[arm-allstar] UPS Suggestions...

[Larry]

Doug any additional info about the boards as to cost and order point?

Larry - N7FM

On 07/02/2018 07:52 AM, "Doug Crompton via arm-allstar" wrote:
> I want to make everyone aware that in the howto's at hamvoip.org there is a
> power shutdown circuit that will shutdown
>   the Pi and any associated radio properly upon power failure and return
> power when it comes back up. We had boards made to do this which are
> available unpopulated or wired.
>
> https://hamvoip.org/hamradio/power_shutdown_monitor/
>
> ​While this is different than a UPS backup as it does not sustain operation
> in a power failure it might work in some applications. It was intended for
> unattended power shutdown in a portable or mobile application.
> ​
>
> *73 Doug*
>
> *WA3DSP*
>
> *http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>*
>
>
>
> On Mon, Jul 2, 2018 at 10:44 AM, "Sean McCarthy via arm-allstar" <
> arm-allstar at hamvoip.org> wrote:
>
>> The script in case anyone else would like to take a look...
>>
>> On Mon, Jul 2, 2018 at 10:33 AM Sean McCarthy <smccarthy61 at gmail.com>
>> wrote:
>>
>>> Jesse,
>>>
>>> What did you need to do to get the script to run? I followed the
>>> instructions from Alchemy with no luck, but it was written for
>> Rasberrian,
>>> so theres that...
>>>
>>> Here is my failure:
>>>
>>> [root at K8FBI UPS]# sudo python GPIO-shutdown-sample.py
>>> Traceback (most recent call last):
>>>    File "GPIO-shutdown-sample.py", line 32, in <module>
>>>      import RPi.GPIO as GPIO
>>> ImportError: No module named 'RPi'
>>> [root at K8FBI UPS]#
>>>
>>> Thanks!
>>>
>>> On Thu, Jun 28, 2018 at 10:21 PM "Jesse Royall via arm-allstar" <
>>> arm-allstar at hamvoip.org> wrote:
>>>
>>>> Sean,
>>>> Yes it will restart when power is applied and will start charging again.
>>>> If you do a shutdown then no. You have to remove power and apply it to
>>>> start back up. But it will start up if the batteries go dead and power
>>>> comes back on. It has a smart charge built on. You setup a python
>> script to
>>>> monitor the voltage and it will initiate a safe power down before they
>> go
>>>> dead. Then when they go dead it will restart the pi when power is
>> applied
>>>> back to charge the batteries. What sold me is that one power supply to
>>>> power the ups then since it’s a hat, it supplies the pi with power on
>> the
>>>> header. If the cells go bad you just replace them like AA batteries. You
>>>> can replace them one at a time without loosing power. You can also stack
>>>> them to increase the battery time and they have connections to daisy
>> them
>>>> and charge the next ups. Has a reset button on board to force a restart
>>>> when pressed. The only problem I’ve had is I had one bad cell once and
>> it
>>>> would take the other cell down with it. But the voltage monitor would
>> catch
>>>> it and shut down the pi when unplugged it. The other is when picking up
>> the
>>>> pi, I had a habit of hitting the reset accidentally.
>>>>
>>>> I’m was working on a script to watch the voltage and when it sees a
>>>> voltage drop it tells you via courtesy tone your on battery and possibly
>>>> speak voltage at intervals. Since the cron job looks for low voltage to
>>>> safe power down I figure I could use that check to report back to
>> allstar
>>>> and either tattle via tone or voice.
>>>>
>>>>
>>>> Sent from my iPhone
>>>>
>>>>> On Jun 28, 2018, at 10:11 AM, Sean McCarthy via arm-allstar <
>>>> arm-allstar at hamvoip.org> wrote:
>>>>> I was looking at the pi uptime ups, but it was unclear if it would
>>>> restart
>>>>> the PI unattended. If it does, thats probably the way I'll go...
>>>>>
>>>>> On Thu, Jun 28, 2018 at 10:26 AM "Jesse Royall via arm-allstar" <
>>>>> arm-allstar at hamvoip.org> wrote:
>>>>>
>>>>>> http://alchemy-power.com/pi-uptime-ups/
>>>>>>
>>>>>> This is the one I use. Uses 2 18650 batteries. I get about 10 hrs of
>>>>>> backup. It’s stackable. Has a reset button on it. Monitors the
>> voltage
>>>> for
>>>>>> a safe power off. And boots back up when power is applied.
>>>>>>
>>>>>> Sent from my iPhone
>>>>>>
>>>>>> _______________________________________________
>>>>>>
>>>>>> arm-allstar mailing list
>>>>>> arm-allstar at hamvoip.org
>>>>>> http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
>>>>>>
>>>>>> Visit the BBB and RPi2/3 web page - http://hamvoip.org
>>>>> _______________________________________________
>>>>>
>>>>> arm-allstar mailing list
>>>>> arm-allstar at hamvoip.org
>>>>> http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
>>>>>
>>>>> Visit the BBB and RPi2/3 web page - http://hamvoip.org
>>>> _______________________________________________
>>>>
>>>> arm-allstar mailing list
>>>> arm-allstar at hamvoip.org
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>>>>
>>>> Visit the BBB and RPi2/3 web page - http://hamvoip.org
>>>
>> _______________________________________________
>>
>> arm-allstar mailing list
>> arm-allstar at hamvoip.org
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>>
>> Visit the BBB and RPi2/3 web page - http://hamvoip.org
>>
> _______________________________________________
>
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>
> Visit the BBB and RPi2/3 web page - http://hamvoip.org