On 02/15/2020 10:57 AM, Martin Gregorie wrote:
> On Sat, 15 Feb 2020 10:24:10 -0600, Richard Owlett wrote:
>
>> On 02/15/2020 09:10 AM, Martin Gregorie wrote:
>>> On Fri, 14 Feb 2020 09:57:28 -0600, Richard Owlett wrote:
>>>
>>>> While searching for other info I was reminded about Raspberry Pi.
>>>> Problem is that https://www.raspberrypi.org/ over does glitz.
>>>> I need a text based matrix of cards vs features.
>>>> [Pointer either to appropriate page of or a U.S. vendor would be fine]
>>>> All relevant specs seem to be available as PDF. Just need to know
>>>> which one I want.
>>>>
>>>> My proposed system would be composed of:
>>>>      Least power hungry board with headers and one USB port installed.
>>>>      One touchscreen display.
>>>>      One battery.
>>>>      One case to hold it all.
>>>>
>>> Back to basics time:
>>>
>>> What do you want to use an RPi for?
>>>
>>>
>> The equivalent of a PDA of decades past using current production and
>> avoiding smartphones(sic) &/or Android. I was introduced to computers in
>> early 60 as an E.E. student. Though I don't have many C.S. credits, I
>> have done work related coding in 8080/8085 assembler and dBaseII (so I'm
>> dated ;) Most of my tech work was as engineering support or 3rd party
>> inspection. Once when working thru a temp-perm firm I got a interview
>> because the client just had meet someone who could document my strange
>> resume.
>>
>> I just found
>>     https://www.raspberrypi.org/products/compute-module-3/
>> and
>>     https://www.raspberrypi.org/products/compute-module-io-board-v3/
>>
>> Data sheet at
>> https://www.raspberrypi.org/documentation/hardware/computemodule/
> datasheets/rpi_DATA_CM_1p0.pdf
>>
>> Just brewed a mug of coffee. Time to drool over data sheet ;}!
>
> My second project isn't dissimilar to yours- its a replacement for a
> Medion PNA (i.e. built-in GPS, 3.5" touch screen, WinCE).  Both the
> Pimoroni 4" screen that A Dumas suggests and the Adafruit 3.5" screen
> would do my job, and probably yours too. The Pimoroni has much the best
> resolution (800 x 480) compared with the Adafruit (480 x 320).

It looks too small unless the accept touch of a stylus rather than a
finger. For one of my potential uses I was considering displaying a
pseudo-QWERTY layout for inputting alpha-numerics. Link to specs?


>
> All RaspberryPi use Repbian, a port of Debian Linux, by default though
> there are other OSen available.

That's one it's advantages. My laptops run Debian.

>
> I don't know how much Android has diverged since Linux was forked to
> create it or what command shell or desktop manager it uses.
>
>

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