Balancing robot using Memsic 2125 accelerometer

Kas

Hi,

I have built a balancing robot using Ping))) ultra sonic sensor, full details here:
http://forums.parallax.com/showthread.php?p=728541
The ping))) sensor works well, but has its own limitations

I started the same project, replacing the Ping))) with a Memsic 2125 accelerometer
The robot·gets very unstable, it seems that the Mensic is confused by the movement it generates
Please see: http://forums.parallax.com/showthread.php?p=684138

The way to go is combining accelererometer and gyro
Please let me know the gyro that would make the best combination with the Mensic
I would also appreciate a pointer to some code to start with.
I understand this project is not an easy task, as Kalman filter technology is implied

But are we really looking for easyness in this forum ??· ·
TIA
yves

Kas

OK

I found this informative thread: http://forums.parallax.com/showthread.php?p=696561
but it is based on Propeller chip whose language looks Chinese for me
Any basic stamp·experience with an accelerometer/gyro combo ??

Yves

Franklin

I'd take a look at Sparkfun's 5DOF accelerometer/gyro board for a combined solution. What does Memsic have for gyros?

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- Stephen

Kas

Memsic 2125 is a dual axis accelerometer only, no gyros included:
http://www.parallax.com/Store/Sensors/AccelerationTilt/tabid/172/CategoryID/47/List/0/Level/a/ProductID/93/Default.aspx?SortField=ProductName%2cProductName

You are right,·Sparkfun's 5DOF accelerometer/gyro board seems to perfect for the job
http://www.sparkfun.com/commerce/product_info.php?products_id=741
Thanks for this information

Any sample code for BS2 or BS2P ??

Yves