All Blog Posts (10,413)

FrSky TFR4 FASST Compatible RX w/ PPM OUT

Wanted to give you guys a heads up on this RX I have been waiting for for quite some time.  The FrSky TFR4 - w/ normal servo connections it is a 4ch RX, but when set up as a PPM out RX you get 8ch out via PPM along w/ RSSI, and it is very small.  Perfect for use wherever a PPM RX is needed.



Added by Bob Hern on September 5, 2011 at 1:52pm — 2 Comments

New Micro FPV Kopter

The New FPV  APM  Kopter

In the foreground, the bumblebee

in the background the  Kamkop  with the GoPro 3D system



Added by Peter Koppendorfer on September 5, 2011 at 12:27pm — 23 Comments

ThermoPilot project: a Thermal Hunter Glider drone

ThermoPilot, a Thermal Hunter Glider Drone

This project has been started in october 2010 and its purpose is to build a full autonomous Thermal Hunter Glider which is able to fly for a long duration in an area defined by a radius, a ceiling and a minimal altitude. The glider uses thermal soaring and dynamic soaring methods commonly used by full scale gliders during cross country soaring competitions.

During a full…


Added by Jean-Louis Naudin on September 5, 2011 at 9:58am — 22 Comments

Free Stanford Computer Science Classes


This fall, Stanford University offers free Computer Science classes! This time the available classes  are Machine LearningIntroduction to Artificial Intelligence and Introduction to…


Added by Serge on September 5, 2011 at 7:26am — 1 Comment

Mini Quad Rotor Flying on APM Code

Today, my nine-year-old daughter and I upgraded our little mini quad (7" across), which we hadn't flown in a while.

Here's what we did:


1. Soldered the headers onto a new ArduPilot Mega 2560 board and installed it into the quad. (Replacing the 1280 that was there).

2. In the past we…


Added by Robert Beatty on September 4, 2011 at 2:30pm — 29 Comments

Arducopter 2.0.40 preview


Just got back from testing the latest version. I'm having great luck with it.


Improved alt hold: Look for about twice the accuracy for altitude hold than the previous 2.0.40 preview. It's really good and the motors don't pulse as hard as they did before.


Loiter looks great and has the wind…


Added by Jason Short on September 4, 2011 at 12:00pm — 114 Comments

Tricopter music video & flight clips

A new teaser video featuring the about to be released Pro Tricopter Delrin Kit. More info available at

Added by Tim Nilson on September 4, 2011 at 8:09am — 4 Comments

Test Sonar wiring Shield Perfect No Noise

Today I'm test sonar my Arducopter in ALT Hold Mode. I use USB HUD cable (Have Shield) connect to Pitot port IMU and receive signal from AN (pin 3) the Sonar. It perfect not noise in test.

Now, I use code ArduCopter2.0.39b 

Wiring shield to ground at Sonar.




Added by Balloon on September 4, 2011 at 3:30am — 8 Comments

Acrylic Frame maiden flight

So this is the first flight on my second DIY frame. this one is entirely made from acrylic. It worked fine right off the bat. I did notice at about 28 seconds in it did a little seesaw and then stabilized fine. It worked really well until the second forth flight i was about 2 feet off the ground, just in a hover and it decided to flip upside down…


Added by Brian Boyle on September 3, 2011 at 5:00pm — 3 Comments

ACM Loiter (GPS) Hold Traditional Helicopter



Firstly thanks to Jason for his New Alpha code. 2.0.40. Randy for all the help and Martin who keeps supplying tea

The new control laws that he has implemented work really well. The oscillations have virtually disappeared in stabilise, and Loiter held for over 8 mins with only very slow drift, had to bring the heli back to the start point…


Added by malcolm churn on September 3, 2011 at 4:08pm — 6 Comments

3D position estimation with a Wii-Remote camera



In this video, I am using a UMI, a sonar for altitude, and a wii-remote camera. The wii-remote camera is a very small camera that is included in the wii-remote.

The wii-remote camera gives directly the 2D coordinates of the IR spots in the image. It's interface is I2C. This is really a great sensor!


On my UAV, the wii-remote camera looks under.


I put IR LEDs on the floor.…


Added by Leon on September 3, 2011 at 12:14pm — 16 Comments

Landing gear for Easy Star / Hobbyking Bixler / Sky Surfer and other EZ Clones

Hi all, first post after mulling around reading everything on the site and then some.  I have 2 Hobbyking Bixlers (well, 1 bixler, and 1 Sky Surfer from, they are the same and sold also on other sites).   After reading into it, getting it, flying it a bit, and…


Added by apocolipse on September 3, 2011 at 2:00am — 1 Comment

3D Robotics
APM configuration file for the HobbyKing Bixler posted

I spend a gorgeous morning at the field with Jason Short testing code and tuning PIDs. He was focusing on ArduCopter 2.0.40 and I was just dialing in the PIDs for the HobbyKing Bixler, which is our current…


Added by Chris Anderson on September 2, 2011 at 9:30pm — 13 Comments

An official UAV airport in Wales

In rural Wales, a runway and a 500-square mile airspace for unmanned craft is opening. The British Army's Watchkeeper WK450, pictured above, will use the runway for test flights.

The Welsh government wants to attract aviation firms to test experimental drones to fight fires and count whales.…


Added by Helldesk on September 2, 2011 at 10:30am — 7 Comments

Turnigy 9X IN STOCK at the US Warehouse!!

Turnigy 9X IN STOCK at the US Warehouse!! for $64.75!!!

thought I would pass this along

Added by Bob Hern on September 1, 2011 at 10:33pm — 11 Comments

Arducopter 2.0.40 preview

I've been away on vacation for the last week and a half, but I was able to port Arducopter to Flash and do some simulations. This has helped me rewrite the navigation control laws, simple mode, and Loiter to all use a streamlined set of control loops. This not only has saved code space, but the end result is a quad that flies…


Added by Jason Short on September 1, 2011 at 6:30pm — 44 Comments

Arduino ROV Sub

Nice Arduino submarine posting/build summary from IEEE…


Added by Shannon Morrisey on September 1, 2011 at 5:15pm — 7 Comments

ArduCopter 3DR Shipping Today

Today we're making the first shipment of ArduCopter 3DR quads. When you receive your quad, check the product page for build instructions - I'll be adding it today. And don't be confused that you have a few too many…


Added by Jeff Taylor on September 1, 2011 at 3:28pm — 14 Comments

Homemade Lifesize Chinese "Octocopter"

Added by Gian Carlo M. on September 1, 2011 at 9:05am — 35 Comments

DIY Go Pro Flat Lens - updated underwater result

Go pro is very popular among the FPV pilot or UAVS builder, but not everyone like the fish eye extreme wide lense. Some people choose to buy an extra housing while other replace the…


Added by oejang aja on September 1, 2011 at 5:30am — 14 Comments

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