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Need help picking an IMU


#1

First of all, I can’t work other whether http://www.sparkfun.com/commerce/product_info.php?products_id=9268 is tilt compensated. Could someone confirm whether it is please? I’m trying to avoid worrying about that compensation algorithm myself.

PS: I’m really just after tilt compensated x,y axis. Its for an autonomous bout


#2

I think you’d have to handle that processing yourself because you’d need to combine data from the gyros and accelerometers. The 9DOF (http://www.sparkfun.com/commerce/product_info.php?products_id=9623) has a processor on-board that can handle some of those tasks for you, but I don’t think the firmware that ships on it does much except simple filtering and packaging the data to the UART.


#3

Sparkfun 9DoF Razor. Just go for it. Been very happy with it myself. Also, it’s compass is tilt compensated.


#4

Cheers will do. Just got some sponsorship so I aint that skint :slight_smile:

How is that compass chris, would you recommend it?


#5

You also might want to consider the Pololu CHR-6d and -6dm IMUs (top two products on this page): http://www.pololu.com/catalog/category/80 Check out Pololu’s videos of them in action. I don’t have either of these but they look promising.


#6

I don’t have any experiences with the HMC compasses, but the 9DoF works quite well.

@ Mooz, I think he wants a compass, which is something a 6DoF will not give him.


#7

Cheers chris, Im buying one now :slight_smile:

Any updates on that GPS?


#8

@ Chris et al, the “-6dm” includes a 3-axis compass with calibration. I guess the “m” means “Magnetometer.” The name is confusing and IMO they should have called it the “-9d” instead.


#9

Yeah, it will be here on Tues day. Not happy about that at all, but it’s the best SFE could do.


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