"As someone who developed an open-source Linux-based autopilot back in 2004-2005 (Albatross) I can assure you this isn't the first Linux-based autopilot..."

"The datasheet for the ASIC on your website suggests it should be possible to extract an expanded timebase "image" of the returned waveform. This could be useful for disambiguating between top of trees and the ground (in your example) for instance.…"

""But what's really exciting about the parallella is its epiphany 16-core or 64-core (there are two models) parallell arm processor."  
FYI, the Epiphany is not an ARM processor. The Parallella (I'm also a Kickstarter backer) has 2 ARM Cortex A9…"

"If you meet the length matching requirements (you'll find all the information you need from the DRAM vendors or Freescale), then great - it's hard to tell just from the renderings, but it's just surprising and rare not to see any serpentine traces…"

"Does the DDR SDRAM work? It doesn't look like you have any length matching on your PCB layout (nor does the USB diffpair appear to be routed to control differential impedance)..."

"Where does it say it has an ARM in the invensense chip? I can see it has a "DMP" which sounds like a microcontroller of some kind running the fusion algorithm, but afaict you'd still need a second microcontroller to run the autopilot code. "

"In this video: https://www.youtube.com/watch?v=4EGQZsu-kkk by John Stowers (www.johnstowers.co.nz) the processing is performed by an onboard Gumstix Overo. The Kinect is pointing down, and by fitting a 3D plane/surface to the point cloud data,…"

"Yes, it has a 3-axis magnetometer for the compass function. I can't recall if the API lets you get raw/uncorrected magnetic readings out - probably not."

"@jeffrey - if only that was true ;-) It remains one of the most locked down pieces of consumer electronics in history. Of course, jailbreaking and writing apps for iOS isn't so bad - you get to use their nice APIs, power management, comms, imaging…"

"I doubt the built-in accelerometers, gyros, and magnetometers are any different *at all* performance-wise from the ones we hobbyists use. iOS even has a built-in sensor fusion (Kalman filter) algorithm perfectly tuned to match the sensors. I…"

"@James re mag at cm, their target market is cellphones and game controllers - there is no motor, and the baseline they could acheive is only a few centimeters anyway. I fully expect an all-in-one eventually. We already have 3-acc+3-gyro and…"

"This isn't all-in-one, it needs an external magnetometer... but otherwise, it looks pretty awesome!"

"I've pushed my OpenGC master branch here: http://github.com/hugovincent/GlassCockpit
If you get in touch I'd be happy to restore Linux support and integrate your changes. Let me know."

"Oh and also Mac OS X support including full screen (native, no FLTK or Plib), substantial performance improvements in the navigation database code through caching (roughly 100x faster for some operations including startup). Also I've started on…"

"I think it would make more sense to merge the other way around. I did a lot more work on my OpenGC branch since you forked it, but have so far had it in a private repository. I've rewritten all the OpenGL code to support OpenGL ES (so it can work on…"

"Hi there! You may be interested in my latest OpenGC branch. I haven't yet published it yet, but will try to get it up on GitHub soon.
- Hugo Vincent, founder, Albatross Project :-)"