[chbot] 9.6" tablet for < NZ$300

[Geoff]

Be aware that most tablets cannot provide much power over OTG. They can
provide enough to power a USB drive, and some can power a mouse. But when I
tried to power a atmega32u2 development board via OTG, it was very
dependent on the tablet make/model as to whether it could manage.

Stackexchange
<https://electronics.stackexchange.com/questions/181500/how-much-current-can-an-android-phones-usb-port-supply>
says:

> The OTG spec calls for at least 8mA and allows negotiation for higher
> currents if the peripheral needs more power. OTG devices can provide up to
> 500mA, but in realistic terms, handheld portable electronics don't have
> 500mA to spare for external loads. 100mA is a commonly accepted realistic
> maximum.


So you may want to check with people who actually have the tablet you wish
to buy.

G

On Mon, Aug 28, 2017 at 8:21 AM, Mark Atherton <markaren1 at xtra.co.nz> wrote:

> Hi All,
>
> I have been looking around for a 10" tablet for a while and the Samsung
> SM-T560 is currently on sale.
>
> Unit has quad core 1.3Ghz CPU, 1.5GB RAM, 8GB internal FLASH, uSD card
> slot, but more to the point has WiFi and USB OTG - OTG being the deal-maker
> here. Also running Android 4.4 which is getting on a bit.
>
> Main interest is Web surfing, video playback, and control of some external
> home-cooked hardware via OTG (and associated 5V power).
>
> One test report claimed almost 9hrs of continuous video playback on a
> single charge which is quite respectable.
>
> http://www.gsmarena.com/samsung_galaxy_tab_e_9_6-7295.php
>
> Is anyone aware of a significantly better value-for-money product in the
> sub-$300 range (since I am picking it up, this includes GST, and $0
> shipping).
>
> Thanks, Mark
>
>
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