"This is very sad what i found here:
http://www.multiwii.com/forum/viewtopic.php?f=8&t=649&start=1550#p28428
" I am very saddened to tell you that Fabio Varesano, the manufacturer of FreeImu died on Christmas Day.He was only 27 years of…"
Al Testani's Discussions
FreeIMU Firmware on ArduIMU
Started this discussion. Last reply by Crashpilot1000 Dec 29, 2012. 43 Replies 0 Likes
Is there a port of the FreeIMU firmware to the ArduIMU hardware? I have the ArduIMU board but would like to try FreeIMU code on it.Continue
Boat Auto-Steering at High Speed
Started this discussion. Last reply by Al Testani Sep 30, 2012. 2 Replies 0 Likes
I have an application where I wish to (eventually) auto-steer a competitive waterski boat in a straight line over approx. a 1200’ distance at up to 36mph (measurement/control duration is about 23…Continue
Al Testani's Page
Latest Activity
Fabio Varesano replied to Al Testani's discussion FreeIMU Firmware on ArduIMU"Each sensor chip has its own biases so, Al's calibration.h file won't be optimal for your sensors. So, you need to perform a calibration."
Dave Whittington replied to Al Testani's discussion FreeIMU Firmware on ArduIMU"Al,
Am I supposed to use that calibration.h you supplied and/or am I supposed to run the calibration application?
Thanks for the gyro fix.
Dave"
Al Testani replied to Al Testani's discussion FreeIMU Firmware on ArduIMU"On thing I do not see in the latest FreeIMU library is the fix for the too short delay in ZeroGyro as:
void FreeIMU::zeroGyro() { const int totSamples = 3; int raw[11]; float tmpOffsets[] = {0,0,0};//***************** ajt…"
Dave Whittington replied to Al Testani's discussion FreeIMU Firmware on ArduIMU"@Fabio,
Thanks much for all your effort - I downloaded as per the directly above link, moved the directories into libraries, changed the FreeIMU.h to select ONLY ArduIMU, and compiled - loaded the FreeIMU_yaw_pitch_roll…"
Fabio Varesano replied to Al Testani's discussion FreeIMU Firmware on ArduIMU"The FreeIMU library version 2012-11-22 add support for ArduIMU v3. Please use it instead of non official releases so that we are all using the same code base. The library can be downloaded…"
Al Testani replied to Al Testani's discussion FreeIMU Firmware on ArduIMU"If you download from the link in your post that will work except you need to add some minus signs to the magnetometer data passed to the AHRSUpdate method in FreeIMU.cpp for proper operation. I am traveling now and don't have the specific…"
Dave Whittington replied to Al Testani's discussion FreeIMU Firmware on ArduIMU"Al,
Did you get it to work OK for you fionally? Could you confirm the link for Arduino IDE download - is it :
http://dl.dropbox.com/u/15226597/libraries.zip
or
how to get the latest on the FreeIMU site - I run Arduino on Windows…"
Al Testani replied to Al Testani's discussion FreeIMU Firmware on ArduIMU"Yes. The Python discussion was only for the calibration software. If you download the calibration software you will get everything you need, i.e. Python, Numpy, etc.
You may want to have a look at Visual Micro for Arduino, a plug-in for…"
Dave Whittington replied to Al Testani's discussion FreeIMU Firmware on ArduIMU"Sorry to be asking simple questions, but do we still use the Arduino IDE with this code? I got lost with the discussion about Python since I don't have/use that. Where should we download a version that should work for ArduIMUv3 and the Arduino…"
Al Testani replied to Al Testani's discussion FreeIMU Firmware on ArduIMU"What is wrong here? I cannot get either the ArduIMU code or a 2 variations of the FreeIMU code to work satisfactorily.
Here are links to 3 videos as follows:
ArduIMU Code.swf = ArduIMU running the latest ArduIMU code but outputting…"
Crashpilot1000 replied to Al Testani's discussion FreeIMU Firmware on ArduIMU"Hi!
Due to my limited understanding of these things i can't really contribute to the discussion but i have something on my mind i want to post here because i think it is the right place to laugh about it :) . Gyros and accelerometers are…"
Al Testani replied to Al Testani's discussion FreeIMU Firmware on ArduIMU"Fabio,
Would you comment on tuning of the two gain factors twoKpDef and twoKiDef? My application requires the best yaw/heading performance I can achieve even at the expense of pitch and roll. I find if I zero out the above factors I see…"
Fabio Varesano replied to Al Testani's discussion FreeIMU Firmware on ArduIMU"I know Sebastian was thinking about using a audio turntable (you know for playing LPs) since they seem to provide good speed accuracy.. may be something interesting to hack. :-)"
Al Testani replied to Al Testani's discussion FreeIMU Firmware on ArduIMU"Thanks for the link. I have been gathering gyro error and calibration information and have drawn some initial conclusions to guide my work. A month ago I knew basically nothing about IMUs, etc. and I have been drinking from a fire hose…"
Fabio Varesano replied to Al Testani's discussion FreeIMU Firmware on ArduIMU"I don't have much experience in gyroscope calibration.. an initial work on temperature compensation was started on here: http://code.google.com/p/itg-3200driver/issues/detail?id=9
However, I wouldn't know what else to suggest.. You…"
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