Feeds

Boffin dreams up smart battery gizmo for Raspberry Pi fiddlers

Kickstarter drive aims to bring backup juice to the masses

SANS - Survey on application security programs

Raspberry Pi-packing makers who are devising mobile projects or seeking to set up stationary Pi-based devices that operate beyond the reach of the mains will get a big jolt of help next May if a new doohickey wins sufficient backing on crowd-funding site Kickstarter.

MoPi is a T-shaped board that drops onto the tiny computer’s GPIO pins to provide smart input from DC power sources.

Driving a Pi on battery power is nothing new, of course, but the MoPi, designed by Sheffield University computer science boffin Hamish Cunningham, provides solutions to the most common problems encountered when constructors run Pis away from the mains.

MoPi

MoPi allows two parallel energy sources to be connected to the Pi so dying batteries can be swapped while other cells continue to power the Pi. In conjunction with software it will detect an ailing battery feed and shut the Pi down in good time to prevent a sudden loss of power from potentially corrupting the computer’s SD storage.

If the computer is running off the mains too, the MoPi allows the batteries to operate as an Uninterruptible Power Supply (UPS).

The MoPi board includes pass-through GPIO ports so it’ll be easy to solder on a second set of GPIO pins if you have other devices you need to hook up to your Pi too.

Other refinements include a pair of LEDs to give a visual indication when the voltage on either or both has fallen to a critically low level. A third LED indicates the state of the combined power being fed to the Pi. The on-board electronics are managed by a programmed microcontroller, which also drives the board’s 5V switch mode voltage stabiliser.

At the moment, the microcontroller knows how to deal with alkaline and NiMH rechargeable batteries, but Hamish is working to add support for Lithium Ion rechargeables too. He also wants to allow it to feed 3.3V to the Pi, which is capable of running at that voltage.

Kickstarter pledges of £18 or more will get you a MoPi when it ships. Pledge at least £130 and you can also get one of the two education-oriented outdoor experimentation kits Hamish and Co. will also be supplying. More info on Kickstarter. ®

SANS - Survey on application security programs

More from The Register

next story
Samsung Galaxy S5 fingerprint scanner hacked in just 4 DAYS
Sammy's newbie cooked slower than iPhone, also costs more to build
Leaked pics show EMBIGGENED iPhone 6 screen
Fat-fingered fanbois rejoice over Chinternet snaps
Oh no, Joe: WinPhone users already griping over 8.1 mega-update
Hang on. Which bit of Developer Preview don't you understand?
Microsoft lobs pre-release Windows Phone 8.1 at devs who dare
App makers can load it before anyone else, but if they do they're stuck with it
True optical zoom coming to HTC smartphone cameras
Time to ditch that heavy DSLR? Maybe in a year, year and a half
Rounded corners? Pah! Amazon's '3D phone has eye-tracking tech'
Now THAT'S what we call a proper new feature
Leaked photos may indicate slimmer next-generation iPad
Will iPad Air evolve into iPad Helium?
Feast your PUNY eyes on highest resolution phone display EVER
Too much pixel dust for your strained eyeballs to handle
Zucker punched: Google gobbles Facebook-wooed Titan Aerospace
Up, up and away in my beautiful balloon flying broadband-bot
prev story

Whitepapers

Securing web applications made simple and scalable
In this whitepaper learn how automated security testing can provide a simple and scalable way to protect your web applications.
3 Big data security analytics techniques
Applying these Big Data security analytics techniques can help you make your business safer by detecting attacks early, before significant damage is done.
The benefits of software based PBX
Why you should break free from your proprietary PBX and how to leverage your existing server hardware.
Top three mobile application threats
Learn about three of the top mobile application security threats facing businesses today and recommendations on how to mitigate the risk.
Combat fraud and increase customer satisfaction
Based on their experience using HP ArcSight Enterprise Security Manager for IT security operations, Finansbank moved to HP ArcSight ESM for fraud management.