August 2009 Blog Posts (83)

SLUGS AP: Fully Flight Tested and Open Source

So after endless hours in the lab I am happy to report success in all fronts of the autopilot and making the GIT repository publicly available. The project's website has been updated to reflect the new hardware version and all the changes in the software. New videos have… Continue

Added by SLUGS Team on August 31, 2009 at 12:22am — 14 Comments

3D Robotics
A Lego PicoPilot!

The most basic autopilot you can buy is the UNAV PicoPilot N, which is basically just a one-axis gyro and a GPS, with an old Pic processor inbetween. It's a "turn-rate leveler", which is to say that it keeps the wings level with the gyro and uses the GPS to correct… Continue

Added by Chris Anderson on August 30, 2009 at 10:00pm — 7 Comments

Replacing FMA with a 6DOF IMU


If I understand right, Ardupilot is dependent on FMA for roll and pitch stability.

I have 6DOF IMU from Sparkfun and I want to use it to monitor the roll, yaw and pitch angles of my model airplane and use this data to perform FMA functions i.e. maintain roll and pitch stability.

Sparksfun's 6DOF IMU gives accelerations and gyro data. On benchtop experiments, I can accurately measure my roll and pitch angles using only accelerometers. But, if the IMU flies in model… Continue

Added by Roberto Hawkowski on August 30, 2009 at 7:22am — 28 Comments

Ardupilot on a non-Easystar airplane

Many people are using Ardupilot on easystar airplane.
What other airplanes are being used with Ardupilot and how to adjust Ardupilot code for the athoer airplanes?

Added by Roberto Hawkowski on August 30, 2009 at 6:52am — 2 Comments

Ardupilot ordered! Now for the fun adapting this to a non-rc ROV!

Hi everyone, I'm new to the community though I have been keeping an eye on this project for several months with the hopes of integrating it with my ROV Project. Last week I finally ordered my initial load out of Ardupilot gear. For starters I'll explain my project and my goals.

My project is very different from anything I have seen using Ardupilot of course I could be wrong and if I am thats going to make my life easier :) My project is a PC Based Tread-Based ROV Chassis (more… Continue

Added by Aaron Buckner on August 29, 2009 at 7:57am — 4 Comments

Video: UAV in a Firefight of a Different Kind

Here's a video about the University of Alaska's operation of a Scan Eagle UAV I posted about earlier:

"Earlier this month in Alaska, a 40-pound Insitu Scan Eagle saw duty fighting wildfires after dense haze grounded conventional aircraft. The UAV is operated by the University of Alaska, which according to university officials is the… Continue

Added by Tim Trueman on August 28, 2009 at 6:24pm — 9 Comments

First try with ardu communicate

I am sorry for a late , but lastly I had really lot other problems so no time at all for any "flash" work .

However I made few lines of code to made possible communicate sending to OSD from any external devices , so from Ardupilot also - anyway that was the base reason . HappyKillmore already wrote about it - but here detailed descryption of message format .

So we can deliver information to display on OSD at location x,y looks like that :

[leading character][text… Continue

Added by remzibi on August 28, 2009 at 3:00pm — No Comments

How to change labview GCS Baudrate to 19200...

Hi all, i had to make little changes in program to get the data at 19200 baud rate...... so its all woking with wireless telemetry.. But the only problem is groundstation... how to change baud rate of ground station. Since its in labview so facing problem of changing its baud rate i have its source code also but cant get how to change.. ..or is there any software emulator to get data on 19200 and reproduce on other serial port at 57600 for GCS.. Suggestions please ..

Added by Vikram on August 28, 2009 at 6:15am — 11 Comments

High speed data logger


While flying my model UAV, I want to log sensors output and GPS to memory cards. Sparkfun offers two data logger products;

Breakout Board for DOSonCHIP FAT16 FAT32 uSD Module sku: BOB-08215

Logomatic v2 Serial SD Datalogger sku: WIG-08627

I want to ask if… Continue

Added by Roberto Hawkowski on August 28, 2009 at 5:36am — 7 Comments

Remzibi's OSD now shows ArduPilot data

Remzibi has released a new version of his firmware today. V1.60 includes an early version of his new messaging system that can be used for lots of other applications as well as ArduPilot.

Device Connection

For details on the interface and more info as it develops please take a look at this thread:…


Added by Paul Mather on August 27, 2009 at 9:30pm — 16 Comments

3D Robotics
ArduPilot sensor calibration FAQ

A number of you had sensor calibration questions, so I asked Jordi, to get the answers straight from the source:

1) Are the sensors calibrated only when the bind plug is on or also with every reset?

Only when you insert the bind plug, then it will be recorded in the eeprom. If you restart you don't have to calibrate again (in short periods of 15 mins, battery change for example).

2) Does the sensor calibration happen after GPS lock or… Continue

Added by Chris Anderson on August 27, 2009 at 9:30am — 5 Comments

LCROSS IMU failure -> fuel exhausted

LCROSS IMU malfunction

It just shows how even for the pros, something as basic as the IMU & AHRS can still ruin your day. You think it's just a matter of pimping a couple trillion dollars from the slaves, buying a super expensive AHRS to do something that's been done for 60 years & moving on to more important things like trajectory design. This is the stuff hobbyists struggle over, not… Continue

Added by Jack Crossfire on August 26, 2009 at 11:00am — 1 Comment

3D Robotics
Details of Sept 2 NASA Ames field trip

For those of you who signed up for the Sept 2 UAV field trip to NASA Ames and submitted your name before my comment marking the 12th person, here are the details.

1) You must PM me with your full name. You will be required… Continue

Added by Chris Anderson on August 25, 2009 at 10:00am — 1 Comment

Multi-channel RC servo signal to RS232 converter

Hello All,

There are many small, off-the-shelf boards which can accept TTL or RS232 serial data and control/drive multiple RC servo motor. What I am looking for is the reverse of this operations. That is, I want to measure multiple servo pulses with one small unit, and send the measured values via a TTL or RS232 port.

Do you know if there is any small, off-the-shelf solution for… Continue

Added by Roberto Hawkowski on August 25, 2009 at 2:24am — 15 Comments

Simdrone UAV flight simulator

A new short demo of Simdrone uav simulator, which is used both for UAV development and UAV operator training.

Simdrone… Continue

Added by H-SIM on August 24, 2009 at 1:00pm — No Comments

3D Robotics
Current standings in the T3 contest (just one week to go!)

Here are the latest standings (just top 10) for the T3 contest. Our judge, Gary Mortimer, has added flags to inspire national rivalries and inter-Nordic competition. Paparazzi and AttoPilot are showing the power of mature navigation… Continue

Added by Chris Anderson on August 24, 2009 at 9:05am — 3 Comments

Article on FAA Regulation of SUAS

This article may be of interest:

Unmanned Vehicles Magazine; August 2009 issue

The long road to integration

"The FAA is giving high priority to the development of a regulatory environment for small unmanned air systems..."

Read full article here (page 46):
Unmanned Vehicles

Added by Paul Marsh on August 20, 2009 at 3:13pm — 27 Comments

3D Robotics
NASA Ames UAV field trip! (Sept 2)

Chad Frost, the manager of the NASA Autonomous Systems and Robotics department, has kindly offered to give a dozen lucky DIY Drones members a tour of the UAV facilities at NASA Ames in Mountain View, CA. This is a… Continue

Added by Chris Anderson on August 19, 2009 at 8:00pm — 19 Comments

Official ArduPilot 2.3 Released

Finally, after many weeks trying to debug the NORTH-EAST issue we finally fix it. Thanks to everybody who help me out with this one.

The code is available for download here:…


Added by Jordi Muñoz on August 19, 2009 at 12:30pm — 61 Comments

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