Subject:
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Re: expansion board schematic posted
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Mon, 10 Feb 1997 23:35:39 GMT
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Original-From:
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MAR ERICSON <MAR@COOPERnospam.EDU>
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Viewed:
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1572 times
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I vote for the 100mA 5V switch. Digital Outs seem to be quite the disired feature here amoung many.
This 100mA capability also provides more options for people to use these signals.
It's better than just the CMOS signal, since it can double as that signal and a current source.
The 9V would eliminate the digital out feature and otherwise can be simulated with an additional transitor if needed as with the other digital outs in the HB.
> Hi all,
>
> I have put on the web site a schematic drawing of the expansion board
> as it currently stands.
>
> I would appreciate any comments regarding the feature set. In
> particular, I'm not sure what's best to do with the two digital
> outputs:
>
> * just provide the raw CMOS signal
> * drive an NPN transistor to give a 100 mA 5v switched power
> * use a pair of transistors per output to give 1A, 9v switched power
>
> any suggestions are welcome.
>
> -Fred
>
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Message is in Reply To:
 | | expansion board schematic posted
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| Hi all, I have put on the web site a schematic drawing of the expansion board as it currently stands. I would appreciate any comments regarding the feature set. In particular, I'm not sure what's best to do with the two digital outputs: * just (...) (28 years ago, 7-Feb-97, to lugnet.robotics.handyboard)
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