This is a video of me loosing my plane into the sun and fog for almost 5 minutes. I was just testing my AP that i've been working on over the last month and a half and it was my first flight with working waypoints. I tuned everything way down, but it was working ok so I let it run loops around the T3 course. One… Continue
A routine mission to photograph NASA from our day job almost ended in tragedy as our XbeePRO 900's lost contact & the vehicle headed for a roof.
The XbeePRO 900's sucked from day 1. The problem seems to be they only do 50mW compared to the 90mW of the original XBee PRO 2.4Ghz. They also spread the signal more omnidirectionally, making for all around weaker reception.
900Mhz normally had 10% packet loss while… Continue
Flight test programs at Edwards Air Force Base and NASA’s Dryden Flight Research Center usually are off-limits to outsiders, but we got a peek at one of its coolest programs, the X-48B, when the Air Force recently threw open the gates for an open house.
Sigh....I am going to give Peter Hollands an award for finding the "juiciest bug" in the released waypoint firmware for the UAV DevBoard. The bug has been fixed, and the firmware has been re-released as version 1.8b.
The bug was in the yaw drift gyro compensation calculation. It would only show up for waypoint legs with a heading between 327 degrees and 360 degrees. The result was that the actual heading would slowly vary between…Continue
I was wondering if anyone had done any work on orbiting or managing turns? I prototyped an idea I had last night about orbiting waypoints and realized the same algorithm works for turn prediction.
On my autopilot I have running a drift compensation routine that maps the desired location of the plane onto a line connecting the old waypoint and the next waypoint. I simply look ahead 10% farther on that line and steer toward that point instead of the actual waypoint. This helps me… Continue
* IMU weighs less than 1.5 grams
* .8" x .7" footprint
* Customizable FIR digital filter
* TTL UART communication interface
* 16-bit ADC resolution
* +/- 400 deg/s gyro dynamic range
* +/- 3 g accelerometer dynamic range
"In the near future we will see unmanned aircraft systems (UAS) operating in the National Airspace System (NAS) seamlessly with manned aircraft in all classes of airspace. To achieve this airspace integration issues must be solved in a safe expeditious… Continue
We've wanted to be transparent with the community on our plans for ArduPilot Mega to get feedback, but I fear we've also introduced uncertainty and confusion. Here are some tips and pointers that may help you plan your ArduPilot path.
First, don't expect ArduPilot Mega until well into the new year. Second, it will be considerably more expensive than ArduPilot. Third, it won't necessarily work any better than the current ArduPilot for basic autopilot functions--it's just for people… Continue
I am writing to express my disbelief and disappointment that you have issued a cease and desist notice to Sparkfun in respect of their tradename. I am a customer of Sparkfun and have bought their products in relatively large numbers in recent time. I have never at anytime confused their products with yours and...
Out of interest I went to my search engine (Yahoo UK & Ireland) and searched for 'SPARC'. The first result was "SPARC - Strategic Promotion of Ageing… Continue
Hi all, hola Jordi!. I have made some test flights with a modified arduIMU code in stabilization assist mode with good results. Mi test platform is a small swift II wing (this is not an easy plane for an IMU...). See telemetry video
I have been working on an imu and AP code for some months. I have tested it and fly it and works well on normal conditions. When I… Continue