In article ,
Jamie Kahn Genet  wrote:
>The Natural Philosopher  wrote:
>
>> On 03/02/17 07:40, Stephan Elinghaus wrote:
>> > Hello to all,
>> >
>> > I'm looking for a small portable display which can be used in
>> > combination with almost any RPi (model B/B+/2/3).
>> > Most important: The display should be powered by its own battery (no
>> > external power source except for charging the battery) and it should be
>> > as small as possible. The resolution  can be quite low as long as a
>> > standard console font can be read, and the display does not need to
>> > have features like a touchscreen or something like that. The battery
>> > does not have to last for a long time either, one hour would be way
>> > enough. A straight-forward plug'n'play minimal display would be great..
>> >
>> > The main purpose will be to plug it in and get the console
>> > displayed (no graphical interface required, just simple shell
>> > environment), mostly on headless Raspberries for troubleshooting issues.
>> > I don't care about HDMI or the composite-AV-Port as long as the
>> > text output can be read.
>> >
>> > Does anyone have some hints for me?
>> >
>> find an old netbook or similar and i9nstall a basic linux on it and
>> network in to the pi.
>>
>> Honestly, it will be  cheaper than some kind of tiny hdmi or so on monitor
>
>Agreed. The OP is overthinking this. Any decent console app on a smart
>device or laptop will serve this purpose.

I will have to disagree. I have been a few decades in the field
with such systems (OK, they were physically a lot larger 30 years ago).

In around a third of cases you need good, old console access.
The PIs are not the exception here.

For the PI this means a) a serial cable to the serial console
b) a USB keyboard/mouse combo and a portable HDMI screen.
I use the ones from hardkernel.com (click on displays on the left
hand side). I love the old vu8 (discontinued, replaced by vu8c).
I also use the small 3.3V console thingies from this site, but I
have to crimp new molex connectors on them.

I have a small 12V battery with a 12V/5V regulator for power to
the screen. A 6Ah battery lasts nearly two hours.

-- mrr

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