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 04:29:19 GMT
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Original-From:
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Scott Seaton - CMC Engineer <scott.seaton@aus.sunAVOIDSPAM.com>
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Viewed:
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3870 times
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Hi Fred
The "new" spec sound's great ! I'd also like to see a bit more digital I/O on
any expansion board, and the extra 8 CMOS outputs are just what I (we) need.
Thanks
Scott
> To: Chuck McManis <cmcmanis@freegate.net>
> Cc: "handyboard@media.mit.edu" <handyboard@media.mit.edu>, "'Fred G. • Martin'" <fredm@media.mit.edu>
> Subject: Re: expansion board schematic posted
> Date: Fri, 07 Feb 97 13:49:06 -0500
> From: "Fred G. Martin" <fredm@media.mit.edu>
> X-Mts: smtp
>
> It is largely a space issue, not only for chips but connectors.
>
> It definitely would be feasible to remove one of the analog muxes and
> substitute an output latch in its place.
>
> Then the specs would be 8 general purpose, 4 hi impedance, 4 LEGO
> analog ins, 2 powered dig outs, 4 servo outs, and 8 CMOS dig outs.
>
> Anyone else care to vote on this option?
>
> > If there was a way to build 24
> > digital-in/digital-out/analog-in/analog-out lines (where they could be
> > pro grammed by setting a register) that would be so fantastic as to
> > make one's robotic he art weep with joy.
>
> Chuck, can you suggest the appropriate chip? Anyone?
>
> -Fred
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