Gender
Male
About
About Me:
Beginning quadrotor enthusiast
Please tell us a bit about your UAV interest
vision based indoor quadrotor attitude stabilisation
Activity Feed
I'd like to simulate a jDrones AC2830-358 motor using Simulink. I'm guessing, it's characteristics wouldn't be too different of many other engines with similar KV ratio, power and size. In DriveCalculator's database I found EMP2836/09 (880KV), which…
Is it possible to calculate propeller drag coefficient from thrust coefficient? Are they related in any way?I have calculated propeller thrust coefficient by simple approximation using DriveCalculator. I then made some curves in Excel and would like…
"Hi Ethan, what material did you choose to cut those for yourself? I've been planning to have them cut for me but don't know which material would be best (apart from carbon fiber, which is expensive)."
"All I did since now was trying to understand better what is one really measuring while "leaking" an integral. Naturally, the leaking process is more or less equal to high-pass filtering, which is more or less the opposite to integrating... That's…"
"I made another analysis, trying to avoid anything from causing sonar reading distortions (like keeping my sleeves out of the way) and, more importantly, adding sonar dirty-derivative to show the negative phase shift induced by high-pass filtering…"
"I researched the leaky-integrator a little further and this is what I found. I measured accelerometer velocity estimate for 3 different leak rates (0,1; 0,01; 0,001) and recorded them against sonar provided altitudes. Acc vertical velocities are…"
"Hi Patrick,
sorry to reply so late, have you already solved your problem? I think I could help, I've been using ROSSerial with APM since it's available (also used avr_bridge before). What exactly is does the compiler say?"
sorry to reply so late, have you already solved your problem? I think I could help, I've been using ROSSerial with APM since it's available (also used avr_bridge before). What exactly is does the compiler say?"
Hi,in case no one signalized this yet here and Jani or other AC makers wouldn't know: many people seem to be having problems with the ESC to motor connectors supplied with the jDrones ArduCopter Kit (checj here or here). I crashed my AC about 4…
"@Pbreed: actually I think, for non-programmers tuning parameters with Mission Planner should be good enough. Those variables are then stored in a non-volatile memory from which all variables are populated in runtime. For developers changing the code…"
"There doesn't seem to be any documentation to mavlink on the ROS Wiki: http://www.ros.org/wiki/mavlink-ros-pkg, so I'd ask this on answers.ros.org. The other thing one could do is look for packages depending on mavling-ros-pkg among other ROS…"
Hi,I already spent many hours searching through the web, so I decided to ask. Does anyone know where (apart from jDrones shop) can I buy 12x12mm 0,5mm thick alu profiles?Regards,Tom
"Hi, did you solder the wires together? Did it help?
I myself experienced 5 crashes like this, firstly thinking it's me doing something wrong or the propellers getting loose. But now I know it's the hardware or software (ie. some-ware :) ) failing.…"
I myself experienced 5 crashes like this, firstly thinking it's me doing something wrong or the propellers getting loose. But now I know it's the hardware or software (ie. some-ware :) ) failing.…"
"Thanks for your work and sharing it with others Caleb. BYU's paper's style is always nice to read."
"A very practical application of what's normally causing frustration in near hover accelerometer use :)."
"Maybe you can find some useful information in this post."
Hi,I'd like to use ArduCopter with ROS, so I wanted to ask you guys if anyone else would be insterested as well. I've already successfully tested ROS on a BeagleBoard-xM with a Kinect sensor. BB-xM was able to process QQVGA pointclouds @15Hz, which…
