Comment by NorthSweden on September 22, 2009 at 1:26pm

Sweet.

Can´t wait to get one and then throw away the IR sensors.

Comment by Chris Lane on September 22, 2009 at 1:42pm

Hi! I'm new looking into all this stuff for my senior project. Is this pretty much a shield kit+ XYZ sensors put in one? Whats the difference? and what does IMU and AHRS mean? Thanks a lot! :D

Moderator Comment by Gary Mortimer on September 22, 2009 at 1:45pm

Well done

Comment by Krzysztof Bosak on September 22, 2009 at 2:01pm

IMU is a set of sensors: accelero and gyros, sometimes also magnetometers (Inertial Measurement Unit). AHRS Is Attitude/Heading Reference System, a set of IMU sensors capable of fusioning all sensor types and outputting the angles.
Aviation AHRS is an AHRS capable of maintaining its reference frame during flight, typically requiring external additional input data like airspeed.
IMU-capable autopilot is an autopilot with control loops adjusted for IMU operation, guaranteeing stabilisation that is not amplifying IMU artifacts in all possible flight phases.

Comment by dionh on September 22, 2009 at 2:20pm

How fast does the DCM run on the Arduino any specs

3D Robotics Comment by Jordi Muñoz on September 22, 2009 at 3:06pm

The internal refresh rate of the DCM is 50mhz, the output is configurable up to 50mhz too! But for that i will have to use a binary protocol.

Comment by Richard Green on September 22, 2009 at 3:07pm

This looks like a nice piece of kit. I have been looking at buying an reasonably priced autopilot far awhile now but the lack of z-sensors put me off. Will the board be distributed by any UK dealers like Cool Components (who supply the Ardupilot board?

I assume that the Ardupilot software will need to be re-written to take advantage of the new sensors

Admin Comment by Thomas J Coyle III on September 22, 2009 at 3:12pm

Chris,

Essentially you could remove the GPS from the Shield board, plug it into the ArduIMU, take the serial output of the ArduIMU and input it into the Ardupilot Rx input where the GPS used to go and remove the XY and Z sensors from the Shield board. Rewite the Ardupilot code to use the ArduIMU input to stabilize and guide the aircraft instead of the XY and Z sensors. This sounds like a description of the Ardupilot Mega.

Just a thought.

Regards,
TCIII

Comment by Peter Meister on September 22, 2009 at 3:16pm

Looks great, but I will await the ArduMega. I have no desire to move platforms until that ones comes out. Its great that we have an IMU - but 2 boards in the aircraft is a little much for my platforms.

@Bill P & Jordi.

Will there be a guide on integrating this IMU into the current Ardupilot and changing the code as TCIII says to get it to use the IMU over the shield and the XYZ sensors ?

3D Robotics Comment by Chris Anderson on September 22, 2009 at 3:19pm

Thomas,

Yes, that could be done, but we're focused on Ardupilot Mega, which will be designed from the ground up to use this. If the community wants to adapt the current Ardupilot code to use the IMU, that would be great, but it's not our priority at the moment.

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