[ML-General] IMU units and GPS read

[Stephan Henning]

David,

If I can get off my butt and fix up one of my airframes, I might have
something you can use.

Got any specific projects in mind? Maybe we can collaborate on something
this summer.

-stephan

On Wed, Apr 22, 2015 at 7:38 PM, david <ainut at knology.net> wrote:

>  I just have to get by the shop and solder in the pins before I can play
> with them.  I have 4 other IMU's to tinker with but this is the first (too
> bad it had to be Bosch) that has the "sensor fusion" already built-in.
> What Bosch did was include an embedded uprocessor and developed their own
> code.  I cannot find out if they used Kalman filtering or not, or exactly
> which algorithm they selected.  I *greatly* enjoy not having to write that
> code and optimize it for an embedded box so if this works, I consider it
> money well spent.  However, Bosch does not have a great track record in
> that respect.  Plus, the more cpu load I can offload from the BBB, the
> better I like it. :)
> I'm also using the Adafruit "ultimate gps" board (MTK 3339) for the same
> environment.  Running tests now to determine the lowest processor overhead
> involved with just talking to the danged thing.  Read() a char at a time,
> or string at a time.  Which method uses the least overhead?  And worse,
> getting a line at a time doesn't know when to stop because the gps out uses
> Winblows CR/LF instead of the UNIX/Linux '\n.'  Using read() with fixed
> buffer size is reading PAST the end of line into the next line because of
> that.  Grrr.  Searching for problem resolution now.
> Minicom source has both methods in it's algorithm but I can't determine
> which is used in their runtime.  Their output from the serial GPS strings
> looks correct but I can't get my program to do that in canonical (get
> string mode) to do that.  Probably "programmer head space" error.
>
> This toy has applications in several areas, including drones and etc.
>
> I want a drone so bad...
>
> David Merchant
>
>
>
> On 04/22/15 19:22, James Fluhler wrote:
>
> I had not heard of these before look pretty cool I may have to pick up
> some! If you find some success with these maybe toss up a quick tutorial
> sometime!
>
> James F.
>
> On Apr 22, 2015, at 7:02 PM, david <ainut at knology.net> wrote:
>
>   Thanks, Matthew,   I downloaded that before I bought one to be sure it
> would work for my application.  Are you by chance playing with them, too?
>
> David
>
>
>
>
> On 04/22/15 18:08, matthew varian wrote:
>
> Here is the data sheet for it, it should get you up and going
>
> http://ae-bst.resource.bosch.com/media/products/dokumente/bno055/BST_BNO055_DS000_12~1.pdf
>
>  Good luck!
>
> On Wed, Apr 22, 2015 at 6:02 PM, david <ainut at knology.net> wrote:
>
>> Anyone playing with the Bosch BNO-055 units, with internal "sensor
>> fusion" already built-in?  I just received two of them and can't wait to
>> solder the pins so I can tinker!
>>
>> Any comments about the device?  They're a bit less than $35 for a Teensy
>> 3.1 compatible board.  I plan to use them with a Beaglebone Black.  They
>> are 3.3V units and use I2C.
>>
>> David Merchant
>>
>>
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