Re: LCD dimensions?

On Thu, 03 May 2007 23:29:01 +0200, martin griffith
<mart_in_medina@xxxxxxxx> wrote:

On Thu, 03 May 2007 16:12:54 -0500, in sci.electronics.design John
Fields <jfields@xxxxxxxxxxxxxxxxxxxxx> wrote:

On Thu, 03 May 2007 22:57:13 +0200, martin griffith
<mart_in_medina@xxxxxxxx> wrote:

Are there any standards for hole fixing, display area etc?

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No, but there _is_ a lot of competition, so pretty much everybody
makes what everybody else makes as far as the character display is
concerned.
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I just remember getting burnt a few years ago on a 2 line by 8, not
into the graphic ones , just the 1 and 2 liners.

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Yup. Sometimes the location of the I/O will be different, sometimes
it'll be a single row header instead of double row, etc., etc.

Getting the data ***, up front, with a dimensioned drawing will
prevent a lot of heartburn. :-)
You jest?

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Not at all.

The last time I did a project with an LCD I found all the electrical
and dimensional data on the web .
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Yeah, I know about the "dimensions", it took me hours to figure out
densitron displays, for the CNC mob.

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LOL, me too, although my CNC mob is _moi_ :-)

As I recall, Densitron's drawings (even though the data is all
there) require a lot of addition and subtraction to get to the
important stuff.
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Then there is the other problem, COTS plastic enclosures, they cut
out a nice little hole for a display, but never tell you which damn
display they sized it on, no mounting pillars either ! grr^2

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Yup. I lucked out unbelievably once, when I had a client who wanted
to drive a bunch of white LEDs (but varying numbers of them) from
the mains and I found an affordable wall-wart shell supplier who'd
sell me onesies, into which all the circuitry could be stuffed, for
less than an arm or a leg. About 5 bucks each, qty 10, as I recall.




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JF
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