November 12 2013 - Wandboard Java Hands-on
In today's tutorial we are showing how to quickly install Java onto the Wandboard and explorer the Java2Demo applications.
To get started you will need to prepare a Wandboard that boots from a SD card containing Ubuntu that can be found on the Wandboard Download Page.
Step 1: Download Ubuntu 12 for your Wandboard from the Wandboard Download Page and create a bootable SD card. (refer to the document that comes with the download).
Step 2: Boot your Wandboard. All instructions below should be performed on your Wandboard.
Step 3: Get the Oracle Java files
Open Firefox and go to Oracle JDK download site as below:
Step 3a: Click to accept the License agreement (after reading it).
Step 3b: Select "jdk-7u45-linux-arm-vfp-sflt.tar.gz" (as highlighted).
Note : Select SOFT FLOAT ABI since Wandboard Ubuntu 12 currently does not support hard float.
The JDK will be saved in "~/Downloads" directory (default Firefox download location)
Step 3c: On the same page, scroll down a bit further and select the demo images "jdk-7u45-linux-arm-vfp-sflt-demos.tar.gz"
The JDK demos will be saved in "~/Downloads" directory (default Firefox download location)
Step 4: Now that you have all files. Let's install them.
Step 4a: Install JDK7 on Wandboard/Ubuntu by opening the terminal window
Change the current directory to ~/Downloads ($cd Downloads)
Unzip JDK 7 to /opt ($sudo tar zxvf jdk-7u45-linux-arm-vfp-sflt.tar.gz –C /opt)
Step 4a: Install JDK demos on Wandboard/Ubuntu in a simalar manner as installing the JDK by using the terminal window
Change the current directory to ~/Downloads ($cd Downloads)
Unzip JDK 7 demos to /opt ($sudo tar zxvf jdk-7u45-linux-arm-vfp-sflt-demos.tar.gz –C /opt)
Step 5: Ensure that you installed Java
Step 5a: Open terminal window.
Add JDK bin into PATH variable. (#export PATH=$PATH:/opt/jdk1.7.0_45/bin)
Test Java version. (#java –version)
(If you see the message as the shown above screen, it means Java VM has been installed successfully!)
Step 6: Java Demo Playtime
Now all is installed. Let's get the demo loaded on your desktop.
To run the demo application:
($java –jar Java2Demo.jar)
Within moments you will see the Java2Demo application appearing on your desktop. (as below).
November 4 2013 - Wandboard camera says "Cheese"
Over the past couple months we have seen multiple requests in the forums regarding MIPI camera's that can connect on the Wandboard FPC.
e-con Systems, a company making camera modules, has picked the Wandboard to show off their new e-CAM51IMX6 5 megapixel MIPI camera module based around the OmniVision OV5640 image sensor which can be simply connected to the Wandboard MIPI FPC expansion connector.
e-con Systems must have thought. We not only can make it. We can as well show it off on Youtube. : https://www.youtube.com/watch?v=ixtSAx9h5Us
The camera modules can be purchased directly from e-con Systems webpage.
October 28 2013 - Wandboard GPIO Hands-on
In this tutorial we show you how to connect a LED to the Wandboard GPIO and how you can easily control it.
For this you will need to connect a LED by cable to connector JP4.
Connect one wire to JP4 pin 4
Connect the GND return pin from the LED to JP4 pin 19
After this is done go to the Wandboard download center, Download the Ubuntu demo image and create a bootable SD card
On your Wandboard open the built in terminal
To turn the LED on type :
# cd /sys/class/gpio/gpio75
# sudo Su
# echo out > direction
# echo 1 > value
To turn the LED off type :
# echo 0 > value
To let the LED flash with 1 second intervals type :
# while [ 1 ]; do echo 1 > value; sleep 1; echo 0 > value ; sleep 1;done
And there you go. your "do-it-yourself" Christmas lighting system.
October 19 2013 - Yocto 1.5 BSP loves the Wandboard
Lots of new features are available in the new Yocto 1.5 release for the Wandboard (solo/dual/quad).
Get it now : http://freescale.github.io/doc/release-notes/1.5/
October 17 2013 - Wandboard SATA Boot (THIS VOIDS YOUR WARRANTY)
Not scared of using a solder iron and voiding your warranty?
Remove 2 resistors and place one resistor back at the bottom side of the Wandboard Quad Module.
Top row : 8th resistor counting from the JTAG header REMOVE (R145)
Bottom row : 6th resistor counting from the same side. REMOVE (R174). 5th resistor (R173) ADD one of resistors you removed earlier.
If you want to add a SSD or 2.5 inch harddisk you will also need to make a power cable that takes the 5V and GND signals from the JP4 expansion header.
October 7 2013 - Wandboard Icecream Sandwich Wannabe
Our beloved Wandboard as any freshman in college sometimes gets homesick and just want cuddle old friends.
So touching and heartwarming. Wandboard at minus 17 degrees Celsius running Android Jellybean in the fridge side by side with his IceCreamSandwich buddies.
September 23 2013 - bigboards.io and Wandboard
Tell us a bit about yourself/team
As our website http://bigboards.io indicates, we are 4 professionals with various backgrounds in software and technology. In the past years we all have become firm believers in the possibilities and opportunities that Big Data can offer. However, we all look at it from a different angle: business, marketing, software stacks and hardware. But that actually makes us a stronger team.
What project are you currently working on?
Our experiences in the field of Big Data convinces us there is an enormous lack of a good educational platform to learn Big Data technologies. Note that these are intrinsically all cluster technologies, hence, you need multiple computers to truly experience the implications. You not only have to make an extra financial investment to buy the hardware (nodes, power, network, cases, cables, etc) but also (and moreover) the additional investment in time because of the extra complexity in the software setup, deployment and management. We experienced these issues hands on when we were running hackatons at bigdata.be for enthusiasts wanting to learn Big Data technologies.
For multiple years, we have been toying with various ideas in diverse areas. Finally we hope to bring a lot of them together in BigBoards:
• A big data cluster should consist of a number of identical nodes (obviously)
• One big data node should be only a sandwich of a motherboard and a harddisk to bring the processing as close as possible to the data
• Use ARM technology to reduce the power consumption of one node
• Scale out a cluster instead of scaling up a single node.
• The ratio of reduced power consumption per node and the number of nodes in the cluster will favor the power consumption of the whole cluster
• Use a chimney design to bring multiple nodes together. Use natural convection to cool down the nodes.
• After some first 3D designs, we naturally came to an hexagon layout with an integrated network switch and power distribution as bottom- and backplane. (Cfr. sketches)
How did the Wandboard help you to kick-start your project?
The idea behind BigBoards came rather quickly, but we still needed to validate the idea. We wanted to create a prototype, install a big data platform on it and start doing some tests. Since we do this in our spare time, we have a limited budget so we were very glad when we found out about the Wandboard. We quickly ordered 6 Wandboards and a few days later we got started on building the prototype. The result can be viewed at http://ow.ly/i/2R9tw
Why you picked the Wandboard and how does it fit in your project?
BigData is all about bringing processing close to storage. Because of that we need an energy efficient board which still has plenty of memory and most importantly, a SATA connector to connect a 2.5” harddisk. We have searched a long time for this combination but the options that we found either had insufficient memory or lacked a SATA port. Eventually the Wandboard fits most of the needs. To be honest, we could do with more memory, but nevertheless the Wandboard really gives you value for your buck.
The Wandboard is completely opensource, is this important for your project?
We were not specifically looking for open source hardware when we started out with BigBoards. Actually, we barely knew about the fact that hardware had been open sourced. But having access to the designs, especially the 3D ones, really helped us to create the 3D printed parts we needed. No need to measure everything, just take the 3D design and engineer the custom parts you need.
You can imagine that we will dive into the schematics of the Wandboard a lot more in the next steps of our project. Having the possibility to do so really, speeds up our work
What are your next steps and will you use the Wandboard in your final design?
So, after buying the 6 Wandboards, we 3D printed some supports (cfr sketches) to bring the Wandboards and harddisks together in our hexagon layout. We also bought some temperature sensors, which we hooked to some Arduino’s. That's our continuous data logger.
Right now we are setting up our lab prototype to have it run a perpetual data sort which continuously pushes out it's measurements to the internet. That way we will create a live stream on our site. The goal is to prove that this setup can actually run big data workloads and that the chimney design is efficient enough to cool the various components without the need for active cooling.
We would like to use the Wandboard EDM modules in the final design since they have a small footprint and allow an easy upgrade path when more powerfull modules come out.
How can people that have a Wandboard join your project?
We try to open up as much of the designs and tools as possible. This way we hope other people can benefit from the things we try out and experiment with. In a later stadium we will bring out software packages called droplets which we will have to test. Of course feedback, comments and ideas about BigBoards are always welcome.
If you have a new project. Will you use the Wandboard again?
We are really charmed by the Wandboard and it is certainly at the top of our head when we would do a new hardware related project.
Where can people get more information about your project and get in touch with you?
Very soon we will be selling our prototypes on demand that are built from standard components (incl. 6 Wandboards), a 3D printed skeleton and a custom case.
All information of our progress and final product is available at http://bigboards.io
September 11 2013 - Wandboard User Showcase
Working on a project where you use the Wandboard in your design and want to share it with the world?
Above you find a few examples :
Wandboard with a multitouch 7 inch screen assembled in a plexiglas enclosure
Wandboard with a hardisk used as a in car media streaming server
Wandboards (6) packed with HDD's for bigdata cluster applications
Wandboard with a USB LCM display
Wandboard module carrier connector board for slimdevices streaming servers
Now there is a place to show off your project and/or find team-members to bring your project idea to reality.
http://forums.wandboard.org and go to the "Showcase and success stories" subforum
September 5 2013 - Wandboard Unplugged
Did you know that you can use Wandboard unplugged from it's connector board by connecting a 5V poweradaptor to the 2 thru-hole pins next to the camera connector?
This will make it possible to use the Wandboard EDM Module unplugged as a wireless camera, a bluetooth to WiFi gateway or any other application where you simply just need a wireless interface and a few signals that are available on the camera connector.
The connector that you need for this is a simple MOLEX power connector.
MOLEX : http://www.molex.com/molex/products/datasheet.jsp?part=active/0436500200_PCB_HEADERS.xml
Buy the part online at Mouser/Digi-key
Mouser : http://www.mouser.com/Search/ProductDetail.aspx?qs=HlEFOAM0q6XGaAJJj3Pssw%3d%3d&;utm_source=eciaauthorized&utm_medium=aggregator&utm_campaign=538-43650-0200&utm_term=WM1860-ND&utm_content=Molex
DIGI-KEY : http://search.digikey.com/scripts/dksearch/dksus.dll?pname&;WT.z_cid=ref_neda_dkc_buynow&site=us&lang=en&name=WM1860-ND