Main Site Documentation

Imu


#1

Anybody know of a good IMU for ground based robot use? My price range is basically anything under $120 or around there. What do you guys think of the ArduPilot combo IMUs?


#2

After a bit more searching, I found this: http://www.sparkfun.com/commerce/product_info.php?products_id=9623

What do you guys think of it? It also seems to have a compass, which is something else I need.

Thanks!


#3

http://www.sparkfun.com/commerce/product_info.php?products_id=9510
I have one it works great. Its a 9dof.

http://store.diydrones.com/product_p/kt-arduimu-20.htm
I have one it works great. Its a 6dof.

Both are serial.


#4

Hi Bstag,

Ok, so the first one you linked is an older version of the one in my second post. the other one is one that I haven’t seen before, but it’s a bit less expensive. IF you had to choose one and price wasn’t an object, which one would it be? also, is the compass in the 9DF usable and tilt compesnated?


#5

well its a 3 axis version of the compass.
So the formula I posted in compass post would work. It does not have tilt compensation but can be calculated easily instead of handled internally on the device.

I would go for the Razor any time i can. I have had more experiance with it. They both use the same devices the ardu one has a gps plug in the razor has a battery plug in. they both can use the same source with some slight modification. If you were gonna go with gps i would use the ardupilot version.


#6

GPS is handled via a USB GPS mouse I have, so I guess I’ll go with this one? http://www.sparkfun.com/commerce/product_info.php?products_id=9623

Thanks!


#7

amke sure you go through this first. http://www.sparkfun.com/commerce/tutorial_info.php?tutorials_id=167&sipp=1&page=3 Its very informative.


#8

Yep, I already have. Thanks! I guess I’ll getting the Razor 9DF and some (more…) wiring. Thanks again!


#9

Chris,

I’d like to see that driver when you’re done. Sound like fun.


#10

Chris

http://code.google.com/p/sf9domahrs/

Good stuff for the razor.


#11

Yep, I just bought the Razor IMU:

[quote]ORDER SUMMARY:

Status Product Qty Total

Item in Box PRT-09385 Jumper Wires Premium 12" M/F Pack of 10 1 $4.50
Item in Box SEN-09623 9 Degrees of Freedom - Razor IMU - AHRS compatible 1 $124.95
Item in Box PRT-00553 Break Away Headers - Right Angle 1 $1.95

						Subtotal				  $131.40
						Shipping and Handling			+ $5.26
						-----------------------------------------------------
						Grand Total:				  $136.66

[/quote]

Noby ever said this crap would be cheap…


#12

wauw, chris

That board is on my wish list for some time now.
Please let us know how it is performing :smiley:

Greetings
Niels


#13

Yep, I will. I’m really interested to see how well it does, too. The only disturbing thing I noticed is that all the sensors appear to be “lower” quality. If you look at them, they are all $10-20 when there are other models going for $40. What makes those sensors so cheap?