Raspberry Pi, Python & Arduino After the other night’s wonderfully slow detour into Processing, I thought I’d try the Raspberry Pi’s “native” language of Python to control an Arduino. This worked rather well, though I don’t have a slick GUI for it yet. pyFirmata is the magic that allows an Arduino running Firmata to talk to Python. It’s fairly easy to install under Raspbian: Get the required packages:sudo apt-get install python-serial mercurialDownload the pyFirmata code:hg clone cd pyfirmata sudo python setup.py install (If this succeeds, you can delete the pyfirmata folder.) Using pyFirmata is a bit different from other Arduino applications: Here’s some code that uses the same hardware as before, but simply reports the temperature and ramps the brightness of the LED up in 10% steps. The output from this might look like: If this doesn’t work, check the output of dmesg to see if you’re using the right port. which should generate something like Send the author to the moon!
Azeez märkmed: Ehitus Vaarika Pi Cluster - 2. osa The Grand Finale In a previous post on Building a Raspberry Pi Cluster, I wrote about how we built a cluster using several Raspberry Pis. This cluster was used for hosting the WSO2Con App. In this post we will take a look at the finishing touches & some interesting information from WSO2Con 2013. The project was unveiled at WSO2Con 2013, London & was an instant hit. Power Supply Like I mentioned in my previous post, we had to build a custom power supply that can cater to the voltage & current requirements of the Raspberry Pi cluster. USB Power Board Shown below is the USB power distribution board which could power up to 8 Raspberry Pis, or a single row in the rack. The +5V & GND lines in the board were connected to the power supply. Raspberry Pi Cluster Rack - the finished product The rack had to be very lightweight, and being able to easily disassemble it was a prerequisites since we had to carry the setup from Colombo, Sri Lanka to London, UK. Raspberry Pi Control Center switch.py code
Spark Linux Tablet Up for Pre-Order, Dev Discusses Economics of Project The upstart Spark Linux tablet is up for pre-order at makeplaylive.com for a target price tag of 200 euros (about $263 USD). You can indicate how many tablets you’re interested in, and your priority number will ensure you’re among the first to receive yours. The Spark folks are hoping to get a strong sense of device demand before the tablet launches. Developer Aaron Seigo also posted a new blog today discussing the financial aspect of the project. Overall, the idea is to put money that comes in back into the project and to Free Software (especially those around open devices) in general. “Where these funds will be targeted will depend on what needs doing, what needs supporting the most and how successful the products are in the market,” said Siego in the post. Seigo notes that part of that will be investing in partnerships with other people and companies that can create software and technologies that enhance Spark.
Raspberry Pi en Southampton The steps to make a Raspberry Pi supercomputer can be downloaded here [9th Jan 2013 update]: Raspberry Pi Supercomputer (PDF). You can also follow the steps yourself here [9th Jan 2013 update]: Raspberry Pi Supercomputer (html). The press release (11th Sept 2012) for our Raspberry Pi Supercomputer with Lego is here: Press Release University Page The press release is also here (PDF): Press Release (PDF). Pictures are here - including Raspberry Pi and Lego: Press Release (More Pictures). We wrote up our work as a scientific journal publication where you can find further technical details on the build, motivation for the project and benchmarking. The reference to the paper is: Simon J. Iridis-pi: a low-cost, compact demonstration cluster Cluster Computing June 2013 DOI: 10.1007/s10586-013-0282-7 These are some links you may find helpfulul
With Raspberry Pi and Cotton Candy, Linux Launches a Revolution All the world may be agog over Microsoft's Windows 8 previews this week, but at the same time a quiet revolution is taking place. It's powered by Linux, it costs a fraction of Windows' price, and its first tangible evidence is now available in not just one but two “sweet” forms: Raspberry Pi and Cotton Candy. Like the idea of freedom from the upgrade treadmill and a price that won't put you behind on your rent? Then you may want to check out this new category of computing devices. The Raspberry Pi There's been talk about the ARM-based, education-focused $25 Raspberry Pi for quite some time already, but this week the diminutive device made its official debut. That's been nothing if not exciting to watch, particularly because the launch was so successful that it brought the UK-based project's site to its knees amid overwhelming demand. Premier Farnell and RS Components have both signed up as licensed manufacturers of the devices, the first run of which apparently sold out within an hour or so.
Opcion para crear un cluster economico Investigando un poco para poder desarrollar un cluster de bajo precio, encontre con un ordenador simple, portable de $35dls. el cual es el "Raspberry Pi", esta placa de bajo coste, cuenta con las especificaciones mas basicas. Las especificaciones son: Procesador ARM1176JZF-S 700Hz256 Mb. de Ram1 puerto USB1 salida de video HDMIRanura para memoria SD (Almacenamiento)Entrada de EthernetConsumo energetico de 3.5WSO Debia, Fedora o ArchLinux Lo importante a resaltar aquí es la entrada de ethernet y el sistema operativo que maneja, ya que este lo podemos emplear como servidor o hacer un mini cluster, ya que nos da la posibilidad de emplear Debian o Fedora, que son buenos para empezar con computo paralelo, la posibilidad de expandir la memoria de almacenamiento, su portabilidad, ya que si quermos trabajar en conjunto con otros, podemos llevarlo a todos lados, ya que es una simple placa.
Introducing the mintBox In association with CompuLab, Linux Mint is proud to present the mintBox. The pro model is recognizable by its ribbed case (its faster performance requires more heat dissipation) We’re passionate about what we do and for our very first Mint device, we wanted something unique, something special and extraordinary. The mintBox is Mint in a box. It’s tiny, it’s silent, it’s extremely versatile and it comes packed with connectivity. The mintBox is the very first branded Mint device About CompuLab CompuLab has been making embedded computer-on-modules for over 15 years. We work with CompuLab on the fit-PC3 to make sure the software tightly fits the hardware and to provide a high level of integration. The Fit-PC3 Basic and the mintBox Pro The mintBox is a CompuLab fit-PC3 unit, with a green retro-lit Linux Mint logo, and 10% of each sale goes towards Linux Mint. About the mintBox The mintBox is amongst the toughest computers on the market. The mintBox features a die-cast solid-metal case Availability
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