All Blog Posts (10,223)

sustained rotations : pushing the envelope

This is an update of a previous post, with a link to a report that I promised that I would write. The above plot shows the results of the automatic calibration of the Z axis gyro during tests of methods to improve the performance of attitude… Continue

Added by William Premerlani on June 19, 2011 at 3:50am — 22 Comments


Note that Marcy vision is our quadrotor's fuselage with a board from an

abandoned ground rover, complete with H bridges, servo headers, & a

900Mhz radio.


So the Logitec C510 has fixed exposure.  Search through the kernel for

V4L2_CID_EXPOSURE_AUTO.  Unfortunately, there's no way to…


Added by Jack Crossfire on June 18, 2011 at 9:24pm — 1 Comment

3D Robotics
AR.Drone used to inspect damaged Christchurch cathedral

From News 3 in New Zealand, news that engineers are using a Parrot AR.Drone to inspect the inside of the Christchurch cathedral damaged in the earthquake:…


Added by Chris Anderson on June 18, 2011 at 10:07am — 4 Comments

Fiberglass MQ-9 Reaper with 2.5m wingspan

This model is big! 2500mm is impressive by any standard, yet the model is very practical, for instance the highly efficient balsa wing is removable for transportation. This model is highly unusual being both a scale model and a purpose built FPV/Camera platform. The Reaper UAV is a development of the Predator and represents the latest in cutting edge military technology, it is also…


Added by CrashingDutchman on June 18, 2011 at 1:58am — 31 Comments

3D Robotics
Cool amateur UAV effort to film the last Shuttle launch from high altitude

An amateur/educational group called Quest For Stars plans to lift a glider to the edge of space with a balloon to film the last Space Shuttle launch. In future flights, the glider will be then released and navigate home, broadcasting FPV video the whole way.…


Added by Chris Anderson on June 17, 2011 at 4:00pm — 5 Comments

3D Robotics
APM Mission Planner now has voice and datalogging!

Another day, another spectacular upgrade of the APM Mission Planner by Michael Oborne. Today's cool new features in v1.09 includes datalogging, so you can record your missions from the ground and replay them for analysis afterwards. No need…


Added by Chris Anderson on June 17, 2011 at 9:34am — 33 Comments

A simple INS - the beginnings

I'm building my own inertial navigation system --- one that isn't super complex, doesn't involve fancy filters, yet will provide plenty of accuracy. It's all about purposeful building... designing and building for what it WILL do, not what it MIGHT or could possibly be able to do.





Added by Jesse on June 16, 2011 at 11:28pm — 5 Comments

3D Robotics
Telemetry kit back in stock

The DIY Drones telemetry kit, which proved more popular than we were ready for and quickly went out of stock when we released it back in April, is now…


Added by Chris Anderson on June 16, 2011 at 1:30pm — 29 Comments

UAV with Chumby Hacker Board – Quadstruction

It’s been awhile since my last build log post, but I’ve covered a large milestone. See my previous posts:


UAV with Chumby Hacker Board – Configuring a CHB…


Added by Ethan Ferrell on June 15, 2011 at 5:00pm — 7 Comments

EasyCAP Gem or Crap

I have several of these, all shipped free in two or three weeks from DealExtreame


EasyCAP Model DC60 (DE# 8005707, SKU 5707) $8.60 black case, Windows ONLY. Has worked great for 2 yrs+

Device Manager reports "STK1150". CD has License Key for Ulead VideoStudio 10 and drivers install…


Added by Mark Colwell on June 15, 2011 at 3:49pm — 9 Comments

[SOLVED] XBee 868 MHz two ways communication

One of the things not clearly said in the Wiki is that when you set Xbee communication, you MUST define correctly the addresses of the modules, otherwise you'll not get right communication.

After, 8 hours of chatting, writing post forum and headache, I noticed this fact when I tried a range test of Xbee by using X-CTU tool by Digi. One module was in loopback (just connect the DDI to DDO on the planeboard of the Xbee, and, obviously, connect the 5V), and the other one was connected to the… Continue

Added by giu on June 15, 2011 at 3:30pm — 9 Comments

3D Robotics
AUVSI Student UAS competitition going on now--any reports?

It's going on now through the weekend in Lexington Park, Maryland. The website is pretty uninformative, with no list of teams entering. Anybody know more or is there and can share some… Continue

Added by Chris Anderson on June 15, 2011 at 1:07pm — 9 Comments

In development...

I have not posted up anything in a month so thought I should give an overview of what I've designed. Unfortunately I have hit a LARGE snag in that BatchPCB is basically broken for international orders as no shipping options appear and so you cannot buy anything (its been like this since January). 5 months of waiting to produce…


Added by Ritchie on June 15, 2011 at 7:00am — 19 Comments

FeiYu Tech FY-21AP with or without AP117 (OSD)

The FY21AP is a stand-alone autopilot system with FY-AFSS algorithm, GPS receiver and barometric sensing equipment. It is fully upgradable with OSD, telemetric digital communication, Data Modem and Ground

Station Control (GCS).

The flexible layout makes this the most versatile autopilot system in the market, designed for beginners, UAV operators and professional RC aerial…


Added by CrashingDutchman on June 14, 2011 at 11:00pm — 11 Comments

Compacted ESC's

All in one (4)ESC's and PDB,  $89

Get all that messy wiring out of the way.…


Added by Russell B. Sutton on June 14, 2011 at 4:30pm — 15 Comments

3D Robotics
Q: What's the connection between UAV swarms and Starcraft?

A: They're both examples of "multi-agent AI scripting". MIT postdoc Frans Oliehoek has been developing some powerful methods for swarms of autonomous objects (software or hardware, like UAVs) to communicate with each other and distribute tasks by following simple policies. One of the simulations his colleagues have tested this on is the videogame Starcraft,  as shown in the demo above.



Added by Chris Anderson on June 14, 2011 at 12:59pm — 2 Comments

Replay XD1080

Maybe this camera I found on the web would interest fellow aerial photographers.


It apparently doesn't weigh more than 85g, can take up to 1080p and it looks like a easy camera to fit on a plane compared to a bit more bulky GoPro.



Added by Peter-Hans de Zwarte on June 14, 2011 at 12:30pm — 14 Comments

FeiYu Tech FY-90Q Quadcopter Flight Stabilization System.

The FY-90 Controller is purpose built for Quadcopter use.

The Attitude flight stabilization system (AFSS), which is the heart of the FY-90Q, is an integrated 3-axis gyroscope and 3-axis accelerometer. AFSS forms a comprehensive inertial based navigation platform that calculates 3D flight attitude using proprietary FeiYu Tech algorithms.

When in full balance mode, the…


Added by CrashingDutchman on June 14, 2011 at 11:19am — 2 Comments

Upgrading digital photocamera for aerial photography

I have a digital photocamera mounted on my plane for aerial photography. It's just a simple camera, Fujifilm A170, cheap and provides pretty good quality of photos for this price - about $70, nothing sophisticated. I liked everything but the servo is used to take a photo. I know, it's the simplest way to do aerial photos…


Added by Kirill on June 14, 2011 at 5:08am — 15 Comments

Autodesk enters hobby market with free 123D solid modeling tool


As someone who never really got the hang of sketchup, this looks interesting. Free solid modeling tool, billed as a stripped down version of Inventor and keeping feature such as assemblies, constraints and .STL export.

Downloading a copy now.

Added by ip9 on June 14, 2011 at 2:53am — 7 Comments

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