Subject:
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Re: light sensor problem?
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Newsgroups:
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lugnet.robotics.rcx.legos
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Date:
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Fri, 21 Jul 2000 06:29:43 GMT
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Viewed:
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1392 times
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Luis Villa <liv@duke.edu> wrote:
> Ok, so i'm supposed to be the guru, but I don't get it: all my light
> sensors are currently showing a range of adjusted values between 60-310,
> instead of the 20-110 that I'm used to seeing. The sensor is in active
> mode (passive mode still shows roughly 220-280, as usual) so I'm sort of
> at a loss as to why I'm not showing the value I'm used to. Anyone? Anyone?
> Luis
In active mode, the value you read from the light sensor depends on how you
power the sensor and read the A/D converters. In particular, the delay
from the time you turn off the power to the sensor to the time you do A/D
conversion matters. Has somebody changed the sensor charge or A/D
conversion code, or is there any reason to think the conversion time has
changed?
I don't know how LegOS does A/D conversion anymore. It used to charge and
read the sensors in a strange way, and I forget if all the sensors were
treated the same or not. Do the readings change if you move the sensor
from port to port?
-Kekoa
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Message has 1 Reply:
 | | Re: light sensor problem?
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| (...) It has changed from 0.1.x- Markus (who seems to have just about disappeared off the face of the planet) re-wrote a lot of that. On the other hand, in the actual ds_handler function not much has changed: the only thing that is apparent is that (...) (24 years ago, 23-Jul-00, to lugnet.robotics.rcx.legos)
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Message is in Reply To:
| | light sensor problem?
|
| Ok, so i'm supposed to be the guru, but I don't get it: all my light sensors are currently showing a range of adjusted values between 60-310, instead of the 20-110 that I'm used to seeing. The sensor is in active mode (passive mode still shows (...) (24 years ago, 21-Jul-00, to lugnet.robotics.rcx.legos)
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