Subject:
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Handy board Expansion
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Tue, 4 Aug 1998 16:09:47 GMT
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Original-From:
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phillip chia <PHILCHIA@SINGNET.avoidspamCOM.SG>
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Viewed:
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635 times
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hi,
I have gone thru the Handy board expansion schmetic circuit version 3.0 by
Mr.Fred Martin whcih updated on the June 14,1998. I have some doubts :
1) What and where is the the Analog pass-through connector (J4) and Motor
power pass-through connector (J6) situated in the Handybd ?
2) This is an important and urgent issue .
From the expansion circuit, there are two 74HC374 (U1 & U4) used for
expansion. How and WHERE does the input lines from D0 to D7 to be
connected ? I find no space to be connected or tap-out from the handybd .
Can I do such a way that I insert the input lines of D0 to D7 of the two
74HC374
into the digital inputs from pin8 to pin15 (near the battery & power LED)
for connection?
3) How should I initialise with program of the output and input digital
and analog respectively ?
4) Can the expansion board expand further for digital inputs ?
Please help me to clarify the doubts. I need it urgently for my project.
Thank you.
rgds,
phillip chia
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