PiON is a true uninterruptible power supply (UPS) for all Raspberry Pi models as long as they have GPIO pins. The whole package you get includes a PiON Board, a 7.2V 700mAH AAA NiMH battery pack with connector, cable between PiON Board and Raspberry Pi, and a cable between an AC to DC power adapter and the PiON Board. The AC to DC power adapter is not included in the package but you can easily find one at online or local stores, the specification of it should has an output between 7v and 15v, an output minimum 15w, and with a 5.5mm x 2.1mm connector.

You can find more information here: www.wugrobot.com/products/pion/

The basic function is obvious the UPS function. When external power starts to decline for whatever reason, the PiON Board can detect the decline and instantly switch power supply to battery pack without interrupting the running of Raspberry Pi. When external power is back, the PiON Board will switch power supply back to it and recharge the battery pack.

Second function, PiON can server as the soft switch of Raspberry Pi. The Power Switch on PiON Board (see above picture) can soft shut down and start Raspberry Pi in any condition at any time, so it provides a very convenient way to power up and down Raspberry Pi just like you do through the interface.

Beyond above two functions, PiON Board also monitors the battery voltage, it provides an option to automatically soft shut down the Raspberry Pi through the Function Switch 1 when the voltage reaches a specific low level. This provides you another layer of confidence that you won't loss your data or avoid SD Card corruption.

Lastly, Function Switch 2 will enable you charge either AAA battery or AA battery pack although the default battery pack included in the package is AAA battery pack.

PiON can help you on following situations:

• Avoid Raspberry Pi Micro SD Card corruption, that is a common issue
• Move Raspberry Pi around without shutting it down (included battery pack can support up to a couple of hours)
• Avoid lose of your hard work
• Turn on and shut down Raspberry Pi when no command terminal is available
• etc., etc.

The last picture showing an example of PiON application. It features one of our future server and file management system running on Raspberry Pi, you can see the whole system has several layers and PiON is sitting at the top. Please note in the picture the PiON Board is in purple color, it is our initial version of the product.