Feeds
Pimoroni/Cyntech Pibrella

Hungry for humbler Pi? Check out kid-friendly LED-laden Pibrella

Cyntech/Pimoroni GPIO add-on board sets Raspberry Pi alight

Internet Security Threat Report 2014

Review There is no shortage of clip-on boards designed for the Raspberry Pi, almost all designed to make the tiny computer’s GPIO pins more accessible in order to ease the connection of devices to it, particularly ones that operate at voltages that are not Pi friendly.

Pimoroni/Cyntech Pibrella

Jump to the beep: the Pibrella from Cyntech and Pimoroni

For instance, I have a PiFace Digital which provides screw-lock wire attachments, switches, LED indicators and relays. It’s downside, perhaps, is that it doesn’t provide the Pi’s GPIO with better connectivity so much as use the GPIO to deliver its own different set of inputs and outputs. So projects for raw Pis need a little extra thought before they’re implemented on a PiFace.

Yet this ‘embrace and extend’ approach is the one Pimoroni and Cyntech have taken with the Pibrella, one of the latest Raspberry Pi add-on boards. If the PiFace Digital is the BBC Micro Model B of the Pi add-on world – big, expensive, feature-packed but possible function overkill for most users – then the Pibrella is the Sinclair ZX81: cute, cheap, cheerful but rather more rudimentary.

What we have is a small, purple board with a buzzer, three LEDs bulbs – a traffic light set comprising one each of red, green and yellow – a button and eight IO ports with female connectors. Four of the ports are inputs, the rest outputs; all are connected to on-board surface-mound LEDs.

Compare that to the eight LEDs, two relays, four switches, eight digital inputs, eight open-collector outputs and seven jumper blocks of the PiFace Digital. The PiFace looks like a serious bit of electronics; the Pibrella looks like a toy.

Four inputs, four outputs, three LED bulbs, a switch and a beep

Four inputs, four outputs, three LED bulbs, a switch and a beep

But it’s not entirely unsophisticated. For example, Pibrella has an I²C bus header, though it’s currently pin-less and not readily usable. The board also has a micro USB port for driving connected devices that need more power than the Pi can provide but which, handily, will also drive the Pi the board is connected to, through the GPIO.

All of the Pibrella's useable components are made accessible through a new Python library – just as PiFace’s are, incidentally – which neatly abstracts away all the Raspberry Pi GPIO stuff which you might otherwise need. This makes it very easy to target specific parts of the Pibrella, clearly and unambiguously.

The IO pins are all clearly labelled A through H, and this is how you address them in code, with no need to worry about pin numbering – pin location or chip GPIO assignments, all of which are different on the Pi itself – or which version of the Pi you have.

The Pibrella’s micro-USB port can power the Pi – or drive high-power connected devices

The Pibrella’s micro-USB port can power the Pi itself or drive high-power connected devices

The buzzer comes with a couple of pre-defined tones, set in the library. To me, they didn’t sound very different from each other or that appealing either. It reminds me of the crude noise maker that came with the electronics kit I got for Christmas 1981. A true tone generator it ain’t.

Providing a secure and efficient Helpdesk

Next page: The main event

More from The Register

next story
Will.i.am gets CUFFED as he announces his new wristjob, the PULS
It's got four KILOWATTS of something, apparently
Don't wait for that big iPad, order a NEXUS 9 instead, industry little bird says
Google said to debut next big slab, Android L ahead of Apple event
Netscape Navigator - the browser that started it all - turns 20
It was 20 years ago today, Marc Andreeesen taught the band to play
A drone of one's own: Reg buyers' guide for UAV fanciers
Hardware: Check. Software: Huh? Licence: Licence...?
Apple SILENCES Bose, YANKS headphones from stores
The, er, Beats go on after noise-cancelling spat
Jaguar Sportbrake: The chicken tikka masala of van-sized posh cars
Indian-owned Jag's latest offering curries favour with us
The Apple launch AS IT HAPPENED: Totally SERIOUS coverage, not for haters
Fandroids, Windows Phone fringe-oids – you wouldn't understand
Here's your chance to buy an ancient, working APPLE ONE
Warning: Likely to cost a lot even for a Mac
prev story

Whitepapers

Forging a new future with identity relationship management
Learn about ForgeRock's next generation IRM platform and how it is designed to empower CEOS's and enterprises to engage with consumers.
Win a year’s supply of chocolate
There is no techie angle to this competition so we're not going to pretend there is, but everyone loves chocolate so who cares.
Why cloud backup?
Combining the latest advancements in disk-based backup with secure, integrated, cloud technologies offer organizations fast and assured recovery of their critical enterprise data.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?
Saudi Petroleum chooses Tegile storage solution
A storage solution that addresses company growth and performance for business-critical applications of caseware archive and search along with other key operational systems.