Interesting links from a bit of Pi surfing over the weekend
Thanks to Alan R, for the pointer to the 1970’s film Colossus: The Forbin Project, about a super computer that becomes sentient, ultimately taking over the world
Right now all I need is another identical one and to connect them both……
Time build the physical computer, which will become a 4+1 Node super computer. To get the cases to stack, I’ve wrapped them into pairs with a bit of electrical tape. Here is Raspberry1 and Raspberry2 stacked
And again giving me 2 pairs of 2 Pi’s, this time Raspberry3 and Raspberry4
Take 1 10/100M Switch….
Add 2, 2 node Pi stacks….
Next we add a new comer to this project, RaspberryPrime, this is the 5th node in the stack and will be the coordinator of the 4 worker nodes
All the Pi’s are now wired to the switch…
And Raspberry Prime is located on top of the stack ready to control Raspberry’s 1, 2, 3 and 4
Cool eh ?
A nice article here by Scott Hanselman about the myths and truths about Raspberry Pi and its capabilities.
No it can’t everything, but it can still do a hell of a lot
The Hitchhickers Guide web site has a great section on the Pi. Great descriptions on software and hardware plus projects
The best place to get information on the Pi outside of the main website at raspberrypi.org is to head over to RPi Hub. A great Wiki that is actively maintained my enthusiasts and a great place to find out who is doing what with their Pis
Just got my copy of the authorised Raspberry Pi Book, and content looks great for anyone looking for a starter guide.
You can get it on Amazon
I’ve hooked up the blog to post updates automatically to my Facebook page, and my Twitter account
This post is unashamedly Mac biased, I use them day in day out, they are my work machine and until the Pi came along my play machine. I have some Linux and some windows some where, but they rarely get booted, so this post is about how to create a Debian image on an SD card that can be used to boot a Raspberry Pi
Step 1. Download the latest image from http://www.raspberrypi.org/downloads
Step 2. Insert the SD card. It will appear on you desktop looking something like the following image. Make a note of the name of the card, in this instance below it is called ‘Untitled’
Step 3. Open a terminal. Everything we now dow will be from the command line
Step 4. Identify the SD Card.
Enter the following command into at the terminal and press return, df list all available devices
You’ll get something like that. Now look for the name of the card we recorded from Step 1. Here we can see something called /Volumes/Untitled. If you now look at the beginning of the line, you’ll see the name OSX has given the device, it will start with /dev and have something of the format /disk2s1 like below. Make a note of the first number, in this instance ‘2’
Step 5. Unmount the device. Before we can burn the image we need to unmount the SD card from the file system, issue the command
$ sudo diskutil unmount /dev/disk2s1
Remember to change the first number to the one we recorded from the step above.
If it all works, you’ll get a message saying the device has been unmounted as can be seen below
Step 6. Burn the image. Now we can burn the image that we downloaded from RaspberryPi.org/downloads. The command we use is dd and it takes the format
$ sudo dd bs=1m if=<path to image to burn> of=<path to device to burn to>
The path to the image to burn, is the path to file we downloaded in step 2
The path to the device to burn the image to, is of the format /dev/rdiskN, where N is the number we recorded from the previous step, in our instance 2
When you press enter, nothing should happen. OSX goes off and starts burning the image, but provides no feedback, eventually after 5-10 mins it will finish and return to the command prompt
Step 7. Eject the device. Now that the image is burnt, we can eject the device and then extract the SD card from the SD slot and place it in one of our Raspberry Pi’s
Thats it, if all goes well you’ll have an SD card that contains an image of the latest Debian release
The next post will show the boot process and initial configuration of the Pi
University of Cambridge have posted a suite of tutorials on how to create a basic operating system using the Raspberry Pi as a base platform.
Tutorials, also include Arm v6 assembly language programming
Full details are available at Baking Pi