Subject:
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input impedance
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Wed, 10 Jun 1998 08:28:49 GMT
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Original-From:
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Joe Martin <joema@mpx!IHateSpam!.com.au>
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Viewed:
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2093 times
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Does anyone know the impedance onto the sensor inputs on the HB and/or any
suggestions for setting them to receive signals sent at 220K Ohm.
Joe Martin
joema@mpx.com.au
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Message has 1 Reply:
 | | Re: input impedance
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| (...) Hmmmmmm.. as I recall, there are 47k pullups on those inputs. These are used to condition the signals when used as a digital input. The 'HC11 pink book suggests that any input resistance of greater then 10K will "...degrade A/D accuracy." The (...) (27 years ago, 11-Jun-98, to lugnet.robotics.handyboard)
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