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Re: 3.5-6 inch TFT display with touch screen

From Don Y <this@isnotme.com>
Newsgroups comp.arch.embedded
Subject Re: 3.5-6 inch TFT display with touch screen
Date 2013-09-16 03:00 -0700
Organization Aioe.org NNTP Server
Message-ID <l16krp$una$1@speranza.aioe.org> (permalink)
References <l10v8d$4el$3@dont-email.me> <l1232a$le7$1@speranza.aioe.org> <462f7fce-33bb-45d9-98cb-46842368c1e2@googlegroups.com>

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On 9/16/2013 2:30 AM, pozzugno@gmail.com wrote:
> Il giorno sabato 14 settembre 2013 18:32:14 UTC+2, Don Y ha scritto:
>>>
>>> Do you have any suggestions?
>>
>> Tablets are the obvious choice.  If you won't be using the wireless
>> capabilities, you can find a few vendors who will have most of the
>> drivers available for you (assuming you are not willing to run
>> under the native OS).
>
> Could you give me some links of manufacturers of those kind
> of tablets?
> I can find Android tablet, but I don't want to give so much
> flexibility to my users, I'd like a "closed" interface (no app
> to install, no icons customization, ...)

If you have access to the source, you can "lock" the device
(disable upgrades).  You could also lock the device with
hardware hacks -- i.e., close off any interfaces that could
be used to install software, etc.

Kindle Fire's source is (was?) available:

<http://www.amazon.com/gp/help/customer/display.html?nodeId=200203720&tag=5336653508-20>

You can undoubtedly find others.  Usually, the biggest problem
is subsystems like "wireless" are only supported via a "BLOB"
(no real source available so you use it "as is" or not at all!).

>> Here (prototype quantities), I opted for some surplus PDAs to
>> fit that role (4" dia) with BT & WiFi to give me the connectivity
>> I needed (I wanted a handheld solution).
>
> Ok, I'll try to make some search in this direction, even if I
> don't need wireless connectivity.

In my case, I deliberately wanted device(s) that were reasonably
commonplace.  I.e., I could install a compatible "app" on a
smartphone instead of forcing people to buy <whatever> I
happened to use (or, worse yet, having to *manufacture*
something for them!)

You can always NOT use a feature!  :>

Good luck!
--don

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Thread

3.5-6 inch TFT display with touch screen pozz <pozzugno@gmail.com> - 2013-09-14 08:21 +0200
  Re: 3.5-6 inch TFT display with touch screen Glenn <glenn2233@gmail.com> - 2013-09-14 12:17 +0200
    Re: 3.5-6 inch TFT display with touch screen Mike Perkins <spam@spam.com> - 2013-09-14 12:26 +0100
      Re: 3.5-6 inch TFT display with touch screen edward.ming.lee@gmail.com - 2013-09-14 06:04 -0700
        Re: 3.5-6 inch TFT display with touch screen Mike Perkins <spam@spam.com> - 2013-09-14 14:14 +0100
          Re: 3.5-6 inch TFT display with touch screen edward.ming.lee@gmail.com - 2013-09-14 06:33 -0700
          Re: 3.5-6 inch TFT display with touch screen Andrew Smallshaw <andrews@sdf.lonestar.org> - 2013-09-14 21:22 +0000
            Re: 3.5-6 inch TFT display with touch screen Mike Perkins <spam@spam.com> - 2013-09-14 22:56 +0100
              Re: 3.5-6 inch TFT display with touch screen edward.ming.lee@gmail.com - 2013-09-14 21:43 -0700
        Re: 3.5-6 inch TFT display with touch screen Paul Rubin <no.email@nospam.invalid> - 2013-09-14 09:07 -0700
  Re: 3.5-6 inch TFT display with touch screen Tim Wescott <tim@seemywebsite.please> - 2013-09-14 09:55 -0500
  Re: 3.5-6 inch TFT display with touch screen Don Y <this@isnotme.com> - 2013-09-14 09:32 -0700
    Re: 3.5-6 inch TFT display with touch screen edward.ming.lee@gmail.com - 2013-09-14 11:15 -0700
      Re: 3.5-6 inch TFT display with touch screen Paul Rubin <no.email@nospam.invalid> - 2013-09-14 11:46 -0700
        Re: 3.5-6 inch TFT display with touch screen edward.ming.lee@gmail.com - 2013-09-14 11:51 -0700
          Re: 3.5-6 inch TFT display with touch screen pozzugno@gmail.com - 2013-09-16 02:33 -0700
            Re: 3.5-6 inch TFT display with touch screen edward.ming.lee@gmail.com - 2013-09-16 07:49 -0700
      Re: 3.5-6 inch TFT display with touch screen Don Y <this@isnotme.com> - 2013-09-14 12:45 -0700
    Re: 3.5-6 inch TFT display with touch screen pozzugno@gmail.com - 2013-09-16 02:30 -0700
      Re: 3.5-6 inch TFT display with touch screen Don Y <this@isnotme.com> - 2013-09-16 03:00 -0700

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