As some people might know there is a team hard at work on OpenPilot and we are making some progress, like every complex project things don't go as fast as you like but progress is happening. One of the things we are working on now is the low level infrastructure for the AHRS, this makes it so our EKF developers can just drop their code in without messing with the low level side of things.
On of the issues we needed to resolve was filtering the inputs, we were a bit unsure on which way to go. I sent an email to Caleb from CHR to ask his advice, he not only helped a lot but also gave us permission to use parts of his gyro filtering code such as his FIR filter as long as we credited him. Naturally he will be credited in the code and the credit file but I wanted to say a public thank you for this as well.
What I love about OpenPilot is the community, this side was mentioned on the podcast where we announced the project. Caleb is a perfect example of this community spirit.
Additionally, I don't see the CHR-6dm AHRS mentioned much here, so if you are looking for a well priced, powerful AHRS with a complete EKF have a look at http://www.chrobotics.com/ - Caleb rocks :-)
A small update on OpenPilot as well. Things are moving along, we have our issue tracker running now which can be found at bugs.openpilot.org there are still tasks to be added as not everything being is done is in there yet but it will be. There is a burn down chart which shows how far away we are from the version 1.0 release and a list of outstanding tasks that we need help with if people want to get involved.