On Mon, 6 Feb 2017 08:32:44 +0100, Stephan Elinghaus
 wrote:

>Am 2017-02-03 hat Stephan Elinghaus geschrieben:
>> I'm looking for a small portable display which can be used in
>> combination with almost any RPi (model B/B+/2/3).
>
>Thanks for all the answers. I think I'll give the car monitor a try,
>seems to be the best solution for my purposes.

A mate has a small battery powered monitor, bought from eBay that has
all sorts of inputs that I believe was 'designed' for CCTV field use?

I've used it with him both on CCTV (Composite) and a PC (VGA) and it
worked well for both. I *think* it also had an HDMI port.

If it didn't and you can find a battery powered PC (VGA) monitor, I
have used an HDMI to VGA dongle with no issue on my RPi's.

http://www.ugreen.com.cn/product-784-en.html

The only requirement is that it has to be powered on *before* you
power on (or boot possibly) the Pi but I think that's because it
(Linux?) defaults to the CV port otherwise (and may not switch back to
the HDMI dynamically). I think you can set it to the HDMI
(raspi-config?).

I just use a twin output USB PSU, one uUSB lead straight to the dongle
and another uUSB power lead to the Pi has a power switch on it (easier
than trying to plug the uUSB connector in poor lighting or access
conditions).

Cheers, T i m

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