test-rig to test the control techniques. The control theory has been designed so that it can be applied to a helicopter of any dimension/number of blades. It is presented in this 26 page document. I hope this can be of…


Added by David Browne on July 24, 2011 at 9:47am — 6 Comments

VR Dragon Hexa Coax Heavy lift , Payload Test

Dear Friends,

in this video you can see my last Payload Test on this Heavy Lift Hexa Coax configuration.


The VR Dragon build list :

Multipilot32 :


ESC Motorius 50 Amp :…


Added by Roberto Navoni on July 24, 2011 at 1:21am — 2 Comments

Camera Mount Stabilization with MultinoCopter


Hi Guys,


I'm working on the MultinoCopter project since 2 months. It is a 50x50mm size board with full compatible arduino pro mini architecture and 9DOF imu. I didnt share it because i have to finish the multicopter code before. Now it is working as a serial IMU for the computer based projects (calculating euler angles) and camera stabilizer. 

Yesterday i tested the camera stabilization code on the 3 axis. The mount coming from a…


Added by Melih Karakelle on July 24, 2011 at 12:00am — 11 Comments

Maxim Acquires SensorDynamics

Do you know that chip  which goes on Arduino USB Host Shield and ADK boards? Yes, that's Max3421 from Maxim. And that other one which integrate some text based OSD boards? Hmmm... OK it is the Max7456 from Maxim too.

Well, from now on, Maxim will be there on our buddy gyros too.




Added by Sandro Benigno on July 23, 2011 at 7:01pm — No Comments

"El cuadricóptero" Project

Finally, I'm posting this project to share.


This is my Quadcopter, a project born because of a passion hobby and a thesis research excuse. :P



4 Outrunner Motors KD36-10XL of 810 [kv] and 24 [A] max.

4 ESC Turnigy Sentry 60 [A]

2 LiPoly Batt. Rhino…


Added by ToÑo on July 23, 2011 at 4:28pm — 12 Comments

Flight Mode Switching on a Futaba 9ZAP/ZHP

Hi All

This was a real head scratcher for me, so hopefully this will help others. I have had this radio for 4 years now but never used it as it was so complicated. I decided to RTFM which honestly just confused me the futaba manuals have never been to my liking. I read manuals for a living and compared to some of the rubbish ones this is definitely worse.

I tried all of the other methods listed for Futaba and couldn’t get them to work mostly because there is no "Switch…


Added by Alastair Seggie on July 23, 2011 at 2:00pm — 4 Comments

DIY/ Engineering Excitement over the past few months!

When I first got interested in UAVs I took the advice of some of the forum members here and equipped myself with arduino based systems....but I'm a crazy engineer and this approach didn't last long before I had convinced myself I could make a better job of all this if I started from scratch...luckily I also managed to…


Added by Henry Fletcher on July 23, 2011 at 1:00pm — 5 Comments

AutoQuad version 6.1

For those following this saga, version 6.1 of the AutoQuad board is complete and has passed initial testing.  I have taken the 5.0 design and added features that should make it more flexible and expandable while increasing performance.  Here is a summary of specifications:






Added by Bill Nesbitt on July 23, 2011 at 11:34am — 61 Comments

Microdrones 2.0 Blog

I have been blogging for some time on a tumblr blog called microdrones 2.0 .

Up until now I have been collecting articles and videos of advanced microdrones features.

Soon we will start to discuss what will be the next generation of microdrones, and what

features these next generation microdrones will include.

I opened this blog because for some time I feel that all the microdrone available…


Added by Itamar Weiss on July 23, 2011 at 8:27am — No Comments

Successful Maiden Flight of my Modular Testing Platform


The Modular Testing Platform 2 flies! It flies really well!


I had a great hand toss takeoff, a rough start as I figured out the control sensitivities and trim, some good cruise around time, and a perfect landing.


Any improvements you think I should make? Here is my planned list for the next episode:…


Added by Trent at MyGeekShow on July 23, 2011 at 4:02am — 8 Comments

Starting Out

My name is Michael and I am just starting to get into UAV's. I currently work as a human factors psychologist helping design a future user interface for Air Force UAV's (kinda how I got interested). I am a licensed pilot and also fly RC aircraft (when the Kansas wind isn't blowing 30 mph).

My goal in building a UAV is to have a fixed wing aircraft with fpv. I really just want to explore and learn more about this area.

I am about to purchase the Ardupilot Mega and a… Continue

Added by Michael Vincent on July 22, 2011 at 4:01pm — No Comments

FAA Reauthorization extension expires at midnite 7/22/2011

Transportation Secretary Ray LaHood Urges Swift Action by Congress on FAA Bill





Added by Duane Brocious on July 22, 2011 at 10:30am — 4 Comments

Better log analyzer for APM

I made a program that shows log data in visual way. I can see plane position, altitude, elevator, ailerons etc.

Here are some screenshots from program:

My plane made strange curves during flight. All curves are in the same places. After a very careful check I found an error in APM navigation code. It is now…


Added by Alpo Hassinen on July 22, 2011 at 3:48am — 12 Comments

Offer of help with tuning PID loops

Sorry, but I should have made clear that my autopilot design experience relates to fixed wing aircraft so I won't be able to help with rotary airframes.

I should also emphasise that the databse I have relates to PID control only. After a lot of hard work, I have established which stability derivatives the PID gains depend on so that the job for the user becomes one of estimating certain stability derivatives (for which formulae are also available). The PID gains then drop out as…


Added by George Tarrant on July 20, 2011 at 11:35pm — 4 Comments

3D Robotics
Plans for an open source RC Transmitter

Another one from Hack-a-day. It's just a concept so far, but the team…


Added by Chris Anderson on July 19, 2011 at 3:00pm — 29 Comments

3D Robotics
One huge quadcopter!

From Hack-a-day. This ducted-fan beast uses the Sparkfun 6DoF IMU that Jordi wrote the software for. No, it hasn't flown yet.



Added by Chris Anderson on July 19, 2011 at 1:44pm — 22 Comments

Carl Zeiss "Cinemizer" OLED Goggles for FPV Use

fpvmanuals posted a review on the prototype of the upcoming Cinemizer OLED video goggles by Carl Zeiss.  These goggles support full 1080p input sources via HDMI, 3D source display, are super comfortable, and display true black levels and vivid colors.  They offer a dramatic…


Added by Tim Nilson on July 19, 2011 at 9:58am — 8 Comments

Offer of help with tuning PID loops

I've noticed quite a lot of debate about tuning PID loops. I think I might be able to help since I've got 40 years experience designing autopilots for air vehicle flight control and navigation. I could give general advice on the best ways of using the P, I and D terms for both primary stability and navigation loops. With more info on the application aircraft I could probably come up with suggestions on which gains to use along with trial values

I think a combination of flight trials… Continue

Added by George Tarrant on July 19, 2011 at 4:49am — 20 Comments

First time at laying fingers on ARDU PILOT MEGA

the package I have been waiting for arrive today. No Idea on what to do. Plan to build Quad that can lift 4kg AUW. Then will move to Y6 setting. here's what I got from U-drones with latest code loaded+GPS+ful telemetry+only no airspeed.… Continue

Added by nubli hashim on July 18, 2011 at 8:52pm — 12 Comments

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