Subject:
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status of the expansion board
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Thu, 11 Jul 1996 00:18:06 GMT
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Original-From:
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Fred G. Martin <fredm@SPAMLESSmedia.mit.edu>
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Viewed:
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1758 times
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Hi all,
Many people are asking about the Expansion Board. It has been on the
"back burner" because my publisher is demanding text, not technology.
But I do plan to release another rev this summer. My ideas about what
should go on it have evolved, due to feedback from many of you,
licensing concerns, and other issues.
Right now, this is the planned feature set:
* 4 LEGO sensor inputs (shaft encoder & reflectance sensor)
* 4 high-impedance sensor inputs
* 8 or 16 additional analog inputs
* 4 servo motor outputs
* 2 or 3 high-current digital outputs (for relays, LEDs, etc.)
* Polaroid ranging sensor connector & support circuitry
* prototyping area
The main changes from the design published on the web site are the
removal of the PIC circuit (takes up too much room; people can still
connect PICs as they wish to an HB with just a few wires) and the
addition of LEGO sensor circuitry (LEGO agreed to allow me to
officially support their sensors!) and digital outputs (most requested
feature).
I am not promising a release date on this b/c writing is the #1
priority, but as I have said, I expect it will happen this summer.
Public/private comments welcome.
-Fred
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Message has 2 Replies:
 | | Re: status of the expansion board
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| I'm curious as to how the Polaroid sonar and servo circuits will work. Will they simply steal timer lines from the HB's digital headers, or do you have something more complex worked out? For example, will the sonar's ECHO signal still go to a (...) (28 years ago, 11-Jul-96, to lugnet.robotics.handyboard)
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