UPS fro Rapberry Pi & Arduino

[Cloggie]

At my house I have several Raspberry Pi's and one Arduino they work fine until 220V stops working....

 

The Arduino will work again when the 220V comes back but most of the time the SD card of the Raspberry Pi is corrupted and I need to reformat them again.

 

Yes, I can install a small UPS with every Raspberry Pi and Arduino but to have a UPS with all CPU's will be expensive and overdone...

 

If possible it needs to work for a few hours as that long it can take - especially now during the raining season - before the power comes back

 

Anybody in Thailand had the same problem before, solved it and would like to share it with me?

 

Thanks.

Edited September 23, 2016 by Cloggie

[johng]

Yes the power cuts especially the brown outs are very bad for electronics  and the PI seems rather sensitive to power supply problems.

 

http://raspi-ups.appspot.com/en/hardware.jsp

and

http://raspi.tv/2013/testing-rs-5200-mah-usb-lithium-battery-pack-as-a-ups

 

or DIY from parts

http://www.repairhub.co.uk/content/resources/raspberry-pi-battery-backup

 

I'm using  RS 5000mAh Lithium Polymer PB-A5200   634 baht    but out of stock

 

http://th.rs-online.com/web/p/power-banks/7757508/?searchTerm=775-7508&relevancy-data=636F3D3126696E3D4931384E525353746F636B4E756D6265724D504E266C753D656E266D6D3D6D61746368616C6C26706D3D5E5C647B337D5B5C732D2F255C2E2C5D5C647B332C347D2426706F3D313426736E3D592673743D52535F53544F434B5F4E554D4245522677633D4E4F4E45267573743D3737352D3735303826

 

also here

http://uk.rs-online.com/web/p/power-banks/7757508/?searchTerm=7757508&relevancy-data=636F3D3126696E3D4931384E525353746F636B4E756D6265724D504E266C753D656E266D6D3D6D61746368616C6C26706D3D5E5C647B367D247C5E5C647B377D247C5E5C647B31307D2426706F3D313426736E3D592673743D52535F53544F434B5F4E554D4245522677633D4E4F4E45267573743D37373537353038267374613D3737353735303826

 

or

TeckNet? PowerZen G2 2nd Gen 9600mAh 2-Port (3.4A Output) Portable Charger External Battery Pack Power Bank with BLUETEK Smart Charging Technology

http://www.amazon.co.uk/dp/B00FBD3MVA/ref=nosim?tag=raspiups0f-21

Edited September 24, 2016 by johng

[johng]

The other thing to do   to try stoping the  sd card corruption is mount the  file system as read only   not always practical though.

[Cloggie]

Thanks for the information.

 

Running your Pi / Arduino from a battery pack is not a good idea in my opinion, simply because the battery pack is not made for that - it works yes, but it will kill your battery pack!

Found this one: https://www.modmypi.com/raspberry-pi/breakout-boards/pi-modules/ups-pico

 

Mount the SD card is a solution but not in my case as I run a database on the SD card, I know also not a good idea :-)

 

Still need to find a better solution, will post it here if I find it.

 

[boyzfunhouse]

What kind of database that you use on your RPi? I suggest Beaglebone Black. It has 4GB eMMC on board and also has micro sdcard slot too.

[Cloggie]

Thanks - will have a look at that one and some alternative PI's as well.

 

Unfortunately my Raspberry Pi passed away - RIP

 

It will boot, work for two minutes and then it will switch off itself :-(

[johng]

Just in case anyone  has a need for a cheap Raspberry Pi UPS  solution

 

http://www.ebay.com/itm/5V-UPS-Power-Diy-Board-Charger-Step-up-DC-DC-Converter-Module-3-7V-Li-ion-LiPo-/282352753274?hash=item41bd891a7a:g:VgIAAOSw4DJYmTkz

 

5V UPS Power Diy Board Charger & Step-up DC DC Converter Module 3.7V Li-ion LiPo   arrives  much smaller than I expected

(tiny solder pads)

and I slung together  with scrap parts and old Samsung  phone battery a USB powerbank/charger/UPS that works with  the Raspberry PI... most importantly the power is not interrupted when pulling the mains plug ( like most powerbanks do ) 

they also have a discharge protection module but I didn't order one

http://www.ebay.com/itm/3-7V-4-2V-18650-Li-ion-Lithium-Battery-Charger-Over-Discharge-Protection-Module-/272602721327?

 

 

Excuse my crappy soldering

 

[Cloggie]

Thanks for the update, will have a look at this.