On 26/01/2018 09:29, Tauno Voipio wrote:
> On 26.1.18 00:13, James Harris wrote:
>> I was looking for a basic UPS which would allow a Pi to keep running for
>> a few minutes if power were lost or while the Pi was being transferred
>> from one mains socket to another. Ideally, it would tell the OS to shut
>> down, if necessary, and would restart the machine when the mains came
>> back online.
>>
>> Well, I came across the following one which looks excellent. It seems to
>> do all I wanted and the battery can be upgraded to give longer life.
>>
>> https://www.modmypi.com/raspberry-pi/power-1051/ups-boards-1051/ups-pico
>>
>> Any opinions on it? And as it is out of stock at the moment, would you
>> recommend any similar UPS?
>>
>>
>>
>> Some of the description:
>>
>> The UPS PIco will automatically shut-down your Raspberry Pi if there is
>> a power failure, and can be set to automatically monitor and reboot your
>> Pi once power has been restored!
>>
>> When the cable power on the Raspberry Pi is absent, insufficient, or the
>> device detects a power failure, the UPS Pico automatically switches to
>> the unit’s battery source. The module then continues to check the
>> voltage on the Pi and switches automatically back to the regular cable
>> supply when power is once again available.
>>
>> The UPS PIco is powered and the battery pack intelligently charged via
>> the GPIO pins on the Raspberry Pi, so no additional cabling or power
>> supply is required.
>
>
> Did you read the page you linked to?

Yes.

>
> It states bigger batteries as accessories.
>

I know. How is that relevant?

The main board is out of stock at the moment and I would welcome a
suggestion for a similar UPS. The query is unrelated to the fact that it
accepts bigger batteries.

Incidentally, they claim that the inbuilt small battery will fit in many
cases. And, if not, they have a case which takes the HAT. the Pi and one
of the larger batteries. So it looks as though it is a very good,
self-contained solution.

I thought to mention it as I've read the recent discussions here on
UPSes and they focussed on things like mobile phone chargers. I bought
one of those on the basis that the charger might allow power output
while it was, itself, being charged. Unfortunately, although a video
review of a similar device from the same manufacturer said that it would
do both at once, the one I received did not - which makes it useless as
a UPS.

Hence, I thought folks here might be interested in the PIco I mentioned
at the outset.


--
James Harris

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