Nat, I have a kludge system that i am going to use until the passthrough charger/ battery arrives. It is ugly and being a kludge it is just a gell cell and a power supply, the battery is floating on the PSU. On power loss it picks up the load on the USB ports.
On Sun, Apr 9, 2017 at 7:23 PM, Chuck Hast <[email protected]> wrote: > Tomas, > The second selection looks more like what I am looking for but the first > one > will certainly work. But I do not see mention of pass through charging or > charge while charging. > > Went ahead and bought the first selection. > > On Sun, Apr 9, 2017 at 6:46 AM, Nat Taylor <[email protected]> wrote: > >> I use something like that second battery to power my pi, it's just a cell >> phone charger, I'm not sure what running it while plugged in does to it's >> life. One could put it on a timer so the power cuts, it drains the >> battery for a while, then charges back up if that was advantageous for >> battery life... >> >> On Sun, Apr 9, 2017 at 2:39 AM Tom <[email protected]> wrote: >> >> > 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/TeckNet-Universal-16750mAh-Output- >> PowerZen/dp/B00FAU7ZB2/ref=pd_cp_107_1?_encoding=UTF8&pd_rd_ >> i=B00FAU7ZB2&pd_rd_r=0JMMHXMXK7RYWY9K361K&pd_rd_w= >> 712hM&pd_rd_wg=6mOCV&psc=1&refRID=0JMMHXMXK7RYWY9K361K> >> > 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 >> > <https://www.amazon.com/PowerTitan-19200mAh3-Port-Portable- >> External-Technology/dp/B01B534D4Y/ref=sr_1_1?s=wirele >> ss&srs=5713662011&ie=UTF8&qid=1491729627&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. >> > _______________________________________________ >> > PLUG mailing list >> > [email protected] >> > http://lists.pdxlinux.org/mailman/listinfo/plug >> > >> _______________________________________________ >> PLUG mailing list >> [email protected] >> http://lists.pdxlinux.org/mailman/listinfo/plug >> > > > > -- > > Chuck Hast -- KP4DJT -- > Glass, five thousand years of history and getting better. > The only container material that the USDA gives blanket approval on. > > > -- Chuck Hast -- KP4DJT -- Glass, five thousand years of history and getting better. The only container material that the USDA gives blanket approval on. _______________________________________________ PLUG mailing list [email protected] http://lists.pdxlinux.org/mailman/listinfo/plug
