Subject:
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Re: Vector2x SPI interrupt driven code
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Wed, 5 Mar 1997 19:35:11 GMT
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Original-From:
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Matt Harlan <mjh10@cornell.AVOIDSPAMedu>
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Viewed:
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2102 times
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Hey Tom
How close is too close? How far away do you have it? Any problems with
just pieces of metal, like casters or maybe a gel cel holder. (hint hint)
Sounds like a pretty nifty little device. Just wondering if my setup would
allow me to use it
>
> THe Vector2x like all compasses should be kept away motors and other
> magnetic fields, although it does have a calibration to get around
> some magnetic disturbances. Smaller robots probably can't use it,
> because it would be too close.
thanks
harlan
_______________________
Matthew J. Harlan
Cornell University
Electrical Engineering
mjh10@cornell.edu
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Message has 2 Replies:
 | | Re: Vector2x SPI interrupt driven code
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| (...) I had troubles with the V2X within 2 inches of some small hobby motors. Lotsa magnet there, but larger motors have more magnet. The calibration is supposed to adjust for "hard iron" disturbances, so just having it bolted to your robot with (...) (28 years ago, 5-Mar-97, to lugnet.robotics.handyboard)
| | | Re: Vector2x SPI interrupt driven code
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| (...) From my experience, the calibration is only needed if you need absolute heading data. Any non-moving metal in the immediate neighborhood will have a constant effect on the readings. I just care about maintaining the current heading (go (...) (28 years ago, 5-Mar-97, to lugnet.robotics.handyboard)
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Message is in Reply To:
| | Re: Vector2x SPI interrupt driven code
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| Not sure who you are? tomb? Anyways, I noticed mention of a compass.... I once looked into the idea of using a flux gate compass to obtain heading info. After finding that the inexpensive (affordable) models would only obtain info at a resolution of (...) (28 years ago, 5-Mar-97, to lugnet.robotics.handyboard)
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