I connected the x4 amplified gyro outputs to the analog inputs of Ardupilot Mega. I'm checking the outputs on the serial monitor. In still position they indicate about 250 which is equivalent to about 1.2 volts, it should be ok. The problem is that when I move it, slowly or sharply, I get very little variations, e.g. the reading drops to 230 or goes up to 270. What am I doing wrong?
I have 6DOF razor with Arduino Duemilanove , i am using connection and DCM code provided here http://voidbot.net/razor-6dof.html
I am working with graphics in VC++ .I have a 3D rectangle drawn in my program.DCM code giving integer data of DCM. How to map that data to get exact rotations( i need to multiply DCM with Modelview matrix of OpenGL to get rotations). At present i can't be able to use that data correctly.
ARDUPILOT SENSOR BOARD - SIX DEGREES OF FREEDOM (MAIN)
The Arduino-compatible IMU is a project by Chris Anderson and Jordi Muñoz to create an AHRS (attitude heading reference system) for UAV control and general motion capture. This is the main board for the ArduPilot 6DOF. By itself, this board works as a 4DOF -- it produces three axes of acceleration and one axis of angular velocity data. This board can be connected to up to two ArduPilot 6DOF daughter boards which will each add one more axis of angular velocity information. The main board can be connected directly to the ArduPilot analog pins.
Assuming I had a good ADC converter, would the measurements out of of the sensors on this module be as good in quality (with the intent of making an AHRS system) as the ArduIMU ? I just want to compare the output of the sensors between the two.
Hi Ryan, high-pass filters on Razor filter do not amplify anything, as they are passive elements, but filter out any movements below 0.5HZ range. This is why its called high-pass filter.
Meaning, that if my aircraft is in constant turn (cirles around waypoint), then gyro itself will deliver constant output voltage, but Razor high-pass filter output will gradually drop after 2 sec until it indicates zero movement. And, if aircraft comes out of the turn and gyro output drops to indicate zero movement, then high-pass filter makes it look like 2-sec pulse in opposite direction.
So yes, these filters operate ok in dynamic environment like with game console, but with ap's we want to know about long-lasting (static) movements also.
I have the 4DOF version of this. Where is the best place to power it from a ArduPilot system? GPS adapter board? shield board? It needs clean 3.3v I think. (opps I ordered the shield without the 3.3v regulator)
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Hi everyone,
I connected the x4 amplified gyro outputs to the analog inputs of Ardupilot Mega. I'm checking the outputs on the serial monitor. In still position they indicate about 250 which is equivalent to about 1.2 volts, it should be ok. The problem is that when I move it, slowly or sharply, I get very little variations, e.g. the reading drops to 230 or goes up to 270. What am I doing wrong?
Cheers guys
I have 6DOF razor with Arduino Duemilanove , i am using connection and DCM code provided here http://voidbot.net/razor-6dof.html
I am working with graphics in VC++ .I have a 3D rectangle drawn in my program.DCM code giving integer data of DCM. How to map that data to get exact rotations( i need to multiply DCM with Modelview matrix of OpenGL to get rotations). At present i can't be able to use that data correctly.
Thanks in advance.
The Arduino-compatible IMU is a project by Chris Anderson and Jordi Muñoz to create an AHRS (attitude heading reference system) for UAV control and general motion capture. This is the main board for the ArduPilot 6DOF. By itself, this board works as a 4DOF -- it produces three axes of acceleration and one axis of angular velocity data. This board can be connected to up to two ArduPilot 6DOF daughter boards which will each add one more axis of angular velocity information. The main board can be connected directly to the ArduPilot analog pins.
Link Any one has this ?Meaning, that if my aircraft is in constant turn (cirles around waypoint), then gyro itself will deliver constant output voltage, but Razor high-pass filter output will gradually drop after 2 sec until it indicates zero movement. And, if aircraft comes out of the turn and gyro output drops to indicate zero movement, then high-pass filter makes it look like 2-sec pulse in opposite direction.
So yes, these filters operate ok in dynamic environment like with game console, but with ap's we want to know about long-lasting (static) movements also.
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