Subject:
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17 feet
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Sat, 26 Oct 1996 03:51:40 GMT
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Original-From:
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Randy Sargent <rsargent@newtonlabs*StopSpammers*.com>
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Viewed:
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1572 times
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Well, I haven't looked at the sonar routines, but my guess is that 17 feet
round trip at around 1ms / foot each way is close to 32.768 ms, which is
when the 16 bit timer in the 6811 overflows (the 6811 clocks the 16-bit
counter at 2 Mhz).
One idea is to measure the number of milliseconds that have passed to the
nearest multiple of 32.768 ms, and add that to the reading.
-- Randy
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