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?

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This has a bearing on which one to buy and what you need to attach to it.
If you want to use it as a controller, e.g. build your own drone
autopilot or to manage cameras in a birdbox, a Pi Zero model 2 would do
the job and you'd connect it to a PC while writing or installing the
programs needed for the job.

OTOH, you may want a cheaper, lower powered laptop, in which case you'd
want at least a Pi 3B and some sort of integrated kayboard + touch screen
like these:

https://www.makeuseof.com/tag/raspberry-pi-laptop/

Other people attach a good-quality DAC, connect its audio output to a
good stereo system and install something like the Logitech Media Server
on the Pi, fit a good-sized SDS card or SSD and use it as their music
source.

I am a software developer, have used Linux for over 20 years and design
and write applications, mainly in C and Java, and have a couple of
personal projects in mind:

1) use a Pi 2 with a touch screen and a GPS receiver fitted, run Lk8000
on it, and use this as the main navigation system in my glider.
I'm a cross-country glider pilot when weather permits.

2) Use a Pi Zero as the control box for a multifunction timer built round
a PICAXE M8 microchip. The timer would drive servos to control scale
and/or competition free flight model aircraft. I also build and fly
these.

So, what do *you* want use an RPi for and what is your computing
background, if any?

Knowing this sort of stuff stuff will help us give you more useful advice.


--
Martin    | martin at
Gregorie  | gregorie dot org

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