Replies to This Discussion

Permalink Reply by KM6VV on June 28, 2012 at 10:32am

Hi Thomas,

I have been reading and re-reading those very same papers!  I've also recently exchanged emails with David on his 6WD Jbot; which is the example from which I'm building my version of Robomagellan.

You might add to that list the UMBmark papers.  And the "where am I" papers.

I've started to look at the Turtlebot node example in ROS.  I think we need a node that will handle the ArduPilot Mega 2.0 board.

 

I'll wait a few (or more) weeks before ordering my board.  I will try my 9DOF IMU from Sparkfun.  Should keep me busy.  I'm still machining bearing mounts for the drive pulleys and timing belts.  And a few motor mounts to machine as well.

I did take it to the HBRobotics meeting last night, and my early chassis was well received.

 

Alan

 

 

Permalink Reply by Bot Thoughts on June 28, 2012 at 2:32pm

To add, here's a couple of my posts:

Wheel encoders: http://www.bot-thoughts.com/2011/03/avc-bot-wheel-encoders.html

Gyro calibration: http://www.bot-thoughts.com/2012/04/avc-precision-gyro-calibration-...

Here's a little about GPS lag and pose estimation: 

http://www.bot-thoughts.com/2012/05/avc-whats-wrong-with-data-bus.html

Sensor calibration, noise, error:

http://www.bot-thoughts.com/2011/12/magnetometers-and-motors.html
http://www.bot-thoughts.com/2012/03/magnetometer-calibration-machin...
http://www.bot-thoughts.com/2012/02/avc-is-compass-necessary.html 
http://www.bot-thoughts.com/2012/03/avc-is-3d-compass-necessary.html
http://www.bot-thoughts.com/2012/03/magnetometer-calibration-error.... 
http://www.bot-thoughts.com/2012/02/avc-encoders-quantization-error... 

Hope someone finds this of value.

AdminPermalink Reply by Thomas J Coyle III on June 28, 2012 at 5:31pm

Hi Bot_Thoughts,

Always open to additions!

Thanks,

TCIII