Subject:
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Re: rotation sensor thing solved
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Newsgroups:
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lugnet.robotics.rcx.legos
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Date:
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Thu, 27 Jul 2000 19:19:54 GMT
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Viewed:
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1713 times
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On Thu, 27 Jul 2000, Luis Villa wrote:
> OK, so I had forgotten that for whatever reason legOS rotation sensors are
> very, very sensitive to dying batteries. I think that when underpowered,
> they either don't generate an interrupt or the voltage on the interrupt is
> too weak and the signal gets missed. So, new batteries and voila...
> everything works fine. /me wipes brow :)
Actually, the sensors themselves don't generate an interrupt. The interrupt
to read the sensors is from a timer, and it just cycles through the
sensors waiting to read the next one. This may be related to the problem
Kekoa mentioned about legOS powering the active sensors less than the
official firmware.
John A. Tamplin LiveOnTheNet.COM, Inc.
jat@LiveOnTheNet.COM 2104 West Ferry Way
256/705-7007 - FAX 256/705-7100 Huntsville, AL 35801
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Message has 1 Reply:
 | | Re: rotation sensor thing solved
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| (...) Powering them more frequently but for a shorter time, you mean? Yes- I do see your point. This will be something to keep track of when/if we mess with the sensors in 0.2.x. BTW, in hindsight, this should have been obvious- the reason that the (...) (24 years ago, 27-Jul-00, to lugnet.robotics.rcx.legos)
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Message is in Reply To:
| | rotation sensor thing solved
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| OK, so I had forgotten that for whatever reason legOS rotation sensors are very, very sensitive to dying batteries. I think that when underpowered, they either don't generate an interrupt or the voltage on the interrupt is too weak and the signal (...) (24 years ago, 27-Jul-00, to lugnet.robotics.rcx.legos)
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