There are probably other USB power banks which can be charged and
discharged together. Here are two examples:
https://www.amazon.com/TeckNet-Universal-16750mAh-Output-PowerZen/dp/B0
0FAU7ZB2/ref=pd_cp_107_1?_encoding=UTF8&pd_rd_i=B00FAU7ZB2&pd_rd_r=0JMM
HXMXK7RYWY9K361K&pd_rd_w=712hM&pd_rd_wg=6mOCV&psc=1&refRID=0JMMHXMXK7RY
WY9K361K
https://www.amazon.com/PowerTitan-19200mAh3-Port-Portable-External-Tech
nology/dp/B01B534D4Y/ref=sr_1_1?s=wireless&srs=5713662011&ie=UTF8&qid=1
491729627&sr=1-1
Based on recommendation from this guy:
http://raspi-ups.appspot.com/en/index.jsp He used older model which is
no longer available.
I wonder how smart is the circuit in avoiding the charge/discharge
battery cycles when the power is on - it relates to the battery life.
Tomas
On Sat, 2017-04-08 at 18:57 -0700, Chuck Hast wrote:
> On Sat, Apr 8, 2017 at 3:42 PM, Tom <[email protected]>
> wrote:
>
> > dd nor rsync alone will not be able to do full backup of running
> > computer (RPi).
> >
>
> That was what I figured, just wanted to make sure.
>
>
> > The best course of action is to separate the OS from your data -
> > whatever your RPi is normally writing - then backup each
> > separately.
> > * When you separate the data, you could even store it off the RPi
> > avoiding need for local data backups on RPi altogether.
> >
>
> The drive has two partitions on it /boot and /. /boot is a vfat, the
> rest
> of
> it is ext4. I supposed that I could stop the service (weather data
> capture)
> back up the files that are critical to the weather station.After the
> back up
> is done start the service again. Maybe store them on a jump drive and
> after the station service is back up and running ship them off to the
> location
> I will keep the back ups in. I figure that I could do the back up in
> the wee
> hours of the morning.
>
>
> > * If you want to keep the data on RPi, you could back it up by
> > rsync
> > to separate media (USB) or a network storage
> > * You cannot back up the OS while you are using it - that is why
> > this
> > is normally done on a separate computer. It is easier and faster
> > than
> > booting your RPi from USB or network and then doing the backup.
> > * Perhaps the OS does not need to be backed up often or not at
> > all as
> > you could simply create separate OS image, even on another SD card
> > attached to your Pi.
> >
>
> All I really need for recovery is the WeeWx db file, WeeWx config
> file,
> skins
> file and the nginx configuration. I could actually keep a separate
> image and
> just insert the latest files and quickly swap out the bad SD card.
> That
> should
> take care of it.
>
> I should be able to automate the OS configuration, so that I just run
> a
> script
> it looks for the SD card, installs the OS makes sure that the
> parameters
> that
> I set manually on installation are set correctly, probably can
> automate the
> whole process.
>
> * Your backup target/media could be another SD card connected to
> RPi
> > in a SD card reader, that way you could just swap the cards ....
> > Thinking outside of a box - perhaps you need little UPS for your Pi
> > to
> > avoid regular data corruption altogether. There are some USB
> > charging
> > batteries which can be charged and used both at the same time (most
> > can
> > be either charged or used, not both). Modest battery could keep
> > your
> > Pi running for hours.
> >
>
> I have been looking for a battery pack that will allow me to let it
> float
> on the
> powersupply until power goes away, then it takes over. So far all of
> them
> that
> I have looked at will not switch between charge/float/discharge. I
> have seen
> a couple that plug into the pin field on the RPi, but I am trying to
> keep
> the
> case clean. I have built up a power supply with a battery on it, and
> a heavy
> duty USB dual port power cartridge that supplies the power I need for
> the
> RPi and the WX station console. It is kind of big, I am certainly
> looking
> for
> one of the power pack batteries that does not care if it is being
> charged or
> not.
>
>
> > I hope that this is pointing you in the right direction to your
> > particular circumstances.
>
>
> Yes it confirmed most of what I was already suspecting. Now if I can
> just
> find a nice clean battery pack that meets the above requirement.
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