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Re: Re: [Project] Kbd/LCD device


  • To: <ukha_d@xxxxxxx>
  • Subject: Re: Re: [Project] Kbd/LCD device
  • From: "James Hoye" <james.hoye@xxxxxxx>
  • Date: Tue, 29 May 2001 22:19:50 +0100
  • Delivered-to: rich@xxxxxxx
  • Delivered-to: mailing list ukha_d@xxxxxxx
  • Mailing-list: list ukha_d@xxxxxxx; contact ukha_d-owner@xxxxxxx
  • References: <9f04ib+q2m5@xxxxxxx>
  • Reply-to: ukha_d@xxxxxxx

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> If we are going to have push button inputs, aligning them parallel to
> screen edge will also give the option of a "soft key" style
UI,
> without compromising cursor-style navigation.

This gets my vote.  Only really useful on a 4 line display.  Does anyone
have an idea of how cheap LCD displays can be in quantity?  RS have prices
from as little as a 5.94 for a 16x1 TN alphanumeric reflective display to
30
quid-ish for a 20x4 STN backlit in single quantities.

Perhaps we should start low and cheap with a 16x1 'dumb' display.  This
could be used to display simple status data such as temperature, date/time.
Once we have this working over Ethernet & TCP/IP (if that's the way we
decide to go), it should give us confidence to tackle a more ambitious
version with buttons/feedback (and proof that our architecture/design
actually holds water).

Matrix-Orbital http://www.matrix-orbital.com (US
based) have a good range as
well as Crystal-Fontz http://www.crystalfontz.com (again
US).

Any opinions on which variants we should be looking at (ie. TN, STN......)?

James H




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