Subject:
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Re: Ultrasonic sensor interactions
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Newsgroups:
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lugnet.robotics
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Date:
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Wed, 24 May 2006 08:08:42 GMT
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Viewed:
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8012 times
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Hello John,
> I can also confirm that the 0x2, 0x40, 0xNN "set measurement interval" command
> does set the measurement interval to the specified value. Setting it to 0xff
> makes the clicking slow to about once every 2.5 seconds.
I have played with this command, it seems that only the low nibble of paramater
is useful. The interval range goes from 12.5ms for 0 to 3s for 0xf. Interval
seems to be roughly proportional to the square of the parameter. I have not seen
any behavior change for various high nibble values.
Here are my measured curves.
http://www.brickshelf.com/gallery/Philo/Misc/us_range.gif
The fastest 12.5ms sample rate is quite high, maybe I can make a US-sensor
version of the NXTway afterall...
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Message is in Reply To:
 | | Re: Ultrasonic sensor interactions
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| (...) I can confirm that the 0x2, 0x41, 0x0 "off" command does, indeed, turn off the clicking sound that you can hear coming from the US sensor. I can also confirm that the 0x2, 0x40, 0xNN "set measurement interval" command does set the measurement (...) (20 years ago, 22-May-06, to lugnet.robotics)
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