Subject:
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Re: your mail
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Mon, 31 Mar 1997 14:41:49 GMT
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Original-From:
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Jeffrey Strauss Morehead <morehead@STOPSPAMMERSece.utexas.edu>
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Viewed:
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1514 times
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On Sat, 29 Mar 1997, Phil wrote:
> Hello!
>
> I would like to know something: Does anyone know how the LCD screen on the
> Handyboard opreates? More specifically:
>
> 1) does it have 8 in ports (kinda like the opposite of a P.C.'s parallel port?)
> 2) does it have a strobe (or respond pin ) that blits back a pulse after you
> put 1 digit on the LCD?
>
> If it works like this, I know a really cool circuit that will do some really
> cool things for your robot!
>
>
The chip you are really interfacing with here is the HD44780 controller
on the back of the lcd. It has a character set and a register. You write
the register and the controller displays the appr. member from its char.
set. There is some initialization required for the display.
There is lots of stuff on the web. Search for lcds, hd44780, etc. Here are
some urls that might have all you need:
http://www.iaehv.nl/users/pouweha/lcd.htm
and a sharp compatible data sheet:
http://www.sharpmeg.com/datasheets/displays
select the lm16255 or 257
jm
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Message is in Reply To:
 | | (no subject)
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| Hello! I would like to know something: Does anyone know how the LCD screen on the Handyboard opreates? More specifically: 1) does it have 8 in ports (kinda like the opposite of a P.C.'s parallel port?) 2) does it have a strobe (or respond pin ) that (...) (27 years ago, 30-Mar-97, to lugnet.robotics.handyboard)
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